FORD TRUCK NO ACCELERATION / STALLS / WRENCH LIGHT P0600 DIAGNOSIS & FIX

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In today's video we take a look at a 2008 Ford F250 super duty with a 5.4l V8 engine. The customer complaint is that while driving the truck will go into limp home mode and the gas pedal will not respond when stepping on it. The engine does not accelerate and will not go faster that 20mph. The other problem is that the engine will sometimes stall and die randomly. The owner has already had three different mechanics look at it and has already spent over a thousand dollars replacing unnecessary parts such as the fuel pump, throttle body, accelerator pedal sensors and still has yet to fix the problem. With the check engine and the wrench light on, we started by checking for trouble codes. That is when we found that the truck had multiple codes for various different sensors and components. We suspect a bad PCM or engine control module, but we need to do some pinpoint testing and troubleshooting to find out. Follow along as I show you my thought process while I diagnose and fix this vehicle.
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Опубликовано:

28 сен 2024

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Комментарии : 1,9 тыс.

@radiotests 3 года назад

I really like your straight forward and honest approach! It's humble guys like you that make it pleasant and informative to watch.

@radiotests 3 года назад

You have a great solid common sense approach! I was a serious technician in the Navy and the number one fault of almost all electrical was always bad connections. I completely understand your hesitant diagnosis! Great job!

@markraven7316 3 года назад

Most repairs are easy, correct diagnosis is the real skill.

@Mr.Phoreskin 3 года назад

Most definitely

@gorehammer1 3 года назад

3 minutes in and I’m guessing pcm. I’m not a real mechanic but that seems obvious

@bradfader691 3 года назад

Thats the best part. I love when theres a bad grounds. Those always create fun issues.

@ralphalvarado6155 3 года назад

Agree

@turboflush 3 года назад

The previous mechanics thought they had a correct diag also.

@psychomonkeyinc 3 года назад

I own a mechanic shop. This video shows their are still some actual mechanics out there. Way to go man. How not to be a parts changer shown perfectly.

@psychomonkeyinc Год назад

@@denniswhite3487 he really is. Keep on keeping on buddy and don't strangle any engineers. Apparently that's illegal

@johnjohannemann1220 3 года назад

Well done. It’s nice to see a technician doing their craft and not just being a parts changer.

@sockpuppetmakesmesick8570 2 года назад

Real sharp

@Seriouslydave 3 года назад

Dude thank you, taught me a lot. I gotta say the drama at the pats system made this video even better, you are an honest dude, you could have edited that whole segment to look different and give the same info, but you even showed your whole process, appreciate that, Subscribed.

@ronprice7495 3 года назад

My experience whenever you see a massive amount of engine codes it is most likely a problem with the pcm or in the main harness. Also seen faulty batteries and charging systems do funny things similar. I remember one year we had a super cold stretch in winter. I live near buffalo ny. But it was colder than normal. It was well below zero every night for a week. Had quite a few cars towed in that would not start. Batteries were replaced and still nothing. These were all old rotted junkers... ( only kinda cars we work on around here).. And for whatever reason the extreme cold was resetting the pcm's. Some got reflashed and were fine. Couple others needed replaced all together. Customers were very upset that there $800 car cost them so much to get back on the road. Take it from me fellas... Dont come up north to be a mechanic! Haha. My biggest used tool was the oxy acetylene torch... Haha

@thh420 3 года назад

we had a few fords of the same era that did this. it was the security system 3/5 times. they all had PCMs that were fried, but the security system was fried on top of that and made it even more expensive. $700 car, with a $1900 fix.

@patricknesbitt4003 3 года назад

Most likely the surface mount electrolytic capacitors in the PCM are dried out from age. Their capacity goes down and the ESR goes up from age and the colder they are the worse they work. They essentially have 2 functions one which is to pass signals and block DC from one part of a circuit to another. The other is to function as a bypass to ground to eliminate unwanted signals. Weak or failing capacitors may work in mild to cold temps but when the temp drops below a certain point they die and basically knock out the circuit.

