@@RESURRECTEDDIESEL so what if my temp gauge never leaves 110 on a 2006 chevy kodiack c5500 crew can 6.6 -theres no over heating at all ever and i have plenty of hot heat and ac,i just can’t figure it out why it never leaves 100 barely,110 is extreme working it????
You make good valid points , however the Manufacturers do just enough to get themselves out the warrenty period , with that said abs transmissions should never run as hot as or hotter than the engine temp , keep in mind friction is a transmissions worst enemy and some what contributes to friction is the fluid temp , the cooler you can keep it the better the trans will perform and the longer it last , I typically like to my trans temps at least 30 to 40 degrees cooler than engine temp . I have seen fluid come out looking like the day it was put in after a 60k service severe duty . Been in the business for well over 40 years and 20 with dealerships , manufacturers aren’t making money if they can’t get you back as a cash pay customer .
With that said trans fluid starts to burn at between 190 and 200 degrees anything above 220 and you looking at failure so why in gods name would I want to run my trans fluid temp remotely close to engine temp .
I have a 04 lly 2500hd crew cab long bed I think it's 167 inch wheel base so it's a larger truck than most and I have road armor front and rear bumpers and I haul all my tools that being said mine runs between 188 and 194 at 75 and pulling a dump trailer loaded going up hill never got over 204
If it doesn’t warm up after a few miles down the road I would definitely change the thermostats they could be stuck open for sure usually after about a minute of idling before I leave I get about 3-5 minutes down the road and I have heat blasting in the mornings
Thank you thank you so much brother that means the world to me brother! You are a great dude an absolutely a huge inspiration to me man thanks for the shoutout buddy appreciate it!
Great video. Chevy gauges do suck. Just replaced my cluster not long ago. If you ever do. Be careful not to crack or break the old cluster. They will not exchange it for core.
Good to know.. what would you do when your fan wants to run at 180 and all the way up to 210 and then stays on.. stop light to stop light but also be running when coming to a stop after being on the highway and swinging traffic lol.. where should I look?
Hey my brother recently got a lb7 duramax and he did an oil and filter change. Upon firing it up afterward it hit 120psi. After reaching operating temp it dropped but as hes driving it hits 90 psi at full throttle. Around 60 cruising. Its got a wix oil filter and mobil delvac 1300 super 15w40 full synthetic oil. Any suggestions on diagnosing the issue? Im not sure what his psi was before but it wasnt ever abnormally high.
I have an ‘01 and run fryer oil. It has a few extra gallons of coolant that runs through the tank to heat the oil so at first I had a problem getting it up to 180 so I put a grill cover and now it runs between 180 and 200. The last couple of times I’ve gone over the mountain pass (12,000ft) it way overheated. Can’t figure out why.
Thanks bro for the help. This goes a long way. Keep up the good work. I have a 2005 LLY dually after checking everything the shop said it was my wiring harness that was the problem.
Mark Ryl-Kuchar as long as your dash isn’t above 210 you’ll be fine especially if it’s hot out and you’re staying in the throttle a bit but if it never fluctuates I would look into new thermostats
Mine is heating up to 255 pulling up big hills with my horse trailer. As soon as I get to the top it’ll go back down to normal 210. Thermostat or fan clutch ?.
What’s up. Good video with good amount of info. I just recently bought a 2004’lly with 250,000 miles Coolant comes out the reservoir when filled back up on mine. Truck doesn’t over heat and doesn’t have any mixing inside the oil. My heater works but it takes a while for it to get hot. Would you think it’s bad thermostats or blown heads?? Thanks man hope you can help or anyone on these comments section!
the cheap and easy fix would be to change the cap on the reservoir and see if it continues to happen and if it does they make combustion gas tester but because you constantly are adding new fluid it never really gets dirty to tell but if you drive the truck for the day and park it for the night, the next morning go out and open the hood before starting it and check if the upper radiator hose is still hard
Pakawat Pimsaguan yes so do I the stop and go makes the heat rise a little bit I’m sure on the highway you see about 170-180 depending and that’s just fine
Ima look into those mishimoto thermostats I'm always towing heavy and always in the hills never bothered with high temps but I'm sure it will help even more 👍👍
Is that at idle for the oil pressure cause if so that’s fine but for the coolant that seems a little low is that reading off the dash or do you have an edge monitor
DURAMAX_DIESEL that’s off the dash and the edge programmer. But when I pull a trailer with a couple lawn mowers on it, my coolant temp goes up to about 200 - 215
Hmmmm that’s different that’s really cool usually 180 is right about the lower side of things I’m not sure it’s a bad thing but the 210 about towing wouldn’t be concerning to me
One little trick is to turn your heater on I do this when I run into the mountains when I'm hauling any type of load but it is a temporary fix and it kind of sucks I am trying to figure out alternative ways to super-cool the truck 4 coolant air conditioning system for the engine I don't care I'm going to figure this out one way or another
Transmission on my 07 LBZ maintains a steady 150* and my thermostat at 75mph stays at the line before 210*, in town trans is the same and thermostat drops another line mark.
I called Allison trans, 100degrees above ambient is correct, therefore 200+ can be expected when towing heavy loads in 100+, BUT, if the trans never gets above 180 the life of the trans will be longer, I installed a forced air trans oil cooling system, up hill in 115 degrees at 4000 ft towing 17000 lbs, trans temp never got above 180 degrees, just saying.
