Chevy 2500 6.6 DURAMAX Diesel (L5P) | MAP Sensor Issues **HEAVY MECHANIC Explains**
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- Опубликовано: 16 июл 2024
- the Chevy 2500 6.6L Duramax Diesel L5P number 1 issues/problem is the MAP sensor getting clogged and causing your Duramax diesel engine to run poorly and most importantly cause the Duramax to lose power. I explain as a heavy duty mechanic how to fix this issues easily and quickly as well as explain how this simple fix can gain you back lots horsepower to your Duramax Diesel.
FULL Duramax Review - • Chevy 2500 6.6 Duramax...
Map Sensor Spacer Kits
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I hope everyone is having a great holiday season! I really wanted to touch on this single point about the Duramax diesel #1 issue because I think I missed a really good little bit of info when it came to real power loss from a clogged up MAP sensor.
What happens is the MAP sensor or the absolute manifold pressure sensor gets clogged up with soot from the EGR and therefore can no longer read correctly not allowed the engine to know how much air or oxygen is going into the engine. this mean that your duramax Diesel engine is not going to be running at peak performance.
now when I drove this chevy 2500 Diesel after I cleaned up the sensor it was very noticable the power gain that happened. the truck was much more responsive. the turbo boost felt much stronger and in general the truck felt like it had gain some horse power.
I also give into how to clean the sensor, the location of the map sensor on the duramax diesel engine and how to remove and install the map sensor.
so if you guys think your duramax diesel is feeling a little slow and you want to make it faster with more power. check that map sensor to see if it's getting clogged.
anyways guys I hope you have a good rest of the holidays!
00:00 - Duramax Review
00:43 - Duramax #1 Issue -Map Sensor
01:15 - Location/Function of a Map sensor
02:35 - How to Remove Map Sensor
03:12 - What a Clogged Map Sensor looks like
03:53 - What a Clean Map Sensor looks like
04:21 - How to Install Map sensor
05:33 - Map sensor HP Power Gain
08:40 - Map sensor Spacer solution 
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A big "Thank you" from North Carolina....I work for a petroleum company and my work truck is a '21 3500 Duramax utility bed. She's tipping the scales at almost 14k lbs with just my tools. I'm always pulling heavy loads with her. Popped my MAP sensor out and it looked identical to the one you cleaned out on the previous video. I'm pretty excited to run her, come Tues morning 😁
Actually helpful information. Not a sales pitch for a sponsor. Thank you. I own 2019 it’s my first diesel. I love it and I will pop the map sensor and take a look. Thanks again.
Pulled the sensor on my 2019 with 38K miles and it looked like yours. Cleaned it up and the truck runs much better. Thanks for the tip!
Once it is cleaned properly the little bulb is actually a blue colour. Also it’s best to clean it in the position that it sits in. This helps not to blow crud etc up into the electrical area.
Another excellent video Alex. I really like that you offer a solution that just about any owner can do. I’m a Cummins owner, but I’m sure all L5P Duramax owners can benefit from your video. All these modern trucks are excellent machines. Keep up the great work. Merry Christmas!
Thank you! thats the goal, I'd like to branch out to all 3 of the diesel pick up truck brands. starting with the duramax, hopefully these owners find this stuff useful!
YEAH PART 2!! Keep kicking ass and taking names brother! Love the videos! So informative !
Thank you sir! appreciate the support as usual
Great video. I cleaned my sensor today as you described. Engine immediately threw trouble code #P00EB. I drove the truck for about 10 miles at highway speeds and the trouble code went away. The engine is running much better since!
I have a 2023 2500HD as a work rig and truck just hit 5k when the check engine light came on, it's at 7,400 miles when I checked the MAP sensor and sure that did the trick. Thanks fella.!!
Why code came on it ?
Glad to see your video. Just turn 37k
Really enjoy my 2020 lt still run strong, but I be checking that sensor.