@robmax1199 3 года назад

I’m not a mechanic, but my f150 harness cut in top of the tranny and firewall. Just like you said all the fault codes displayed. My mechanic charged me to take to the tranny out and found a cracked main harness. it was the open power line damaged to pcm and tranny. cost was about $400 to remove tranny and repair cable. 2001 f150 supercrew 4.6l

@ronprice7495 3 года назад

When you see like 10-20 codes for all sorts of random systems there really are only so many possibilities. If systems that really have little or nothing to do with each other are all freaking out its either the vehicle has been severely neglected for years. Things kept breaking and not being fixed ( which in ny state isnt possible because we have a yearly inspection that requires no check engine light being on). Or you go to what does tie all the systems together. Which is the pcm, tcm... And main power and ground circuits. Honestly sometimes having a ton of codes is easier to diagnose the problem that 1 or 2. I have seen alot of obvious things. Like a mouse nest ontop a pcm. Or chewed through wires. Or chafed wires. This is why common sense and a good visual inspection can put you miles ahead. Guys who get too complicated in their thinking can miss very obvious easy stuff. Honestly i think thats how the stereotype of mechanics not being very smart guys came about. Because its possible( more so years ago) for a not so intelligent man to be a great mechanic. They use common sense and repeat patterns they have seen to just keep it simple. And in alot of cases the issue is very simple.

@robmax1199 3 года назад

@@ronprice7495 Spot on point Im glad I have an experienced mechanic. He knew right away what the problem was by the list of codes and the sudden deceleration i experienced. It was very scary going 70mph on the highway and the truck shifted to 2nd gear in an instant. Nearly skidded off the highway. i would recommend anyone with any older truck with miles on it. Have the main harness inspected. good stuff here much to learn. FYI my 2001 f150 300k miles running strong pass smog in CA ill drive until I can’t

@averyfoss6856 3 года назад

Complete honesty here, this is some of the most in depth breakdown of diagnostics I have seen on RU-vid. I watch these for no reason but to become better in the industry, thank you sir for putting out some quality content. Job well done sir!

@AKJeeper 3 года назад

Awesome job! I worked on a Jeep recently that had been through several shops before it came to me. Similar story - lots of parts changed, including the PCM, but the vehicle still wouldn't start or stay running reliably. I did all of the same checks you did, except in my case I found the PCM connector FULL of dielectric grease (ugh!). After cleaning out all that gunk, I found that pin fitment was extremely poor - almost all of the pins were spread open...likely from the weatherproof connector being filled with that grease and the grease not having anywhere to go when the connection was made. After fixing the pin fitment issue, the vehicle started up and ran perfectly. Even some other random issues the Jeep had went away!

@nickseguine393 3 года назад

Finally someone that actually knows his sh-t about diagnostics. Excellent work ALA! Great RU-vid vid!

@michaelszczys8316 3 года назад

Wonder if he talks like that everywhere he goes?

@beardednomadvanlife6363 2 года назад

I wish I could find a mechanic like this guy in my area so I could trust letting a mechanic work on my van home but for now I play my own parts changer after extensive research

@jum5238 3 года назад

Outstanding diagnosis, and very through (checking pin fitment as well). Somewhere out there are a few parts changers who are bowing in obeisance "We're not worthy!". :-)

@BitwiseMobile 2 года назад

A master mechanic here folks. You actually troubleshoot. As an AT I was trained in the Navy how to troubleshoot and your techniques are exactly how I was taught. I remember my final exam in AFTA (Advanced First Term Avionics - an advanced course in Avionics) consisted of about 8 different faults, but it ended up being a single module that was causing the other faults. Very similar to your experience here.

@ube2slow 2 года назад

Impressive my man, much better job than 95% of most mechanics. You are a diamond in the rough.

@nisiunavoce1264 3 года назад

How refreshing to watch an intelligent diagnostician go through proper troubleshooting. No parts jockeying, just time well spent with a correct conclusion. Good job and an interesting video even for this casual observer. Add me as a new subscriber.

@johnkendall9831 3 года назад

I've told you this before and I'll say it again, you're one amazing mechanic!!! Thank you for Sharing

@tedstantz1185 2 года назад

I’ve only been watching your videos for about a month and have to say your ONE of the best step-by-step guys out there. Pretty nice for an old-school rookie scanner feller. Jobs well done!

@truckingwithcliff 3 года назад

You're a true mechanic not just a parts chaser.

@pbaker7160 3 года назад

This guy has the patience of a Saint. I want him troubleshooting my car if there's a check engine light.

@mrmotofy 3 года назад

I have lots of patience too when someone is paying me by the hour

@jms460 3 года назад

Yes and no. But that’s why you pay them $100 an hour. His equipment, his experience, his patience and his integrity. His integrity is what makes him be absolutely sure he is not just “throwin parts” at it. But that integrity and Being thorough is in his character.