@@volveras09 Derale duramax transmission cooling kit around $200, I went over board and had hydraulic lines made with the correct fittings to match the new kit and existing trans line, then added on/off switch for the fan motor, good luck.
Funny you post this video.. This past weekend I was driving up back to work(5hrs) and got a little raging on a Mercedes.. Well after about 4-5miles of flogging beyond what I should have, I finally noticed my dic going off at me saying low coolant&engine over heat.. fml. Pulled over and realized I had left the resavior cap too loose and so shut the truck off and added almost 5gal of water. Dear God I was pissed at myself. Had 30miles left to go, drove the rest of the way fine, haven't had opportunity to drive anymore but Jesus have I been concerned about it.
Jake Ashcraft that definitely is not good but it happens what year truck? Hopefully there’s no issues I would put some coolant in it out the cap on all the way and take it for a drive and see what happens if something weird happens feel free to hit me up!
Yeah man, I've definitely been trying to turn down all the dogging my truck so much. It's 07 so got the better gaskets but still worried me about the heat to heads. I picked up some dexcool and since driven it about 1k miles and it hasn't used any of the water so I'm thankfully gonna have to drain the water to add the coolant back. Thanks again for being welcoming to help my girlfriend when she drove it to Anaheim last year and got a random thermostat code! We'll have to have some beers whenever I make it out that way myself, if you're still there hah
Yes of course man always glad to lend a helping hand and maybe when I road trip home if I don’t see ya before then I’ll stop by! But glad the truck is working itself out hopefully no more issues for you!!
Hahaha that’s definitely not a bad thing at all! Usually 100-120 degrees above ambient while towing is normal just depends how heavy and how hot it is out!
At approx 150k miles the injectors will need to be replaced, if you tow heavy, but, as a daily driver, not hauling, it will run great as long as you don’t tow heavy.
Great video for us new owners especially for the LLY. I’ve been paranoid about head gaskets since I got the truck. I’m in the middle of a water pump job right now because my old one was leaking from the weep hole and the flange for the oil cooler pipe. Never have coolant gushing and my upper hose was only firm once after towing my jetskis through the hills in 96 degree weather...hoping I’m ok
Got it finished up today, took my sweet time lol! So far no leaks and not blowing coolant or losing it. I think I have developed a sound similar to marbles rattling in a can which some people claim might be air in the system so I'll bleed it again tomorrow and see what happens
It's not air in the system. Some more research has led me to believe it's the gear on the pump itself not meshing correctly with the cam gear that drives it. Have you ever seen this or heard it? It's difficult to pin down because it's resonating throughout the engine.
I have not heard of that usually as long as the bolts are tight and it’s sealed to the block it’s on the gear. It’s a pretty tight tolerenece unless you got a junky pump. If you have Instagram add me and send me a video of it
What should you oil pressure run going down the road with converter locked up mine runs ab 40psi is that low or just me and I have 15:40 rotella and it has about 4K miles on oil
thats fine duramax are hvlp (high volume low pressure) pumps that dont require a crazy amount of pressure! maybe time for a change but as the rpms go up you should see a rise up and thats good!
My 04 LLY trans only ever sees 200-220 when towing with a large load for an extended period of time regular driving temp is 140 and then in the winter the trans temp guage dosent even get up high enough to move the guage.
My L B Z. 298000 miles. 30 psi hot no madder what brand of oil. Never been above 195 towing with 12,000 pounds behind in 90 degree weather from Wisconsin to Alabama. Heat kills A T F fluid. Simple ! Take your average temp. Look at a chart. It will tell you safe time it should be run.
That’s awesome but I agree the heat is what kills it for sure but yeah it’s usually about 80-100 degrees above ambient temperature from what I’ve seen and learned!
Sorry bud but I gotta call bullshit on the 195 max temp, in 90 deg. ambiente temp. pulling 12k. Either you’re always pulling downhill, you’ve added a BUNCH of trans cooling capacity, or you’re FULL OF SHIT!
I go to Walmart today and I asked them for 285 65 r16 and they tell me oh that will ruin your transmission and we don't want to get sued so we can't install that for you I said I've got the wheels I'll pull them off you just Mount them and that's what I'm talking about
Hey I have a lb7 and it’s time for injectors I’m thinking about doing Head gaskets at the same time and studs my question is can I put head studs in with the motor in the truck I know that last head bolt closest to the fire wall is tight thanks bro
i have done head gaskets and studs while in the cab before! you can do it but it is really tight on the driver side. what i ended up having to do was set the head on the block without the studs installed then thread them down like bolts and then do the rest and i believe it was only the driver side! but can be done just have to get a little creative!
Take the transmission mount bolts to the cross memeber out and jack up the trans as to rotate the engine and the bolt or stud will clear the firewall fine.
Great information man! I have an Edge Insight and my lbz coolant temp has never been above 200 must be the mishimoto thermostats 196 is the hottest I’ve ever seen it. Keep the content coming your videos have helped a ton working on the truck.
5280 Jeff he’ll yeah another guy said the same thing with his edge I think the clusters are off but all the more reason 210 on the dash is fine but thank you glad I’m able to help!
