Diabolical Diagnosis - Hemi Ram Stuck at 1500 RPM with P2128 and P2138
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- Опубліковано 23 сер 2024
- This 2011 Ram 2500 with a 5.7 Hemi intermittently goes into a limp mode where it sticks at 1500 RPM until you cycle the key. It has codes P2128 and P2138 for APP2 voltage correlation and APP2 circuit high.
Thanks to @L1Training and @SouthMainAuto
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Sorry guys, our donkey powered internet has been on the short bus to Struggle Town. Hopefully it uploaded correctly...
Hahaha 😆
Is Starlink available in your location? Steve Summers ran a stream on his Starlink connection a couple of week back and that is something that was just impossible with his previous internet provider. It's just a thought.
*Thank You* for the videos Wes. They really are greatly appreciated due to the time taken to make then to edit them and especially the inevitable _Wesisms_ of humour (knowledge?) dispensed along the way. 👍
Alright, who put the struggle bus on the Wi-Fi route?
Wait you're working with donkey power? Where do I get such luxury
Not to worry
$500 for a true diagnosis and permanent fix of an intermittent problem sounds like a steal to me. Great job tracking down the issue.
I think Wes just underestimates the value of his work. I mean, if the customer isn't happy, he will just not return. But I doubt that's a problem by the quality of work he's doing. (just look at his parking lot) 😬
most shops would have just replaced computer for $1000+ and not truly fixed the issue. then they would have gone through part monkey swap at another $1000 and still not fix the issue. Intermittent electrical issues are the worst, once i had an issue with Solder joints expanding once heated up on main relay. took forever to find problem trying to waiting for it to fail on a hot day. great job wes.
@@alanprather8399 agreed, hard to track down requires a good shop. The average shop will fire the parts canon at it without finding the cause and just eventually give up and let you pay anyway or fix it by surprise.
I'we paid 500 in a dealer, and still didn't get the problem fixed. Next owner for the tractor called and said it was the switch that was broken inside and causing malfunction really randomly. I wasn't getting that malfunction since I turned the switch just enough not to short out and blow the fuse
@@RubenKelevra Almost impossible to find a mechanic this good and this honest.
Wow that was an epic diag, Wes! Intermittent issues can be an absolute bear lol. Definitely key to determine what conditions make the car act up, and test it in those conditions... Even in the snow or rain or brutal cold 😉
Plus no parts required!
Yeah….very nice job there. I doubt even a dodge dealer would’ve fixed it the first time around. They probably would’ve thrown an ECM at it first…
Hazardous duty pay.
@@eric_seguin Danger pay more like, this is a job worth the danger pay for sure
@@WatchWesWork You didn't charge him for the 3" of heater hose?
Naturally you get stuck with some of the toughest problems, cuz if it was easy, people would fix it themselves. Thanks for sticking with this one, Wes.
I worked on my truck to the tune of around a thousand dollar’s chasing a open circuit that the scan tool was telling me. Ended up taking it to a dealership for another 450.00. They found it 😡.
So it’s not always easy but I tried.
@@stevanrose7439 When I was in my early teen years, for a brief period, I had a neighbor named Steve Rose!
Or maybe take it to a dealer.....for a lot of money.
When you start to see your truck on Watch Wes Work ... you know it is time to buy a new truck. I hope you feel better sir.
Nearly every Chrysler product after 2005-2006 uses drive by wire.. and after 08 its nearly every manufacturer. Not vehicle specific and no need to worry and more than any other vehicle... unless of course you mean this specific truck in the video is yours lol then yes, maybe a new truck is in order
@@gunners4129 it was mostly a joke but ... It does show that year and generation is starting to age out.
@@zomie1 They still sell that body style as the RAM Classic, now I see why they call it classic. Christ I'm getting old...
True, and the routing is less than ideal. But out of experience I honestly would worry more about a mouse jumping up in there overnight during winter. I'd say a quarter of my wire repairs are winter rodent related. And that can happen on any generation and in alot of cases its upper intake harness related and could cause this exact scenario. I see it alooot on Chrysler minivans under the engine cover. Same with chevy traverses.