@andyreid7274 3 года назад

@@jms460 yep, that's the difference between diagnostics and swapnostics!

@dalewalker5425 6 месяцев назад

@@jms460 Yes! It's all about Troubleshooting Skills and Critical Thinking/Reasoning.... My 2003 PT Cruiser GT suddenly started bucking and stalling. Would start fine but after a mile or so would stall (seemed to be electrical, but I'm an old, old wrench and haven't actively worked on cars much since the 1990's). After sitting for a minute the process could repeated. After several stalls it ran good for 10 miles on the Freeway. Next day, same story. I had it towed to a "Reputable, Honest shop" where they reportedly pulled a dozen codes and replaced the Cam Location Sensor. When that didn't make any difference, they replaced the ECM, and now the car wouldn't even start!. After $1,600 of "diagnostics" and throwing parts at it, they admitted they couldn't find the problem. They put my original ECM back in my car and turfed it back to me to figure out..... Their shop rate? $195/hour! Oh, and they carelessly cracked the radiator tank by forcing hoses and wires aside instead of removing the turbo air box to provide tons of room to work. Now they want ME to pay an ADDITIONAL $1,700 to REPLACE the newly-broken radiator and hoses!!! My conclusion is that BAD REPUTATIONS are EARNED! And most often PAID FOR BY THE CONSUMER..... This is a sad state of affairs from my POV, and I tip my cap to true Master Mechanics like the author of this video who are honest and skilled enough to actually find and cure the ROOT CAUSE(s) of the problem!

@geraldkoch394 3 года назад

You Sir are what I call a master Mechanic, you have me wanting to watch more, wow truly impressed.

@quevicular 3 года назад

Dude you were very thorough. They could have easily diagnosed this and fix the problem. Before I even knew what was going on I was almost guaranteeing that the PCM was trashed. Excellent video

@christophersine84 3 года назад

Don't know how I ended up here, but you're a sharp guy. Good work

@dave6501 3 года назад

Say No to part changers :) I like you. Good troubleshooting thanks great video. This should shame every dealership in North America.

@MC-xf5fy 3 месяца назад

I'm in f@!#$ng awe right now. My 2005 F150 just recently did the limp mode thing and 3 mechanics and 8 parts later it still doesn't work. Where are the mechanics like this guy? Much respect to this guy. Salute! 👏👏

@archerg4608 3 года назад

One of the best tutorial videos I have seen, well done my friend!!!

@bobbydelamar606 3 года назад

This guy is a technician not a parts changer. Great diagnosis. Im a mechanic and at my job were mostly parts changers. Ive been trying to up my diag. abilities. I've heard test lights are not good unless you have the new ones with the circuit board that are safe for computer circuits.

@holzwurm_hd7029 3 года назад

A friend of mine has the same problem. Only that he had installed a new radio and damaged the cable going to the ignition switch.

@windward2818 11 месяцев назад

I have to applaud your technique of doing a quick visual inspection during the beginning stages of the diagnostic. I too do this. I am actually making up a new set of ramps and pedestals so I can drive (or wench) the vehicle on the ramps to slightly raise it 22 inches high, which is high enough to do a visual inspection (and most simple work like electrical repair) below the vehicle on a low profile creeper. After the diagnostic and the repair estimate issued to the customer, I can then either leave it on the ramps or move it to a post lift depending on what's wrong. I have had several ramp designs previously and most aftermarket models need some improvements in order to be reliable and have the features I want. I think ramps are underrated by the majority of mechanics, but I find them very functional and quick when doing diagnostics. Ramps don't have any moving parts, so there is nothing to fail in terms of wear. The firewall and fender ground need to be cleaned. The bolts usually clean up with a wire wheel but they will just rust again. A better solution is to replace them with a high strength stainless steel flange bolt (serrated flange bolts are also available). The eyelets need to be cleaned and the sheet metal cleaned (you can use an aircraft grounding (bonding) tool called an OSBORN PILOT BONDING END BRUSH, to clean the sheet metal, they come in several different sizes). The battery negative is wrapped with electrical tape and should be inspected. You may have to install a new battery lug if so you should just replace the chassis ground wire from the battery (it looks like an 8AWG wire). It is best to test a dedicated ground or power at its nominal high operating current and then measure voltage drop. You test light is not a large enough load to test large power grounds or feeds. I prefer to do voltage drop test with higher currents. The firewall grounds next to the PCM on the left are a little goofy. Why not just expend the wires and attach them to the chassis ground bolt directly from the battery at the fender? If somebody knows why they have to be at the firewall please tell me. But, as far as I can tell it is done this way to expedite vehicle assembly. For the PCM there is only really one main microcontroller used for both the engine and transmission control, and also why it is given by Ford the name Powertrain Control Module. Usually if you have separate processors for engine and transmission, we use the names ECM and TCM, rather than PCM. So, what killed the original PCM?