I have a 2006 LLY towing 3 car trailer all the time through PA mountains and i reach 235 on hot days going up the hill. At 235 fan kicks in and goes down to 210 and starts again when going up the hill again. First it made me nervous but read truck manual and it said that its a normal temperature while heavy towing.
Yeah seems not too extremely hot especially if you had the ac on too I wouldn’t be surprised I’ve seen that with my truck unloaded driving up a super steep mountain with the ac on
It was an lbz motor with lly tuning in early 06 they called it an lly. It had the lbz motor 6 speed trans they just didn’t change the ecu yet and bam 06 lly!!
No I don’t really know the ins and outs but my guess is they knew the lly tunes worked they just changed up the motor a little bit have the same fuel injection system or similar enough that the lly tunes would work so that’s less work that gm has to do to get the next truck into production and once they started production they probably fine tuned it and officially made the lbz
Well the lb7 and lly short blocks are the same but you should I believe be around 22 pounds at idle I think is recommended when was the last time you have done an oil change
@@RESURRECTEDDIESEL Yes but Heads, injectors, turbo, egr system are all different... its one model newer many things were improved and changed.. hell even our pistons are different. Oil is 1000 miles old no leaks hope that helps. The answer is likely sell and get an LLY
Look into Triax oil 👍🏻👍🏻👍🏻 good stuff. Got the name from my fleet dept at work can go up to 70,000 between drains they did have the oil looked at and at 70,000 it was still in the green.
i dont believe that lly have the valley sensor like the lbz do but if anything it would be measured right off the maf sensor in the intake on the older models but i never check mine
DURAMAX_DIESEL Thankyou for the quick response, I was wondering because on my LBZ when I give it gas the IAT at the manifold skyrockets to 180 degrees and it seems a bit high
Yeah I’m not too familiar with intake temps the lower the better obviously but the sensor is in the valley so I’m sure it gets warm! Do you have a cold air intake or anything
what I mean by that is the larger the tires that you run and I'm talking about height-wise the better fuel economy you have this is just a little given secret that nobody freaking talks about and it really pisses me off
I have a 09 2500 HD Duramax that will not come up to temperature add an idle you have to drive down the highway about four or five miles before it pops up to running temp right around 210 on the gauge and then when you come to a stop and put the truck in park the temperature drops I replaced the thermostats last week thinking I had bad thermostats but it's still doing it what is the problem
My truck does the same thing as long as you aren’t getting the check engine light for the under temp code your fine duramaxs do a great job of cooling at idle if I ever repair one and need to bring it up to temp it takes usually about 20-30 minutes of idling and holding it up in rpms to get it up to temp just sitting and that’s in Southern California where it’s always 60-80 degrees out so if you’re in a cold climate it’s normal let it idle to get the cylinders warm then take off and you should be fine
My 03 went just above 210 and I was towing my trailer in 100degree and I was thinking something might be wrong but thanks for the video, I’m pretty sure it was just weather and the load I had on the truck.
true not ever really much of an issue unless your thermostats are stuck open its not too often you here of a duramax under temp that isn't very easily fixed
DURAMAX_DIESEL yeah, that was my issue. It threw two codes, low coolant temp and MAF Sensor circuit codes. Replaced the thermostats and cleared the codes and neither came back.
Vortex Meltz are you going off the gauges or an edge monitor cause the reading in the guages are a little higher but if not that’s good it’s hot here in SoCal haha
well today is your lucky day you get to learn!! the Duramaxs do in fact have two thermostats a 175 and 185 degree thermostat i believe are the opening temps
ECT LMM 12* =210* My truck has 180/185**Tstats All my other trucks indicated what the thermostats installed. This truck runs at 210* I think GM put the wrong gauge/sensors in the truck. I don't understand.....
I agree all trucks have 180/185 t stats but the gauges always go up to 210 everyone that I have had always had has gotten up there unless you’re say it’s 12 degrees out one of your t stats could also be stuck close if it’s getting that warm
I think it was just the design gm has because even with the edge or something reading the actual 180/185 or a little hire the Guage is meant to have some leeway so that was you have time to save your motor before total destruction if you were to have an issue I think. Gm engineers aren’t all that stupid I’m sure there is a reason for it but I wouldn’t know!
I really don't know what the hell Chevy is doing but it's kind of goes into the protocols of the Learned Elders of Zion and the sinking of the Titanic and the assassination attempts against Henry Ford when he decided to run for president when he figured out what was going on my whole point being is that Chevy should be making quality gauges that work for the life of the truck and I'm not really seeing that right now my tachometer bounces up and down for my transmission temperatures all the time my emergency light switch always seems to have a short in it and this constant overheating problem on top of the problem that this truck can really only handle about 7,000 lb up a mountain at 40 miles per hour that's pretty pathetic for a 3500 in my opinion I'm about ready to drop this truck all together and go for another class 8 trucks and do all my mods on that truck and just say fuck the Chevy is he can't make a good quality truck get out of the fucking business move over so someone else can
I'm about to start my own RUclips channel well I've already had it for a very long time but I'm about to blow it up and what I mean by that is freaking bulldog your truck that's number one number two Run your truck on hydrogen number three super cool your truck number for never go with OEM spec tires that is a fraud in itself
Excellent review man👍🏾👍🏾but as for oil changes I go 30K miles or once per year which ever comes first with rotella triple t 15w40. I decided to send a sample of my 30k oil change to Blackstone labs and my results were good and the viscosity was the same but the lab report comments said I could have went another 4k miles. My truck has over 270k miles on it and going strong 👍🏾👍🏾as for the water temp GM temp gauge is not accurate, I have an edge CTS monitor hook up to the OBD port and that 160 * mark on the gm gauge is really 140* on my monitor and 210 is really 185
I completely agreee with you I know a lot more know then I did back then but it just shows that its in an okay operating range but 30k on an oil change is insane im glad its working for you though
That’s also cause it doesn’t have any horsepower to heat the trans up 😂😂 I’m just messing though that’s really good and efficient though are you running a fan on it or just a larger cooler?
