2011 GMC Sierra MAF and IAT codes [New MAF Installed]
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- Опубликовано: 30 сен 2024
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![No Start, No Crank - Suspected Bad ECM - [Auction Truck]](http://i.ytimg.com/vi/hhbmJprhino/mqdefault.jpg)
Paul please go and get real glasses walmart readers are bad for your eyes. have a very close friend that is a optometrist he tells me that most of them the magnification area doesn't line up correctly with your eyes everyones eyes are different and can really harm your eyes
Thank you Paul and Caleb for making these detailed educational videos!
Thanks Paul, great video! I love the throwback to Pete's shop; I miss those days! I started using clear nail polish on the wire holes instead of liquid electric tape, as it makes less mess and you can still see the wire colors. I feel like when you use the Liquid stuff it gets on your hands and you pretty much need a Dermatologist to remove it.😂
Hi Paul and Caleb, Caleb you should put reading glasses on the mouse in the intro!!!🤣🤣🤣🤣🤣🤣
Your boy editing and giving you the business for your wire clipping and saying grey is so good. Good methodical approach as always.
Thank you for the comment. It is great working with my son! Love that you guys get to be part of the banter too
Your diagnostic videos never gets old. Very informative thanks Paul 😊
Lol am I the only one that misses these "old school" SD videos? Thanks for taking us back Paul.
We will do some more at Pete's shop! Thank you!
Absolutely, you are not the only one that misses them! SD has always been my main "go-to" for diagnostic instructions ! Yes, I have his book in paper too!!!
Give us both. The atmosphere with you Caleb and Danner is great. Keep giving us both if you can, I've watched and learned from many many case studies at Pete's. 👍
old school all the way
IF you did swap the sensor grounds-- and there was a future issue, wouldn't the computer give a code for the wrong thing? Is there not a sensor/ pid monitoring the sensor grounds on the computer? Or does it only monitor the signal side? and If so, why does the ground have to return to the computer at all? Why doesn't it just use a common local ground?
Good question. The ECM monitors the signal wire but it is compared to the sensor ground. And since they are both sensor grounds, the noise level will also be very similar if not identical.
The reason sensor grounds go to the board is the help eliminate noise. You will have noise on a signal wire but this same noise is also on the sensor ground, so it cancels the noise. Think of it as your voltmeter.
But yes, great questions again and this is why I hesitated and did my research, I needed to know.
Thank you, Paul. I have considered first cleaning the wire insulation with electrical cleaner/solvent (the spray can type) and marking the wire somehow where I pierce it. I know it doesn't matter how small the pierce is; oxygen enters at even the molecular level and any contact between copper and oxygen oxidizes. Also, it's true that the smaller the hole the slower the oxidizing and that some locations on a vehicle must render the process really slow, so if contact is limited to molecular level and air flow is nil... I wish non-stick really thin vinyl tape was available. I worked in a Land Rover aftermarket shop once; somehow there was access to that; some European OEM used it to wrap harnesses. Even with no stickum on the tape it stayed wrapped. Then, you could just doctor the pinhole with dielectric grease (It is meant to insulate, no?) and wrap a few turns of that thin vinyl over to cover it. Problem solved without solvents and glues.
I bought a scope and finally getting some use out of it. Learned a great deal from you Paul, loving the classroom setting in premium as well. The only problem I'm having with my scope is learning how to slow down my waveform, but eventually I'll figure something out. Once I get that baby up to 88 miles per hour, "everything will be fine"
Haha yes!
NICE REFERENCE!!
Do not forget the 1.21 gigawatts
50 shades of grey wires, which may or may not be tan 😁 Excellent share of knowledge with this one Paul, these fundamentals you teach get cars in and out of the shop everyday with the amount of learning techs ( Like myself ) watching your content! Also thanks to Caleb for the seamless editing, this stuff could be on TV!
Thank you so much! I'll share this with Caleb.
And yeah man, holy crap was I having some brain issues there lol
Really appreciate this comment
@@ScannerDanner It must be chromatic aberration from the glasses. Yeah! That's it! It's the glasses!