None of this is me trying to be corrective, just saying I miss working on cars from before 05 😂
Fellow wrench thrower here. That spot is very common to rub through on the fuel rail and cause typical chrysler fire problems. Usually after the 5th or 6th hemi engine swap the tech will notice both sides doing the same thing. One of the wires in that loom is 12v Batt on a 20amp fuse... metal fuel rail, hemi tap, becomes hemi torch.
Wrench thrower is an appropriate term for intermittant problems like this one lol
Wow..
The knock sensor loom where it comes up and around the front of the engine and into the harness is, also, a common area for rub through problems. Passenger side front.
Wes is like the Sherlock Holmes of electrical mystery.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth?"
2 wires shorting against plastic, however improbable, must be cause by moisture, and must be the truth!
"The problem is extremely intermittent..." man, that is always such a pain... you are really good at what you do Wes! Respect to you! (and I strongly believe your thoughts about moisture are correct)
“How am I supposed to fix something that won’t stay broken?”
I think i can safely say this ... We would NEVER bail on you Wes... No matter How hard it gets we will Stick with you throughout and do our best to Help You along the way . Although i cant help ya im an i.t guy but im here to Learn from the best :) Cheers mate .
Very similar thought process between IT and mechanicing, just apply it to the vehicle, it's parts, wiring, and computer(s) instead of whatever electronic gizmo we have to look at
I T Techs have their own nightmares to deal with, so thank you for your service and a good review for Wes. I used to work installing fiber optic cable for Verizon, we had diagnostic nightmares too.
Scotty was right. " The more complex the plumbing the easier it is to stop up the drain"
You know. Most people would just write issues like this off and just give up. Pay for wildly and outrageously overpriced new parts and harnesses.
You’re a man’s man Wes. Putting up with it to find the issue, that, in all reality minus your time, cost dollars to fix.
I have watched this twice and will probably go for a third. At 83+ we had never heard of computers when I was being trained. I found this absolutely fascinating and it is so pleasing to learn new stuff - from someone 45 years younger! Well done , great job.
There were some shops using scopes long ago. The local Dodge dealer had a primitive scope and diagnostic machine that ran on a rail down the center of the shop. It had secondary ignition probes and a gas analyzer. Pretty sophisticated really. I would think it was from the late 1970s.
You are 100% correct the dealer always replaces parts and then makes repairs if the new parts does not fix it. You saved him lots and maybe even the truck.
Great fix. Rewarding to figure something difficult like that out and then find the smoking gun. Great work Wes.
Second comment - the way you got the shot of the wire rub area (back of the compartment, tricky to light, inspection mirror and manual focus) was superb.
And putting the relevant diagrams and error codes "on screen" during the video edit must take you a lot of work.
Easy for the viewer to take for granted. I am grateful.
Another excellent diagnosis Wes. I always learn something from your videos.
Invoice:
2 butt splices $1
Knowing where to put butt splices $499
😉
Nice to hear the shout out's and acknowledgments to the other you tubers that helped or contributed to this complicated diagnosis. Wes is right dealer would have replaced thousands of dollars in parts and still not have fixed the problem.
The most often used phrase I have heard regarding electrical problems in my career is "It must have a short in it." Universal catch all comment. Heard it from customers, mechanics, managers etc. Sometimes that has been used to convey the idea that it can't be diagnosed, or it can't be fixed.
Along comes Wes to really study the nature of the "short" and pick out identifying clues and details that blow away the camouflage and "There you are you little troublemaker"!!!
Well done Wes!
That was fantastic. Watching an engineer who is also a mechanic troubleshoot some of these issues is .... well, no words. Your combination of an engineering mindset combined with experience as a mechanic allows for some of the most intelligent automotive troubleshooting I think I've seen anywhere. Thanks much, man. I really appreciate you on my Sunday mornings.
Wes, this one was epic. Intermittent electrical issues are the hardest and almost impossible to track down. You may have wanted to blow it to bits a few times but you stuck to it and did not resort to the parts canon. I would think an accel pedal sensor(s) plus a computer would have been easy to justify based on what was seen. Keep up the fantastic work.