Thank you! My 2021 Duramax had not had any issues but at 80,000km I figured after watching this, I should at least give it a go.
There was so much soot accumulated inside that sensor I literally thought there was some kind of material/part inside that I had to work around.
$15 at AutoZone for the right spray and a good soaking and everything dissolved away. Fired up and apparently I didn’t break anything. No codes….
Taking her out on the highway tomorrow and I’m guessing my pedal will feel a little more reactive after this! Thanks!
Big difference after just cleaning mine. Thanks
Hey buddy, thank you for the great video. I pulled mine out and it looked just as bad cleaned it and put it back in. I think it’s a great suggestion you made. I’m taking this out and cleaning it at every service.
Engine mine looked like that at 22,800 miles
Can't wait for the next video. Great review 👏 👌
Thank you sir!
Excellent report Alex, really appreciate your expertise.
Thanks James! happy holidays!
Whoa. Just turned 37k miles, definitely gonna have to have a look at this.
Thank you for doing this video. I have a 2018 GMC HD with 80,000 Km on it. Until I came across your video, I had no idea that this was a maintenance issue. I pulled my sensor and sure enough it was covered in soot. After cleaning and reinstalling my engine seems to running better. I looked through the GMC Diesel supplement manual and there is nothing in the maintenance guide that suggests that this should be looked at. A big fail by GM if you ask me. Maybe they want this part to fail so you have to come in for an expensive fix. Anyway, 2 thumbs up.👍👍
Excellent vids. New subscriber….
On my 5th Duramax. (2nd L5P)
Gonna go get some MAP cleaner right away!
Thank you sir! Super easy clean and fix but if you don't check it you could be losing some power.
Update - mine was a mess with 57,500 kms. MAP all clean now. New air filter too just for S&G's!
Thanks very much appreciated
You are a blessing.
This video was very informative. CAN YOU TELL ME WHERE TO FIND THE FUEL TEMP SENSOR ON A 2016 CHEVY 2500 DESIEL??????
I have a 2010 that is throwing the mass air flow sensor code p101. I replaced it, cleared the code and it's still showing back up. Could this be causing that.
Do you have any videos on the cp4 issue on the 2016 LML 2500 duramax 😊
Do you need to disconnect battery before cleaning? Thanks
Can you spray anything in the hole to help clean
Does check engine light go away on its own or have to manually clear it?
I’m looking for the Barometric pressure sensor I can’t find it anywhere on this same vehicle
Can you get a check engine light with this problem ⁉️if so. What that would be ⁉️ thanks
So the MAP sensor dirty should cause poor mileage as well right? So if it’s never been cleaned or changed at 200k miles, now would be a good time? I’m still trying to learn how to drive mine for max power and mileage, you can’t hear the engine or exhaust at all so I never know what gear I’m n or how well it’s doing unless I watch the MPg screen. New diesels and all the restrictions on them are terrible. If you use a EDT additive of some kind will it keep the MAP cleaner?
I have a 2005 lly and got a trans done and headgaskets efi live with the edge insight and the monitors for the turbo vanes and egts. Got the truck back no boost no boost leaks could it possibly be the map sensor making it do that I changed the maf sensor didn’t help
Love the vids man. I'm looking at a 2014 6.6 duramax LTZ. I cannot find a video on it. It has 100k on it and all emissions bull shit intact. Thanks for any advice.
Have an 07 6.6. So will DPF filter cause the map to clog? Or clog faster? Have the pressure differential code, forgot the # but dealer says dpf filter and system needs cleaning.
TKU sir!
Clean it once; add the S&B spacer and you're set.
My 2023 has thrown a p0402 code 6 times dealer replaced MAF, EGR, done ecm updates. No resolution any ideas
Thanks a lot for the video. My 2020 Duramax to my knowledge has never been looked at in this area. I’m sure it will be very shortly. Quick question about changing oil. My gauge says I’m around 20%. Is it time to change oil?
I change mine every 4 to 5k regardless of what DIC says.