@@fascistpedant758 or the typical brain to lips misfiring. 🤣 we all have that at times, worse with age.
Pffftt! Punctured wire? Don't you just love these keyboard technicians telling the most qualified diagnostician on earth how to do his job?
When I was a teenager We lived on a hydro strip through land. The micr in the yard were unbelievable. My dig use to kill them and drop them in Thecwinfdiw well.
Try to store liquid tape upside down.
Legendary, Paul has done so much for this industry. Not sure if he knows how much. 🤙
Thank you Brandon!
Long wire to short wire. Appears they are broken at different spots or thats just how it looks in video. I repaired a main harness that was cut on a slight angle in an accident and thats how i lined up all the same color circuits.
Damn dirty rats
I had a jeep gladiator a rodent got to the wire for a coil was throwing coil secondary field code, I wouldn’t have guess it because it was hard to see the wires but when I went to swap coils and everything to see if the code would move with the coil the whole wiring harness came with it lol
great find! i find those style butt connectors arent the best since the heat shrink gets damaged when crimping
i prefer a plain metal crimp and slide heat shrink overtop after crimping
Yessir, that ultralight gear is a real bugger to tie if you leave those readers at home. I fish for catfish. Big line, big hooks. ;)
Never mind, paused the video too quick. Literally hit play again and there it was
Paul/Caleb,
Great video and fix - thank you!
Paul (in MA)
Awesome video! Recaps on the basics; pull down/up and thermistor circuits are meal tickets!! Thanks for always putting out solid content! You guys are awesome!
Thank you!
Those damn little things have gave lots of headache i have two cats but still nothing im gonna try peppermint oil
Great video. I will also say that having an outside cat is no guarantee that you won't have rodent damage. About two years ago my 2014 Mustang GT had some wires chewed through under the hood and we had quite a few outside cats at that time. There were quite a few cat prints under the hood so I don't know if a cat was chasing a rodent up in there or the cat actually chewed the wires.
cats love to chew on things, especially wires. I don't know how they never electrocuted themselves here over the years, but they'd chew all over lamp and extension cords, to where bite marks clearly showed bare copper inside. 🤣 them crazy cats lived very long lives (indoor cats)
@@throttlebottle5906 Everyone who I told that I thought that one of the cats had chewed the wires told me no, that it was some type of rodent. Two of the wires were chewed right up to the connectors so I had to buy new connectors and splice them in.
Thanks, Paul and Caleb. Love you guys and your videos.
whatever you do, do not pepperspray the engine.
Lol okay 👍
what, you didn't like the "tear gas" coming in through the vents next time you drove it? 🤣🤣
man its been a while since you did one of these videos out in the field, i missed them.
Experience diagnosis master nice video saludes noel matute
Don’t be blaming the rodents giving them the bad rap. Twice I’ve opened the hood on a car with electrical problems and had a Bunny Rabbit fly out.
And yes both times I screamed like a girl.
No offense to them but highly surprised they didn't catch that rodent damage before calling you in my opinion a quick visual examination would have caught that .
This is my buddy Pete. He doesn't even look on these, he just calls me in
I just can’t believe there are operating shops that can’t handle basic circuit troubleshooting… should not even be working on vehicles in 2023.
This particular shop, doesn't even look at them, they just call me to do it
Hi Teach! Great litle video, learned a TON! 🎓
One suggenstion if I may, you should cut the end of them chewed wires before touching them? I wouldn't want you to get poked by the wire after being in the mouth of a rodent! Them 🐀nasty little basterds have some nasty germs. Ones you can die from! 🪦Customer needs some moth balls🪤
I won't comment on the pinkies♎ or the swiss cheese🧀🧷📌 That was an aero space type wire repair at it's finest in my opioin✈
Stay healthy my friend:) 💌
I've been learning alot watching you on y tube
Speaking of piercing wires. Worked on a no start and about a foot away from fuel pump found corroded wire. repaired it and still no power. Kept going and about every foot found same thing. so someone pierced it looking for a fault obviously. At that point ran a new circuit.
Yeah some people will stuff a test light into a wire and leave a gaping hole and not seal it. Smh, that's definitely not what I'm doing or recommending
Great video guys as always. Have a Blessed Week.