@scroberts9316 3 года назад

My 1st thought was a bad ground. Then maybe a computer power supply problem. After those checked out, that's when I got real nervous, lol. Great diagnosis and repair.

@jerrygeorge3604 3 года назад

Wow, I was right! My previous comment about the PCM being bad was made at the beginning of the video. The watched it all the way through to see the result. 😎

@meabob 3 года назад

When seeing similar symptoms on any modern vehicle, I check the battery cables first. With all the added electrical loads, most vehicles today don't play nice with loose battery connections or even weak batteries on many of them. A couple years ago, we had a brand new Buick Enclave come in on the hook, right at closing time, too. The RO said it had died at a stop light and wouldn't restart. Of course it started right up when I got in it. The next morning I checked it over and found the battery ground cable so loose, I don't know how the starter was able to even crank. The car only had 600 miles on it. The customer comes in for her oil changes and rotates without any issues since. She says she loves it. Go figure, I would have been scared of it if it died on me a week after I bought it.

@billg4630 2 года назад

I'm new to this channel and have been working on cars and anything with a motor since I was 12...started on lawn equip...love your channel

@ChadtheDad23 3 года назад

36:10 Legit thought for a second you were going like 150mph haha The flow of the video has been getting awesome, no low point

@jdelatorUIUC 3 года назад

He was test driving the new F150 Lightning

@dieseldan9686 3 года назад

Very thorough mechanic. I wish he could have diagnosed my Ford before I gave up on it.

@mattfarahsmillionmilelexus 3 года назад

Great methodology, impressive diag as usual. 10/10.

@talkingtrashtom 3 года назад

WOW, real diagnosis, not remove and replace mechanic. Many need to learn from you. Like ground, simple check but very important..

@sambitar8448 3 года назад

THANK YOU FOR AN AMAZING THOUGHTS ANALYZES; TOP OF THE LINES, SUPREME STUDY CASE.

@elianbarajas2869 Год назад

You’re on par with scanner scanner and PHAD. I appreciate you dumbing it down for us that don’t understand wiring diagrams. 👍

@Thunderroad8517 3 года назад

Great job sir. I think that the test light to check grounds isn’t a good way to test because it’s not a loaded circuit. Be careful that will get you but you probably already know that. Cheers.

@Kieva_Storm 3 года назад

Hey, preface to this statement, I'm a GM Certified, ASE Master Tech. GM actually wants us to test their ground circuits by doing voltage drop with a test light and multimeter, because you cannot 'just' ohm a ground circuit. If it has chafing, maybe half of the wire is corroded, but a few strands of copper are hanging on, it'll ohm good, because the meter sends a few mV's through the connector - the test light replaces a load, so it won't damage a fused circuit, and it's low impedance and won't damage anything by drawing too many amps. Also for what it's worth, it's generally not the best practice to backprobe a weather-sealed connector, as it damages the seal. It's better to jump the connector from the front, to the destination, and then test it.

@mikeshuck2760 3 года назад

Retired Chrysler/Dodge tech. I had a brake lamp bulb rigged up for testing, would load the circuit. Bulb would be dim if too much resistance.

@billschafer4147 Год назад

Impressive! Great troubleshooting and repair....without doing all the needless parts swapping, seems like a lost art. 👍

@TigerStrike8000 3 года назад

Great job explaining everything. I am impressed with how well you explained your thought process for troubleshooting. Not many can do that.

@yellowboy52 3 года назад

nicely done totally correct to satisfy a frustrated customer that has been charged many of dollars just to break down again for same problem Greg you are right we all are a dying breed I myself have been in automotive 25 years and have had my share of diagnosing a problem vehicle... anyways great job on going the extra mile I can feel that customers relieve and happiness as he is driving around great mechanics are overlooked most of the time ...