A built trans will run hotter because the line pressure is increased. More heat from the pump.
Ransom Smith makes sense thank you for that information!
@@RESURRECTEDDIESEL so what if my temp gauge never leaves 110 on a 2006 chevy kodiack c5500 crew can 6.6 -theres no over heating at all ever and i have plenty of hot heat and ac,i just can’t figure it out why it never leaves 100 barely,110 is extreme working it????
You make good valid points , however the
Manufacturers do just enough to get themselves out the warrenty period , with that said abs transmissions should never run as hot as or hotter than the engine temp , keep in mind friction is a transmissions worst enemy and some what contributes to friction is the fluid temp , the cooler you can keep it the better the trans will perform and the longer it last , I typically like to my trans temps at least 30 to 40 degrees cooler than engine temp . I have seen fluid come out looking like the day it was put in after a 60k service severe duty . Been in the business for well over 40 years and 20 with dealerships , manufacturers aren’t making money if they can’t get you back as a cash pay customer .
With that said trans fluid starts to burn at between 190 and 200 degrees anything above 220 and you looking at failure so why in gods name would I want to run my trans fluid temp remotely close to engine temp .
Great Video, Thank You Sir. My Dmax Oil PSI Scares me sometimes so hearing your explanation helps ALOT! Thanks again and Please keep these coming.
Phil G. Glad I was able to help thank you for the support I will be making more if you have suggestions please feel free to drop it in a comment
The 2005 Duramax specs in my haynes manual call for 14psi at idle and 40psi of oil pressure at 2000rpm
Tnx man I was worry about my duramax 3500 this video clear my mind
My dad Lbz work truck has 320k never changed fluid or filter. Lol
You hit the nail on the head good job man !
thanks brother!!
My lly while pulling a 32 foot gooseneck runs 200 or little above is that ok
My truck idling in the cold my heater don’t work .. soon as I start making boost it warms up
Just had a new radiator put in and a lil water leaking from reserve is that normal
Also my truck unless I’m towing or going up hill on hot day never hits 210
My lb7 is always about 150 normal driving … as soon as I put it in 4x4 it immediately goes up to 210… kinda weird
I have a 04 lly 2500hd crew cab long bed I think it's 167 inch wheel base so it's a larger truck than most and I have road armor front and rear bumpers and I haul all my tools that being said mine runs between 188 and 194 at 75 and pulling a dump trailer loaded going up hill never got over 204
Muchas gracias
2009 2500
Gauge always sits at 180-190
However, OBD gives a P0128 code ( coolant thermostat ) change based on code reading ?
Thanks for this video very helpful my truck will barely warmup and blow heat I’m thinking my thermostats are bad but we’ll see
If it doesn’t warm up after a few miles down the road I would definitely change the thermostats they could be stuck open for sure usually after about a minute of idling before I leave I get about 3-5 minutes down the road and I have heat blasting in the mornings
Ok thanks man imma replace them
If you live in real cold weather try a grille cover too. Duramax never heat up in the winter.
oil pressure is set to come on at 9
Thank you thank you so much brother that means the world to me brother! You are a great dude an absolutely a huge inspiration to me man thanks for the shoutout buddy appreciate it!
patrick crawford of course man thank you! The world needs more people like you. The kinda guy that would give his shirt off his back to anyone
Great video and thanks
Anything under 27psi of oil pressure is bad it stops spraying oil on the pistons
Ty Schwartz trucks run 24psi factory
Great video. Chevy gauges do suck. Just replaced my cluster not long ago. If you ever do. Be careful not to crack or break the old cluster. They will not exchange it for core.
thank you that is very good information to know because im really good at breaking things hahaha!!!
Good to know.. what would you do when your fan wants to run at 180 and all the way up to 210 and then stays on.. stop light to stop light but also be running when coming to a stop after being on the highway and swinging traffic lol.. where should I look?
Hey my brother recently got a lb7 duramax and he did an oil and filter change. Upon firing it up afterward it hit 120psi. After reaching operating temp it dropped but as hes driving it hits 90 psi at full throttle. Around 60 cruising. Its got a wix oil filter and mobil delvac 1300 super 15w40 full synthetic oil. Any suggestions on diagnosing the issue? Im not sure what his psi was before but it wasnt ever abnormally high.