Your skills never cease ro amaze me. Wish you were close enough to be my mechanic
No s**t. He's 2 1/2 hours from me but I'm a' thinkin'...... hmmmm...
Amen to that Matt.
Yep- he about three counties south west of me. I been a thinking also:)) no
I
Yes
Wes when I was a younger man working at a friends shop he always told me that anyone can fix the easy stuff but when those types give up and take the problem to guys like you and him that take the next step diagnose before throwing parts at it , we saw lots of cars and trucks come in with lots of new parts , the parts throwers had thrown at it …literally hundreds of dollars of new parts and the same issues they had before all their check book had been spent . Barry would actually diagnose and confirm the problem with lots of times very little more spent . Thanks for being Barry .👍👍
Dude, that is some ninja level diagnosing there. If the customer complains about that very reasonable charge, fire the customer because he doesn't deserve to be able to come back. Outstanding work there, Wes!
Wes I’m amazed at what you have to know and the electronic tools you need. I worked as a licensed mechanic in my own business in the 70’s. My diagnostic tools consisted of my ears, a stethoscope,
You guys were SO lucky! I'm so envious of the mechanics of yesteryear!
As a novice watching I have no problem following along with your explanation of the diagnosis. Keep up the good work you do. Those folks you help I'm certain are singing your praises to those around them.
amazing diagnostic skills Wes. you're right, a dealer would have fired the parts cannon. this is why we watch your channel.
I have been an electronics guy all my life (and I am old) and consider myself to be an excellent trouble shooter. What impressed me most about your skillset is not once did I hear a mistake in any terminology or the logic you used during this entire video. That is incredibly rare even among skilled electronics techs.
WES, Ya lost me at APP1, ! At 67 years old, I learned points And condensers , leaded gas carburetors and manual transmissions from... Motor Manuals!
YOU my friend are at a different level with mechanical abilities!
Computers in vehicles and Computer diagnostics! Hats off to you!
I can't fix this stuff, nor even want to try! Good stuff!!!
In addition to wiring tug tests and such for intermittent issues, maybe we now need to spray water along harnesses and connectors.
Great job Wes!
The absolute best part of this is that you reached out for help with the problem.
Nobody knows everything, and we all need help and should help others.
Great job in finding and fixing the problem.
Thanks for sharing.
wow !! Fixed the old chevy truck carb and still find a needle in a haystack and know what caused the sensor differences in app1 and app2. No one could have done any more for such a hard to find problem. I'm glad someone is happier finding the problem instead of just throwing parts until its too late. Being able to diagnose these type of problems enables your "fix it" power to be about the best around. Keep it up , and don't let those corp people tell you different
If ya' can't reproduce it, ya' can't fix it.
A fundamental truth, and it applies to software debugging too (lifelong professional coder here...)
Kudos on your persistence and insight.
Awesome job, Wes, similar to a recent SMA episode where the dealer wanted the customer to buy a $2000 harness and Mr. O traced the problem down to a bad alternator. Except in your case a new harness would have fixed the problem.
They had already pretty well scammed her on a new car anyway so it pretty well would've gotten sold at this point regardless
Good job. Even back in my day, an intermittent electric problem has always been the bane of a mechanic. In the analog day, you sometimes had to make your best guess.
...parts canon loading...
Retired wrench 5 years and just went through a reduced engine power situation on my gsons 06 Sierra,multiple U codes and throttle control codes , 2 weeks with my 140.00 amazon scan tool here's what I found, a corroded ground wire to the Under hood modual, u code fix and a flat lined downstream O2 sensor causing a emission concern putting the truck in limp mode, wow I feel your pain, am in salty Michigan as well.
Your channel, Eric O.and Diesel Creek are my favorites, always good info.
Yep, those guys are my entertainment also!
Great channels!
An old mechanic friend once told me that the definition of Dodge is “to avoid.” I own a couple and have chased electric issues all over my fathers Town and Country. Great diagnostic work!