I just cleaned my map censor and it was extremely dirty. Please clean it and it will help.
Mac air cleaner my question is, can you use brake clean
So mine has a weird idle sounds like a mis but not bad and i got a p0612 witch is a ficm code and thats the only codei checked wiring no issues and it drives pretty good down the road could this be my culprit?? Please help!
You make me clean mine after 120k km it was dirty
Great video!. Do you recommend the S&B map spacer?
It's pretty much the same spacer from all the companies. But I have heard they last.
Is it necessary to disconnect your battery when removing your map sensor? Did clean mine and now have a check engine light.
I have a 2021 gmc sierra 2500 HD at4 my check engine light came on the code is P20EE what should I do
Cleaned map sensor and then engine reduced power light kicked in. Any ideas
Does this apply to the 2024 l5p?
Did you ever hear anything about GM buying back the L5P diesel trucks.
After I cleaned mine on a 21 duramax it sent a code… any ideas
EGR on a diesel sucks! Deleted my Ecodiesel 150,000 miles ago. Oil stays clean and of course MAP sensor still clean.
Exactly EGR is a killer on modern diesel engines.
Any ideas on the p0087 (fuel rail pressure low) code? Dealership replaced the o2 sensor saying that's what it is but it went right back into limp mode. A second mechanic said it needed all new injectors, o2 sensor and Map Sensor.....
Did you get your problem resolved? If so what ended up happening?
Hey Alex, any problems yet with the Power Wagon?
Yes!!!! my winch broke. That video is coming soon!
My truck is 2018 2500 hd diesel I have 111000 something around there lol I just took mine off cleaned it so they say about 20 miles it should turn off I didn’t want reset the code I wanted to see if it t worked or f it did it should just shut off anyone?
$65 put the spacer in today, my map sensor was clogged with 40k miles
i have a 23 model l5p with 2,230 miles. My check engine light came on and the fan roars when accelerating. Any idea??
What did you find out? Bearings in fan clutch?
Better check mine it has 103k and never did this since new.
Can anyone tell me why the cool down of the 6.6 turbo does not require a cool down……do we let it run before shut off…..
I hav a 24 6.6
would this be a problem for a deleted l5p
If you can delete it. I would highly recommend lol
You delete, dealer won't take on trade in.
When this sensor plugs up it will not set a MAP sensor code either. It usually causes other codes that can be tricky to diagnose and might lead to misdiagnosis. I always check this sensor first.
Where is the BARO sensor on these trucks?
Following
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I had mine just as clogged as shown here…at 11k miles!!!
I clean mine every 15k miles
deep dive, huh?
This issue is minor compared to the crankshaft issue shearing pins!!!beware GM owners…2024.duramax
I generally don't think it would be something I'm worried about. those pins from what I'm told are for alignment only, the gears and driven by friction from the correct torque.
L5P man, not 5lp 😂
Once again a non issue. L5P owners know
Epa nonsense
Imagine if he just replaced it instead quick fix it so much more power
This guys a tool , its never the map sensor, its never that easy ,1 out of 50 may be a bad sensor
This whole video is how to change one map sensor that sits right on too the engine , dudes a goof ball
GM technical bulletin indicates that a plugged TMAP on the Duramax is nothing to worry about. When you read the forums and see what the TMAP sensors look like in all kinds of L5P engines, it's quite apparent they can be totally plugged and not affect a thing. Hard to believe, but it's pretty much the norm.
GM Bulletin No.: 20-NA-043: Due to the sensitivity of the sensor, Do Not use any chemical cleaners including water and Do Not use compressed air to remove contaminates. Important: If sensor is covered in soot, this should not prevent the sensor from functioning properly and it should not be replaced. Do not attempt to clean soot off the sensor. This could cause damage to the Thermistor
That's why I did a reroute and now the oil and soot doesn't go back into my engine where it shouldn't be goes into a catch can and in turn I can empty it out however many times I need to a year or whatever