So theirs 2 different Duramax diesel engines? How can you tell the difference between the 2
I have an ‘01 and run fryer oil. It has a few extra gallons of coolant that runs through the tank to heat the oil so at first I had a problem getting it up to 180 so I put a grill cover and now it runs between 180 and 200. The last couple of times I’ve gone over the mountain pass (12,000ft) it way overheated. Can’t figure out why.
What conversions did you have to do to run fryer oil?
Thanks bro for the help. This goes a long way. Keep up the good work. I have a 2005 LLY dually after checking everything the shop said it was my wiring harness that was the problem.
Seth mSpencer glad I could help in any way drive to do my best explaining things for everyone!!
My truck overheats when towing 😢
I got a lead foot never see 210 stays around the 1/4 line
I get nervous with coolant temperature when the fans roaring and the coolant temperature isn’t dropping
Mark Ryl-Kuchar as long as your dash isn’t above 210 you’ll be fine especially if it’s hot out and you’re staying in the throttle a bit but if it never fluctuates I would look into new thermostats
Mine is heating up to 255 pulling up big hills with my horse trailer. As soon as I get to the top it’ll go back down to normal 210. Thermostat or fan clutch ?.
What’s up. Good video with good amount of info. I just recently bought a 2004’lly with 250,000 miles
Coolant comes out the reservoir when filled back up on mine. Truck doesn’t over heat and doesn’t have any mixing inside the oil. My heater works but it takes a while for it to get hot. Would you think it’s bad thermostats or blown heads?? Thanks man hope you can help or anyone on these comments section!
the cheap and easy fix would be to change the cap on the reservoir and see if it continues to happen and if it does they make combustion gas tester but because you constantly are adding new fluid it never really gets dirty to tell but if you drive the truck for the day and park it for the night, the next morning go out and open the hood before starting it and check if the upper radiator hose is still hard
P0128 code on my edge 2 the other day. Your timing couldn't be better. Low temp on the readout, took forever to warm up.
These trucks usually take a good bit idling to warm up we’re you driving it
@@RESURRECTEDDIESEL Yes, I usually slow roll for it to get to temp then drive normal. I ordered the Mishimoto from Amazon.
Yeah I would definitely start with the thermostats!! Hopefully that takes care of it
So what temperature does the torque converter go by, as in it locking up?
About 145 to 155
Nice video I always wonder about then TFT I get up to 200 unloaded around town driving.
Pakawat Pimsaguan yes so do I the stop and go makes the heat rise a little bit I’m sure on the highway you see about 170-180 depending and that’s just fine
My lml trans runs peak of 160deg when pulling a 30ft gn loaded in the mountains of tn is that fine to be that low
my lml not towing is always around 100deg over ambient temp when fully warm , it takes a bit to fully get warm when it’s not that hot
Ima look into those mishimoto thermostats I'm always towing heavy and always in the hills never bothered with high temps but I'm sure it will help even more 👍👍
LBZTOMMY hell yeah if you get them in please lemme know how they are and I’ll probably get myself some someday haha
DURAMAX_DIESEL lol will do bud
@@RESURRECTEDDIESEL Highly recommend
And on my 03 lb7, at operating coolant temp (150), My oil pressure is about 22 - 27 psi
Is that at idle for the oil pressure cause if so that’s fine but for the coolant that seems a little low is that reading off the dash or do you have an edge monitor
DURAMAX_DIESEL that’s off the dash and the edge programmer. But when I pull a trailer with a couple lawn mowers on it, my coolant temp goes up to about 200 - 215
Hmmmm that’s different that’s really cool usually 180 is right about the lower side of things I’m not sure it’s a bad thing but the 210 about towing wouldn’t be concerning to me
One little trick is to turn your heater on I do this when I run into the mountains when I'm hauling any type of load but it is a temporary fix and it kind of sucks I am trying to figure out alternative ways to super-cool the truck 4 coolant air conditioning system for the engine I don't care I'm going to figure this out one way or another
Yeah totally understand that have had to do that trick before and that would be kinda sick a coolant to air cooler but using a/c as the air over it
Electric fan and mishimoto trans cooler setup solved it all for my lmm👌
Chevy calls for 2:15 so what's the fuel economy difference on a 285
Transmission on my 07 LBZ maintains a steady 150* and my thermostat at 75mph stays at the line before 210*, in town trans is the same and thermostat drops another line mark.
Sounds about right man that’s what my truck does
Allison says 100deg above ambient is normal.
I called Allison trans, 100degrees above ambient is correct, therefore 200+ can be expected when towing heavy loads in 100+, BUT, if the trans never gets above 180 the life of the trans will be longer, I installed a forced air trans oil cooling system, up hill in 115 degrees at 4000 ft towing 17000 lbs, trans temp never got above 180 degrees, just saying.
Do you have a link or info on the trans oil cooling system you used?
@@volveras09 Derale duramax transmission cooling kit around $200, I went over board and had hydraulic lines made with the correct fittings to match the new kit and existing trans line, then added on/off switch for the fan motor, good luck.
@@davidmiles2597 thanks! Will check it out
I got an 03 lb7 and my average operating coolant temp is about 150. Would my low temp thermostat be stuck open or is that normal?
My 04 runs at about 180 once warmed up in the winter, and 200-210 in the summer. 150 sounds low.