Thank you for bringing us along on these sorts of frustrating investigations. These sort of videos are where I gain the most insight!
That was an incredibly interesting video. I would never have figured that out in a month of Sundays. That customer did well to find you!
this is the kinda stuff that separates a good mechanic from a GREAT mechanic. fantastic as always man.
That's actually pretty common but none the less your diag was spot on and for 5 hours worth of time that is money well spent. He got an honest diagnosis and not one part cannon was fired. Great job!
WOW, I am impressed with your diagnostic skills. I was a Avionics Electrician in the Navy back in the 80s and chased wires on F14s and and seen all sorts of crazy stuff that sea water can do to wires. But that was crazy and outstanding work. Great job Wes.
I like these hide-and-seek problem diagnostic videos just as much as your wrench cranking videos. I'm just sorry you had to go through all the headaches.
Really like the way you stick with it until you find the problem. That kind of perseverance is what makes you stand out. Well done.
Your deductive reasoning(?) is beyond me. I would have never figured it out. Mostly because you're a genius and I'm an old school freak wishing for more knowledge. Thanks for taking the time to teach us.
"Intermittent" is a dirty word in the repair world. Good work Wes
That's the damn truth.
Every new vehicle confirms to me just how superior old school mechanical systems are.
You missed the videos on the carb issues eh?
@@MichaelSteeves nope, I'm very familiar with carbs myself.
My father was a computer systems engineer for IBM from 1961 thru 1991. He frequently stated that it is WAY more desirable to be lucky than good when it comes to intermittent problems! ;)
nicely done. Crysler products used to be noted for not starting when wet. They used to say a dog could pee on the wheel and they wouldn't start. Good vid.
Love the tech stuff, I could continue to listen to you hours long. Love the videos.
Tenacity, experience and a mental attitude that will not be beaten. Thanks for taking us on the journey. Customer lucky to have you onboard.
It's these kind of videos I learn the most from. Diagnosing tricky problems like this is a real art and not something everyone can do - firing the parts cannon and turning wrenches is pretty easy by comparison. Less satisfying to watch maybe, but no less valuable especially to your customers.
Hi Wes...I watch you videos all the time, and you have unbelievable patience when it comes to diagnostic issues...making you "the wizard of mechanilectrical diagnostricky" !!! Now for your health...and here I speak from over 40yrs experience...go to your local shop and get yourself a few large bottles of bitter lemon, or tonic water (generic brand will do). For your first "dose", drink a glassful...after that, every time you walk past a bottle just have a swig. I am nearly 69yrs old, and have been using these products for over 40yrs in the above manner, and it is very rare that I ever get caught by the flu or other similar illnesses. The only thing I can put it down to is the small amount of quinine content in both of these products (in Australia, anyhow). 25yrs ago I told a doctor about this, and he tried it for himself. He was that impressed that not only did he try it for himself, with same results as me, but he now advises his patients to try it. I hope this helps you. Cheers for now...Trev, from QLD, Australia.
Much respect. My father who started as mechanic in the 1950's, hated electrics with a passion, when there were only a few wires and the most complex part fitted was either the voltage regulator or the dynamo. I'll get him to watch this with me soon and I'll add what his reaction is.
Iam With Your Dad Give Me Flathead Ford
Wow, Wes, just WOW! Man you are incredible. 🤟
Hang in there Wes, don't let it kick your ass. It's bound to happen from time to time.
Keep the videos coming.
You are smart enough to know that each problem must be looked out from all angles and then the proper problems be dealt with. You sir do not load a parts cannon, fire it, charge a ton of money and ship it. No your integrity and humbleness to search for answers from others is loud and clear. This is why people trust you and respect you. Thank you for the lessons in fixing things and the lessons in honesty and integrity. We appreciate you. And your respect and acknowledgment to everyone who helped you is exactly what I am talking about. Have a great Easter.
Wes, your dedication to this repair is incredible. Don't ever give up, there is always some logic behind the problems!