Looks like a quick visual inspection around the engine and it wouldnt take long to find the damage , but it always good practice to check wiring measurements
The quick wiring check was the best place to start. You wouldn't have focused on that spot visually if you didn't know where to look.
I saw a passed out drug addict with that same butane solder torch laying next to his pipe. I almost took it because it was better than mine and I was a little jealous….
🤣
Paul will we ever see you so these types of troubleshooting videos with any of the Topdon products with their scope?
Just did one using the Phoenix Max scanner and scope on a LIN bus issue on a 2019 Silverado. We will have it up on SD Premium in a few weeks
Show me another car mechanic channel on YT that has more replys to questions in the comments then this guys, you wont find one.
I try. It gets harder as the audience grows
Ask the snap on guy. Hey do you have one of them cat tools. (Tool guy) you mean for the catalytic converter. No the cat tool. You know the kind that keep mice out of the vehicle 🤔🤔🤔🤣🤣🤣🤣👍👍👍👍👍👍👍 always great knowledge.. with knowledge come power 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥👊👊
Part changers.ahhh. those Damn 🐁
This is AWESOME👍👍👍
Indeed it has been a while since we've seen a video from this shop totally old school😍
This is how a PRO fixes it👍 Love this lecture😍
Special Thanks to Caleb Danner👍
Stay Blessed Guy's❤❤❤
Danner i'm having trouble getting my mitchell d I y set up can I have some help
I have zero control of that, sorry
If my fuel trims are maxed out on my car (+25 stft and 19.5% ltft) and my wideband (that is new) reads minus 1.074mA and 0volt on downstream and tailpipe emissions are crazy rich like 0.8 lambda reading, could it be the maf? I checked for leaks but did not find any also fuel pressure is in spec and hold pressure.
Focus on your downstream O2. No way it should be 0v in that environment. Some systems will use downstream fuel trim
@@ScannerDanner My downstream is stuck 0volt and I try to make them even more rich but nothing happends, I will swap them out because of fake lean condition👍 It's a Jaguar x308 na V8 1999.
Great work there Danner, Was the two tan wires not ever so slightly different lengths indicating which was which? I know that may not be a repeatable way to identify two similar colour wires but i would have had a shot at it. love you lots, keep up the good work :) Sorry should have watched the whole video before commenting, I see you noticed the wire length, sorry just ignore this post.
As a monthly subscriber to the premium site, I still like coming to RUclips to watch the vid's. 🤷♀
Hey Paul a couple of drops of acetone in the liquid electrical tape brings it back to the proper consistency.😀😀Thanks guys
tan, the new gray/grey? lol
Hi all! Hello SD🤝
It was always interesting what is so sweet for rodents insulating wires😁
Old school is always cool!👏🏻👍🏻
To build a house earthquake proof you need strong foundation
True
Thank you for teaching us 🙏Scanners Danners God bless you and your family
The problem with outdoor cats is that they kill everything for fun and don't even eat it. I barely see any birds since the neighbor moved in with two cats. They attack whatever moves.
Absolutely true. We have 4 and we never let 3 of them out for that reason. "Bean" our resident hunter killer is 14 and he is the only one allowed out. I couldn't keep him in if I tried. But he's slowed down a lot in his elder years. I'm finally seeing rabbits again. I've learned he is NOT allowed out in the evenings in the spring time. I cannot hear another baby rabbit scream.
Cats are ruthless man.
thats ok with me. Damm pigeons are just rats with wings. Go cats!!
Always learning from these videos! Thanks Paul and Caleb!
Great video Paul, and a great way to demonstrate the knowledge acquired over the years to know what to look for! The owner (no fault of his own) changed the sensor without testing to see what was needed. Paying for your diag/experience fee saved you time and no parts cannon was needed.
I love all the knowledge you give out and always use things you teach us on the RUclips!! Now with that said I do enough repairs that I know time is money and sometimes being quick with repairs can help. So if possible I would love to see some videos of you using the powerprobe companies etc 3000 it's helped me many times but just want to see your opinion as you are an master tech!