I agree with jellyfrosh 150 is low could potentially be stuck open
Just happened to me. 150 is low, changing both thermostats.
Hopefully that fixes it up good i wouldndonthe same thing
Funny you post this video.. This past weekend I was driving up back to work(5hrs) and got a little raging on a Mercedes.. Well after about 4-5miles of flogging beyond what I should have, I finally noticed my dic going off at me saying low coolant&engine over heat.. fml. Pulled over and realized I had left the resavior cap too loose and so shut the truck off and added almost 5gal of water. Dear God I was pissed at myself. Had 30miles left to go, drove the rest of the way fine, haven't had opportunity to drive anymore but Jesus have I been concerned about it.
Jake Ashcraft that definitely is not good but it happens what year truck? Hopefully there’s no issues I would put some coolant in it out the cap on all the way and take it for a drive and see what happens if something weird happens feel free to hit me up!
Yeah man, I've definitely been trying to turn down all the dogging my truck so much. It's 07 so got the better gaskets but still worried me about the heat to heads. I picked up some dexcool and since driven it about 1k miles and it hasn't used any of the water so I'm thankfully gonna have to drain the water to add the coolant back. Thanks again for being welcoming to help my girlfriend when she drove it to Anaheim last year and got a random thermostat code! We'll have to have some beers whenever I make it out that way myself, if you're still there hah
Yes of course man always glad to lend a helping hand and maybe when I road trip home if I don’t see ya before then I’ll stop by! But glad the truck is working itself out hopefully no more issues for you!!
DURAMAX_DIESEL Cool, beers on me when we link up! Where's home for you by the way, Rhode Island?
Sounds good boss and yessir! Rhode Island sure is
My lmm transmission always sits at like 130-140 even in summer lol. I don’t tow heavy so I’ve never seen how high it’ll actually go
Hahaha that’s definitely not a bad thing at all! Usually 100-120 degrees above ambient while towing is normal just depends how heavy and how hot it is out!
At approx 150k miles the injectors will need to be replaced, if you tow heavy, but, as a daily driver, not hauling, it will run great as long as you don’t tow heavy.
Great video for us new owners especially for the LLY. I’ve been paranoid about head gaskets since I got the truck. I’m in the middle of a water pump job right now because my old one was leaking from the weep hole and the flange for the oil cooler pipe. Never have coolant gushing and my upper hose was only firm once after towing my jetskis through the hills in 96 degree weather...hoping I’m ok
Sounds okay right now! Hope the job goes well if you need anything feel free to ask! It’s not too bad once you get the balance off!
Got it finished up today, took my sweet time lol! So far no leaks and not blowing coolant or losing it. I think I have developed a sound similar to marbles rattling in a can which some people claim might be air in the system so I'll bleed it again tomorrow and see what happens
Hmmmm never heard that exspression for a noise before but good work let me know what comes f it!
It's not air in the system. Some more research has led me to believe it's the gear on the pump itself not meshing correctly with the cam gear that drives it. Have you ever seen this or heard it? It's difficult to pin down because it's resonating throughout the engine.
I have not heard of that usually as long as the bolts are tight and it’s sealed to the block it’s on the gear. It’s a pretty tight tolerenece unless you got a junky pump. If you have Instagram add me and send me a video of it
Do you run transynd only for transmission? How about tryiax?
Never got around to trying the other stuff. Always used transynd because it’s more readily available
What should you oil pressure run going down the road with converter locked up mine runs ab 40psi is that low or just me and I have 15:40 rotella and it has about 4K miles on oil
thats fine duramax are hvlp (high volume low pressure) pumps that dont require a crazy amount of pressure! maybe time for a change but as the rpms go up you should see a rise up and thats good!
My 04 LLY trans only ever sees 200-220 when towing with a large load for an extended period of time regular driving temp is 140 and then in the winter the trans temp guage dosent even get up high enough to move the guage.
Damn that’s good it’s hot here in Southern California so around 180 is the norm!!
@@RESURRECTEDDIESEL Add a big cooler, there's charts with trans temp and life of fluid. Gives a good understanding
My L B Z. 298000 miles. 30 psi hot no madder what brand of oil. Never been above 195 towing with 12,000 pounds behind in 90 degree weather from Wisconsin to Alabama. Heat kills A T F fluid. Simple ! Take your average temp. Look at a chart. It will tell you safe time it should be run.
That’s awesome but I agree the heat is what kills it for sure but yeah it’s usually about 80-100 degrees above ambient temperature from what I’ve seen and learned!
Sorry bud but I gotta call bullshit on the 195 max temp, in 90 deg. ambiente temp. pulling 12k. Either you’re always pulling downhill, you’ve added a BUNCH of trans cooling capacity, or you’re FULL OF SHIT!
I go to Walmart today and I asked them for 285 65 r16 and they tell me oh that will ruin your transmission and we don't want to get sued so we can't install that for you I said I've got the wheels I'll pull them off you just Mount them and that's what I'm talking about
Edge Monitor indicates 185*F
For the price you pay for these trucks accuracy sucks!
Hey I have a lb7 and it’s time for injectors I’m thinking about doing Head gaskets at the same time and studs my question is can I put head studs in with the motor in the truck I know that last head bolt closest to the fire wall is tight thanks bro
i have done head gaskets and studs while in the cab before! you can do it but it is really tight on the driver side. what i ended up having to do was set the head on the block without the studs installed then thread them down like bolts and then do the rest and i believe it was only the driver side! but can be done just have to get a little creative!