Props to you for having great patience and restraint to not deploy the parts cannon on that truck. So many people immediately fire the cannon at issues like this and say it's "fixed". Only to end up with the same problem down the road.
im so incredibly grateful for posting these hard diags, i get the knowledge without the night mare. if i ever stumble into you, i owe you a beer wes!
Gotta love it when the invoice reads parts 5$, labor $500. Just got through a simple brake job that turned into a whole front end rebuild.
Great job Wes. Like the old man said in the movie "Little Big Man", You must endeavor to persevere. That is what you did.
Actually Chief Dan George said that same line to Clint Eastwood in the movile "Outlaw Josey Wales"
FWIT.
That was pretty awesome to watch Wes. I compliment your dedication and I’m impressed.
Am enjoying this channel immensely. You and Eric O are my favorites to watch and enjoy. I do enjoy others, but personalities and sense of humor really add to the experience. thank you for sharing your time Wes.
Wow, thank you!
Incredible detective work Wes. Moisture makes the most sense because after the moisture evaps due to heat the problem would go away and explains the intermittent issue.
With everything I've seen you do, you're more than fair on the pricing. Anybody that would do these crazy difficult jobs for less isn't likely to do a very good job. The dealer or a shop with an aloof attitude would have charged thousands and thrown a bunch of un-necessary parts at it. And it still might no be fixed. You do thorough work and when it's done, it's done right.
Man you are good! that was very interesting..Humidity does weird things, I had Fax machine years ago that would 'ding' the outside phone bell whenever it rained or was foggy..turns out a spider had got in and died with its legs accross the phone wire terminals and in damp weather dead spider became conductive lmao .. Great chanel Wes.Thanks for sharing your pain with these jobs.
Wes, this is why I'd bring my vehicle to you instead of a dealership or another garage. As someone who repairs equipment and systems for a living, I can completely feel you about intermittent problems. I so appreciate the level of your diagnostic work. Sometimes OCD can be a benefit... speaking from experience here.
Keep up the great work and continue inspiring other MacGyvers like myself.
P.S. I let the commercials play all the way through. Helps to make up for some of that time well invested.
WOW!!! FANTASTIC DIAGNOSIS! So many places would have not duplicated the issue, loaded / fired the parts cannon for a new gas pedal and computer, billed the customer $1,000 plus, and the problem would still be there... VERY NICE.
Great job Wes! Incredible problem solving skills.
Love seeing these kinds of videos. Troubleshooting and diagnosis is a skill we share and I love seeing how the pros do it. It gives me ideas for how I can improve my own processes when working on problems.
That was an impressive diag Wes, give yourself a pat on the back for that one. I think your charge for the diag time is more than reasonable if not undercutting your worth a bit but it's easy for us viewers to say that, we're not paying for it. Your repair was probably still far less than what that owner would have paid taking it to a dealership for the parts cannon treatment. I think you're onto something with the moisture causing the short hence why it was only doing it after it sat for a while in the elements and it went away as it warmed up. Either way, great video Wes, thank you for taking us along for the ride!
Mind blowing the things modern vehicles need to operate. I love me some intermittent can bus problems on the heavy equipment. Might spend 2 days trying to replicate a problem and still never have it happen.
Outstanding job, the fact you’re willing to ask for advice shows how good you are. You also asked Eric who I was thinking about when the video was just starting. He thinks he’s not that smart, he’s just plain wrong. 😉 He has such wonderful skills at narrowing things down. You taught us all some new here too. Your price seems plenty fair as you eliminated many parts and extra hours of labor so for the customer it’s a huge win!
Amazing work Wes. You have a real talent. Well done mate.
I watch several channels similar to this one, most of the viewers here probably do also.
This is probably the best diagnosis with a scope video I've seen, ever. There's other great ones, but this one is outstanding.
Thanks. I wasn’t sure how people would react.
I'm certain that if you tired of working for yourself you could make living anywhere with your knowledge and fortitude. I wrenched for twenty years and moved on to a different career when technology passed me by. I'm in awe of your ability !
man, your diagnosis skills amaze me. wow. just, wow.
Your videos are super informative. I did an apprenticeship as a mechanic in the late 70’s, I would be lost trying to diagnose modern vehicle electronics. Keep up the great work, Wes.