Cried like a baby 😂
Good information.
Those style wire strippers are just the worst
Great crimper! Best ones I've owned. But I agree, the stripping part sucks
Hello Paul! What’s that scope you’re using ? I see it’s a snap on , but which one is it ?
Which scope do you recommend ? I like the picoscope but it’s kinda expensive
Verus
Would the P0113 or intake air temperature code cause the service traction control message to pop up?
If your check engine light is on, yes, it is common to also have a traction control light on as well because engine torque management is part of the traction control system
@ScannerDanner your the freaking man dude, I'm not sure you truly realize what you do for the everyday man. I understand your trying to teach techs and make them better at there job but those same words help regular Joe's tremendously and forever we will be grateful.
@@shawndinterman2219 thanks man, I love to help, however I can
Sir I have a device called multi probe if there is a problem with a sensor wiring I can tell in just in one minute by disconnecting the sensor and touching every wire with probe and probe tells me if it's a 12 v wire, 5 volt , ground or signal wire. By simply touching the wire with probe you can tell if this wire is connected or cut from some where. Very Usefull device for all car Electricians. Every body should have one .
Got a link?
Brilliant, as always!
Regarding the whole crimp vs. solder thing, I used to be 100% onboard with marine grade crimp connectors, but in September of 2022, I went to work for a new company that specializes in diagnostics and post-repair validation and calibration of accident vehicles. A few months back, I had a 2023 RAM 3500 that devoured a fencepost, straight through the wheel well, right through three 80+ pin bulk connectors (Engine main harness, transmission main harness, interior main harness), and into the cabin.
"Okay, so just replace the harnesses," I hear your say. I would agree! Insurance, and the shop, did not. Pull the cab, pull the dash, re-run three main harnesses; it's a huge labor cost. The alternative was to buy new harnesses, and use the intact bulk connectors to splice into the existing harnesses. 300+ wires, I wasn't about to use crimp connectors! We joked about it, calling it a "harness tumor." LOL
As it was, feathering the soldered splices along as much of the harnesses as I could, space got tight.
I still use those wonderful crimp connectors quite often on smaller repairs, though! Super-useful, and real time savers! Worth noting though, that some insurance companies will not accept anything other than a solder and heat-shrink repair.
I would think the labor bill to patch that many wires would have easily paid for the price of a new harness. But then again when I think about it some dealers charge stupid prices for harnesses. There been many times I been on the phone with a dealer and asked them if that part had gold in it .
TAN LOL!!!
Great video Paul! I’ve learned so much from you watching your videos in the past year working on my car and hearing your voice as I check voltage readings, I’ve even helped my neighbor find a short to ground on his car. Thank you! For providing all this great content and your knowledge for free here on YT you are an awesome teacher. May God bless you and your family. One of these days I need to pick up one of those Phil’s &@&@😂 Caleb as always great editing.
Thank you so much! Love hearing these kind of comments.
And yeah 🤣, sorry about the probe comments at the end. I just can't help it. I watch too much of The Office
Trying to figure out which tan wire is for the oxygen sensor or not, I would probably do a continuity test between the sensor connector and the broken wire and from the pcm to the other end of the broken wire (if accessible). Even though at the end of the day it doesn’t matter, peace of mind always makes me feel good
For sure! I was going to until I saw the length differences and that was solid enough evidence for me. Thank you!
Thanks Paul. Another amazing video. I plan on joining your premium channel.
Looking forward to seeing you there Donnie! Thank you!
What is Your scanner tool?
I'm using the Snap-On Verus Edge in this one
19:27 😂😂
Thanks for another great video. Team Danner are the best
great video ,good job, thankyou
great job i thought that all computers had defaults where the vehicle would run with maf not working
Not all do, but this one does. It just didn't meet the two trip detection yet to put it into that default mode.
FINALLY A COMPLETE VIDEO YOU REMIND US OF THE GOOD OLD DAYS HAHAHA AMAZING VIDEO DUDE PAUL
Glad you liked it!!