Take the transmission mount bolts to the cross memeber out and jack up the trans as to rotate the engine and the bolt or stud will clear the firewall fine.
Matthew W that is a damn good idea!!! Thank you for commenting that!
Matthew W that’s something I’ll will do thank you
My opinion is faster to do that with the motor out it's easy to come out and put back together
Great information man! I have an Edge Insight and my lbz coolant temp has never been above 200 must be the mishimoto thermostats 196 is the hottest I’ve ever seen it. Keep the content coming your videos have helped a ton working on the truck.
5280 Jeff he’ll yeah another guy said the same thing with his edge I think the clusters are off but all the more reason 210 on the dash is fine but thank you glad I’m able to help!
Same here I’m never over 185 190 literally even on 100 degree days
That’s good at least it’s staying cool I’ve only seen high temps going up a steep grade with the ac on in Cali but now it stays around 185 always
I have a 2006 LLY towing 3 car trailer all the time through PA mountains and i reach 235 on hot days going up the hill. At 235 fan kicks in and goes down to 210 and starts again when going up the hill again. First it made me nervous but read truck manual and it said that its a normal temperature while heavy towing.
Yeah seems not too extremely hot especially if you had the ac on too I wouldn’t be surprised I’ve seen that with my truck unloaded driving up a super steep mountain with the ac on
I don't think they made LLY in 2006. Just letting you know
It was an lbz motor with lly tuning in early 06 they called it an lly. It had the lbz motor 6 speed trans they just didn’t change the ecu yet and bam 06 lly!!
@@RESURRECTEDDIESEL that's werid. Was the LLY ECU tune faster or more efficient on the lbz. You know with the bigger turbos the llys have?
No I don’t really know the ins and outs but my guess is they knew the lly tunes worked they just changed up the motor a little bit have the same fuel injection system or similar enough that the lly tunes would work so that’s less work that gm has to do to get the next truck into production and once they started production they probably fine tuned it and officially made the lbz
My LB7 sits at 14 psi fully warm... That bad?
Are you talking for oil pressure?
@@RESURRECTEDDIESEL LOL. Yes. But was hoping for someone with another LB7 to say what they're getting. Your and I's engines are different.
@@RESURRECTEDDIESEL Fixed
Well the lb7 and lly short blocks are the same but you should I believe be around 22 pounds at idle I think is recommended when was the last time you have done an oil change
@@RESURRECTEDDIESEL Yes but Heads, injectors, turbo, egr system are all different... its one model newer many things were improved and changed.. hell even our pistons are different. Oil is 1000 miles old no leaks hope that helps. The answer is likely sell and get an LLY
Most importantly change ALL your fluids and filters
definitely agree sometimes people dont stay on top of maintenance as they should
You keep stating that you are not an expert. I believe you.
🤷🏻♂️🤷🏻♂️
What if the engine light comes on telling you that the engine temp is to low
Do you have an 06 or newer duramax
Chris Tucker mine is doing this too. P0128 code. On my cts2 it shows around 160°. 2006 LBZ.
Mine is a 2013
Chris, from my research it appears it’s just a bad thermostat or two. I ordered new ones.
Thank you I will change them
Look into Triax oil 👍🏻👍🏻👍🏻 good stuff. Got the name from my fleet dept at work can go up to 70,000 between drains they did have the oil looked at and at 70,000 it was still in the green.
Really no kidding I’ll look into it! Thanks!!
Lol
I used triax transmission fluid in my Allison 1000 off Amazon. Seems to work okay. Claimed to be Allison approved.
Thanks for the feedback I’ll have to check it out
What about intake air temperatures? And do you measure from the manifold or the intake itself?
i dont believe that lly have the valley sensor like the lbz do but if anything it would be measured right off the maf sensor in the intake on the older models but i never check mine
DURAMAX_DIESEL Thankyou for the quick response, I was wondering because on my LBZ when I give it gas the IAT at the manifold skyrockets to 180 degrees and it seems a bit high
Yeah I’m not too familiar with intake temps the lower the better obviously but the sensor is in the valley so I’m sure it gets warm! Do you have a cold air intake or anything
DURAMAX_DIESEL I have the stock intake, I’m skeptical on getting one because certain ones are known to increase IATs because of a poor design
I’m pretty sure banks is the only really good rested one that works a lot of big power guys run them
Anyone have some solid links for lly rear bumpers under 400 dollars
Just go to your local pick and pull I’m pretty sure any classic style 01-07 theybare all gunna be the same wheathrr a duramax or not
what I mean by that is the larger the tires that you run and I'm talking about height-wise the better fuel economy you have this is just a little given secret that nobody freaking talks about and it really pisses me off
I have a 09 2500 HD Duramax that will not come up to temperature add an idle you have to drive down the highway about four or five miles before it pops up to running temp right around 210 on the gauge and then when you come to a stop and put the truck in park the temperature drops I replaced the thermostats last week thinking I had bad thermostats but it's still doing it what is the problem
My truck does the same thing as long as you aren’t getting the check engine light for the under temp code your fine duramaxs do a great job of cooling at idle if I ever repair one and need to bring it up to temp it takes usually about 20-30 minutes of idling and holding it up in rpms to get it up to temp just sitting and that’s in Southern California where it’s always 60-80 degrees out so if you’re in a cold climate it’s normal let it idle to get the cylinders warm then take off and you should be fine
My 03 went just above 210 and I was towing my trailer in 100degree and I was thinking something might be wrong but thanks for the video, I’m pretty sure it was just weather and the load I had on the truck.