I have had a high admiration for your diagnostic skills but I believe this one takes the cake.
Your patience, logic, fault finding and electronic talents are amazing
wooow... i wish my mechanics were even able to hook up a lab scope in addition to a OBD interface... huge respect
I love these scope/extremely difficult electrical videos. I’ll admit, electrical problems are not my forte, and I’ve given up on a few of them. Great job as always. You fix some nearly impossible problems.
Diagnosis is always the most difficult part . I admired your persistence .. Most people can repair a damaged wire but having the skill and knowledge to find the problem is something else .. Well done Wes . Another great video .. !!!
I'm not surprised that Eric at South Main Auto had 2 cents to add to the solution... He is a beast with a scan tool and wiring diagrams, along with a super logical mind to figure out weird problems! It is always great to see two of the channels I follow and enjoy cooperate with each other! Even if one of them is Mortske!
That was impressive detective work. Great job.
Wes, you are God damn BRILLIANT! I hope I will eventually be even a fraction of the diagnostic genius that you are, but I’m not sure I’ll ever be that good!
I think I like watching your diagnostic videos slightly better than your wrenching videos. It helps me learn how to better diagnose and fix my own stuff. It also gives me the confidence to tackle my own projects, the knowledge to consult those with more experience before tackling a project, and the wisdom to recognize when the project is over my head and I should take it to the professionals. I also like your teaching style. The way you break it down, and the occasional snarky remarks, makes it fun. It's kinda like being in Shop Class, but the teacher makes it feel like it's not Shop Class if that makes sense.
From a health standpoint, check out Dr. Bryan Adris - I've been following his philosophy for 2 years now and at 69 with heart problems, and diabetes, I feel great. I enjoy watching your analyses of problematic vehicles - particularly with the newer computer driven crap. Keep up the good work Wes!
Dear wess you absolutely kick ass!! Your troubleshooting skills are on a whole another level that I've never seen myself. As always another great video by The Almighty diagnostic King.
Hey Wes, love the variety of your content. i dont ind the more technical "looking at computer screen" type of videos
Not to mention your sketches and hand drawn schematics are top shelf even though a bit "SKETCHY" lol keep it coming!!!
With all the screens you had to monitor, it almost seemed like the Ram was in the ICU. You brought it back to life!
Very nice job Wes. Electrical diag can be time consuming and frustrating but when you find the problem its SOOO satisfying.
The NAG1 transmission in my Jeep was going into limp mode whenever the Jeep got moist. I eventually had to test all of the wires in the harness and run an overlay between the TCM & Transmission. It was a frustrating but rewarding fix...still works 5 years later. It takes about 15 minutes to reset the codes and took a month to sort it out so lots of time sitting on the side of the road doing resets.
Shoulda bought a stick
Wow man. Impressive diagnostic skills. I need to get me one of those scan tools.
I need to get one of these mechanics!
You mean $can Tools.
U have to learn how to use the scan tool will take a long time if not working with the scan every day
But in this case it was the digital storage scope that was the key...
The master of junk repair fixes the problem again. Wes you are like pit bull, you just don't give up. Its refreshing to see this type of repair skills still exist.
This is my favorite type of vid, Wes. Troubleshooting, diagrams, O'scopes, waveforms and math. Plus no over reliance on fast forward and music, This what make SMA, PHD and you great.
Good info on the redundant systems for pedal, nice find on the chaffed wires. Another truck out the door!
I admire your determination, patience and knowledge; I would've given up on that days ago. keep up the great vids. Thanks!.
Your diagnostic ability is awesome. Another thing you accomplished on this one was to have the sound and your lip movement get way out of sync for the last few minutes. Awesome!!! 😃 UPDATE; I just went back and viewed that part again and now it is correct. Musta been my own donkey power provider.
What really blows my mind all the time is that people think of you as a mechanic, and don't really know what an incredible machinist you are. Ive been following your PM ramblings since before the UA-cam days (I'm hardly on PM any more). Keep up the good work Wes.