👍👍
Got problem with Chevrolet Colorado crdi.p0101 code,I've replace filter,mag sensor,check wiring harness,turbo,and catalytic, calibrate injectors,still p0101 code appear after few miles run,, vacuum leaks test,, I'd notice that the code will came out when I accelerate with high gear position and and sudden released accelerator pedal the came that the time check engine light came out with p0101,
Define the code please
@@ScannerDanner thanks for the reply,,got p0101 mass air flow sensor circuit high,,,I followed your video about voltage check and body ground,,I find it so hard to trouble because it will just came out when I hit pedal hard at high gear then suddenly release it,, code came out again,, delete fault codes,it run goods again,,
@@richwerkz6931 circuit high codes are typically an open in a signal wire, the sensor itself, or the sensor ground circuit
Thanks for info sir?id already try replace it but still desame,,
Maybe the ecu is the problem
Your torch you can unscrew the top and pull put the heat coil attachment then you will have a flame
For sure! This is the way I normally do these. Thanks!
The blurring image was classic. Well played Caleb….. just remember my day has come AND yours is coming too. Lol
He's really perfected his craft. Thanks for the comment! Someday he will know, right? 🙂
@@ScannerDanner first time it hit me was when I crawled under a car to grease a lower ball joint…. I couldn’t get back far enough away to focus. Apparently I’d been compensating and hadn’t realized it yet.
Funny thing is that I’m usually confident enough not to be a “compensator”. Lol. That’s why I went straight to Walgreens for a set of readers.
Got nothing to prove…. Nothing to hide. #confidence
I hate using those style strippers in tight spots. I use the other style like Kleins in those situations.
Agree, the stripper part sucks. The crimping part is my favorite and why I bought these
I honestly like this format better than when you’re at your brothers shop. Maybe if you had your own tool box at his shop so you aren’t always yelling at him because you can’t find something. Love your videos Paul!
Lol I can't find anything in that shop 🙃
@@ScannerDanner just getting older will make it worse. no what was i gunna comment on? hmm nevermind
So a question, whats an acceptable charge for diag and fix of something like this, like 4 hours? Or is that excessive. Thoughts
I think we need to stop talking about charging for "time" but I understand needing some type of gauge by which to measure. It took me 5 minutes to ID that problem, and being paid by time says my expertise isn't worth very much. Make sense?
I think the diag and repair for this should be at least $300? But it depends on your market and where you live.
I've seen many shops range from 140-200$ just for diagnose here in Texas
Nice old school video mr Danner! I'll miss them 😉
We will do some more at Pete's! I felt the same way when I was there. We need to do more. Thank you!
On broken/damaged sensor ground wires, do you always have to connect back to a sensor ground or can you go to a battery ground? Just curious.
I always hated those type of wire strippers as you always have to have a long enough wires to reach the stripping area and in a machine or an auto there
is always those few shorty's to make it difficult. Great video Paul and Caleb thanks so much.
You definitely want to use sensor ground, not battery ground. It is for noise reasons.
But, I have had bad computer circuit boards on one leg of a sensor ground circuit where I've used a battery ground to get the car back on the road. It's not ideal, but in that case who cares, it needed a computer and there wasn't one available and it got the car back on the road.
@@ScannerDanner Thanks so much Paul and God Bless you and your family. Take care
@@ScannerDanner I'll add to that, besides noise, while cranking and/or vehicles loads turn on and off the grounding differential will change from battery to the engine, body and ecm. while it may only be milivolts most of the time, that's still critical on low voltage sensor circuits. also large loads of cranking, fans, pumps, abs and other electrical things(steering/brakes) could possibly make the total imbalance multiple volts and the computer will see all that, as it and the sensor doesn't know any difference or may have dropouts.
The only thing that fixed the no spark/no fuel injector pulse on my 1996 F150 was a new pickup coil/hall effect sensor.
Is this something we've talked about? Thanks!