yessir towing that hot you will she pretty high temps just have to try to keep them down the best you can
You didn’t cover anything about under temperatures.
true not ever really much of an issue unless your thermostats are stuck open its not too often you here of a duramax under temp that isn't very easily fixed
DURAMAX_DIESEL yeah, that was my issue. It threw two codes, low coolant temp and MAF Sensor circuit codes. Replaced the thermostats and cleared the codes and neither came back.
15lbs of oil pressure is fine… at idle.. off idle 15 pounds is bad
My truck has never seen 200 degrees even with the programmer turned up
Vortex Meltz are you going off the gauges or an edge monitor cause the reading in the guages are a little higher but if not that’s good it’s hot here in SoCal haha
So no definitive answers
My trans never ran hotter than 150 never towed
It could be 0 outside and my truck on the highway will run a 210 all day
210 is normal for ur motor and I don’t think ur motor has 2 thermostats I’ve never ever heard of it having 2 no motor in the world has 2 thermostats
But then again I might learn something new
well today is your lucky day you get to learn!! the Duramaxs do in fact have two thermostats a 175 and 185 degree thermostat i believe are the opening temps
I think its 180 low temp and 210 high temp
ECT LMM
12* =210*
My truck has 180/185**Tstats
All my other trucks indicated what the thermostats installed. This truck runs at 210*
I think GM put the wrong gauge/sensors in the truck.
I don't understand.....
I agree all trucks have 180/185 t stats but the gauges always go up to 210 everyone that I have had always had has gotten up there unless you’re say it’s 12 degrees out one of your t stats could also be stuck close if it’s getting that warm
12 oClock
I think it was just the design gm has because even with the edge or something reading the actual 180/185 or a little hire the Guage is meant to have some leeway so that was you have time to save your motor before total destruction if you were to have an issue I think. Gm engineers aren’t all that stupid I’m sure there is a reason for it but I wouldn’t know!
I really don't know what the hell Chevy is doing but it's kind of goes into the protocols of the Learned Elders of Zion and the sinking of the Titanic and the assassination attempts against Henry Ford when he decided to run for president when he figured out what was going on my whole point being is that Chevy should be making quality gauges that work for the life of the truck and I'm not really seeing that right now my tachometer bounces up and down for my transmission temperatures all the time my emergency light switch always seems to have a short in it and this constant overheating problem on top of the problem that this truck can really only handle about 7,000 lb up a mountain at 40 miles per hour that's pretty pathetic for a 3500 in my opinion I'm about ready to drop this truck all together and go for another class 8 trucks and do all my mods on that truck and just say fuck the Chevy is he can't make a good quality truck get out of the fucking business move over so someone else can
What year is the truck you have they have definitely changed quite a bit over the years and I think improved very much so!
I'm about to start my own RUclips channel well I've already had it for a very long time but I'm about to blow it up and what I mean by that is freaking bulldog your truck that's number one number two Run your truck on hydrogen number three super cool your truck number for never go with OEM spec tires that is a fraud in itself
Excellent review man👍🏾👍🏾but as for oil changes I go 30K miles or once per year which ever comes first with rotella triple t 15w40. I decided to send a sample of my 30k oil change to Blackstone labs and my results were good and the viscosity was the same but the lab report comments said I could have went another 4k miles. My truck has over 270k miles on it and going strong 👍🏾👍🏾as for the water temp GM temp gauge is not accurate, I have an edge CTS monitor hook up to the OBD port and that 160 * mark on the gm gauge is really 140* on my monitor and 210 is really 185
I completely agreee with you I know a lot more know then I did back then but it just shows that its in an okay operating range but 30k on an oil change is insane im glad its working for you though
My 7.3 runs about 165-170 with the Mishi Moto transmission cooler towing 12,500 pounds up hills oh wait wrong video sorry Duramax guys .
That’s also cause it doesn’t have any horsepower to heat the trans up 😂😂 I’m just messing though that’s really good and efficient though are you running a fan on it or just a larger cooler?
Just large cooler all my buddy’s have Duramax truck they are great trucks I just don’t tell them that 😂😂
Hahaha the 7.3s are great too man just two totally different animals ya know and all trucks have their problems I don’t care who ya are haha
DURAMAX_DIESEL Yes you are correct keep up the good work on your videos 👍🏻
Thanks boss take it easy 🤘🏼
Play paintball again
It kind of explains why Ford is outperforming everyone else but I got to say Ford still did it much better years ago when Henry was alive
Every truck at my diesel shop getting fixed is a Ford. It's a Ford graveyard. You hardly ever see a Dodge or GM in there.
Too long winded
Way to ignore science, genius. Factory gages are waaaaay off.
Next time your trans temp guage says 300 just ignore it it’s way off