@@ScannerDanner you did a video with Eric, the car guy, awhile back on a bronco with the profile ignition pulse system that helped me tremendously. I was able to verify the pickup coil fried in 5 minutes although it took a few hours to replace it with having to pull the gear off and get it back on but she runs like a champ now. Next up is the fuel tank diverter...
yeah, they're fairly known to go bad. my mind is trying to say, if there's bad plug wires, wide gap plugs, bad cap/rotor(think some still had them), they'd arc mad lightning bolts around inside and blow the pickups out. I may mixing the years/models/manufactures some. but lol, this isn't the late 1990's to 2010 anymore and my memory of the dinosaurs are getting rougher by the year, even thought I own and work on some here and there. 🥳🤡
Now which of the tan wires go to which of the tan wires?
They're not tan, they are GRAY! Paul said so, many times 🤣
Lol there was a rift in the space/time continuum
@@ScannerDanner GREAT SCOTT!
@@bifftannen3167 must have been something wrong with the earth's gravitational pull that day. 😆
Nice to see u bro
Great job
First
Tale of the ten gray wires... :D
Haha right?
I liked the humorous interpretation of that. :)
Funny and educational video, thank you both for your efforts!
As a marine mechanic who moved over from auto i can confirm. All his theory and testing transfers over
How does one go from auto to marine with no marine experience? I’ve wanted to get in another side of mechanics. Always get the no experience line
Thank you so much Andrew!
@@philh9238 it’s not hard at all my guy prob the easiest thing I have done just gotta find a spot you like check some dealers out and start working. Marine is 10-15 years behind auto in electronics and diagnostics capabilities. Child’s play compared to auto. I always say an auto guy can go to marine but a marine guy can’t go to auto
@@ScannerDanner thank you SD I watch your stuff just to keep fresh on theory and maybe learn something new, diff way of testing I haven’t done before or looking at it diff
@@philh9238 I find my self looking back at my school training and going ohhh this just a simple version of this in auto hardest part is learning the cooling system. Some motors use open cooling other used a combo of closed and open
i got a 2017silverado and i am getting maf and temp sensor codes is the diagnostic test the same as what ur doing on this video
Yes, 100%
Thx for video, what Typ of piercing probes do you use ?
Phil's Electrical Probe, you can find them here www.aeswave.com/scannerdanner
Thank you!
cool
I’ve got a MAF fault. Replaced it with an OEM unit. Still got a problem. Truck hesitates in second gear around 35MPH when accelerating. Been yanking my hair out!
What is the fault? What year, make, model and engine?
@@ScannerDanner The code is p0101. Maf Range code on my 07 chevy v6 1500wt. I’ve checked for exhaust back pressure with a guage, checked for vacuum leaks at the intake system. I did recently replace my spider with rebuilt unit. It had a fuel line leak develop. Thought maybe i burnt up my cats but exhause back pressure test doesnt show it. Smoke tested intake as well.. i have resorted to parts changing the tps, map, maf, spark plug wires, icm, coil since they weren’t expensive…well the maf was! I have 210k miles on truck but it doesnt burn oil and runs well before the code.
@@u2ooberboober when did this code start? Are you using a factory MAF sensor?
An exhaust restriction was my first thought. Did you check both sides? Dual cats right?
@@ScannerDanner This code was discovered after I replaced my spider and clearing the missfire and rich codes. I even replaced the front O2s. I did run rich and had misfires when the line broke. I checked both sides since there are 2 cats but no apparent clog. I ran cat cleaner as well. The truck runs fine after leaving the hesitation zone in the upper gears. I do have a scope and checked the square wave of the MAF. I do see a bit of noise on the waveform. I checked all grounds as far as I could find. I even went as far as to run without the altenator to see if I might have bad rectifiers.. still spikey and noisy thus my decision to replace coil and ICM. Fuel pump amps is 6amp and fuel pressure was normal I believe, can’t remember the psi off hand. Ran it with the guage hooked up and no dips or peaks in pressure. I was leaning on weak pump regulator or clogged strainer but it doesn’t seem to point in that direction. I was thinking of pulling computer and inspecting the board for cold joints or bad capacitors if that is possible. (The hesitation is on flat or level roads..never on a down slope)
@@u2ooberboober I would revisit the exhaust back pressure tests. Pull the upstream o2 sensor on each side and you want no more than 2 psi at 3000 rpm in park.