@anthonyblalock6138 3 года назад

My girlfriend and I recently replaced her ECM in her 06 Cadillac CTS. I saw all your fault codes and immediately said “it’s the ECU..” after you Replaced it and it didn’t start my GF said “he didn’t do the security reset! Lol bro, you just needed us with you on that one hahah!!

@marvinsauer8493 3 года назад

When I see that many trouble codes, start checking ground bonds. I suspect a ground is causing it to throw so many codes. Run grounds, clean them and try it again.

@TheJefferson 3 года назад

Id think this or a harness/connector is having issues 5min into video so far

@diavalus 3 года назад

Not only ground but also low voltage on the ECU. Usually it's good to check both when running into such an issue.

@onebadg8 3 года назад

except the rebuilt pcm is using the same grounds and connectors. try again.

@mary8273 3 года назад

@@diavalus I agree

@gt500knights 3 года назад

Bad grounds can definitely cause issues like this, but i have seen too many times that a loose battery connection has created these problems.

@jl8853 3 года назад

This is a great channel. I work in a shop and dont have any formal training. Im a young guy and this is helping me get better at my job. Thank you.

@1stormseekr336 3 года назад

buddy of mine had a 2005 with problems like this, dealer replaced the engine wiring harness, pcm twice, pedal, etc.. $7500 in cost and 6 months (to used car dealer). lol and it was what i told him the very 1st day he had problems....the ignition system in the steering wheel...seems like years of people grabbing the steering wheel and pulling them selves up into truck wore it out.

@JoshuasRecordings 3 года назад

Same thing happens with C4 Corvettes. The ignition switch pole will come dislocated because of movement in the steering wheel from ppl using the wheel to support them. Kinda sucks.

@marktime48 3 года назад

That many codes, my first thought was the computer. I'm curious about the cause of failure, though. If the wiring was good, it's not impossible for computers to spontaneously corrupt, but I wouldn't expect it to be common. I wonder if someone was messing with trying to tune it with a piggyback considering the amount of tape on the wiring. Good job using proper troubleshooting techniques, as well as explaining them! Too many shops and technicians don't bother with using schematics and critical thinking. A+ job, bud!

@t.s.racing 3 года назад

I took off my carburetor just to give it a hug. " I LOVE YOU MAN " ! T.S. RACING

@birdlady2725 3 года назад

Brag, be that way! Lol. So wish we were back in those days!

@20somthingrealestate 3 года назад

@@birdlady2725 god damn - your comment wins the award for the worst English ever

@GOON135 3 года назад

Thorough diag! I cringe at the thought of replacing control modules myself... whenever I get calls being the third, fourth, fifth mechanic and hearing "the last mechanic replaced the computer" I think, "here we go". But I still start from square one regardless because most don't follow the simple steps first... power and ground is the culprit a lot of times. I enjoyed watching this from beginning to end.

@littleman350 3 года назад

My first thing with that many codes would have been starting to check grounds and wiring harness.

@birdlady2725 3 года назад

He did that.

@littleman350 3 года назад

@@birdlady2725 I know but he also asked people to say what they would do close to the beginning of the vid which is when I commented. As he said many people are just parts swappers and things such as this are a parts swappers worst nightmare. My main thing used to electrical troubleshooting and repair.

@birdlady2725 3 года назад

@@littleman350 Sorry I missed that part. I used to repair, test and calibrate medical equipment. Used meters, oscilloscopes and many specialized pieces of test equipment. So I get what you said, and you were spot on. Sorry for my confusion. I don't do any vehicle stuff, but I understand concepts and the process and enjoy learning stuff. What kinds of equipment do you work on?

@littleman350 3 года назад

@@birdlady2725 I used to work on literally everything. I work for a shop that did roadside and everything from cars to heavy equipment. Nothing rewiring an 18 wheeler on the side of the road at 3am cause the police won't let him move till he is fixed or towed.

@birdlady2725 3 года назад

@@littleman350 I used to do paving - tri axle dumps and otr for P rime. You, are a brave soul doing that kind of work! Terrifying working roadside!!! Kudos to all who do recovery/repairs or road construction etc. Fortunately only broke down once - radiator blew out - recall thing not addressed on FLiner. Had to override auto shut down to hobble to truck stop thankfully not far away, so easy tow situation for tt driver. Be Safe out there!

@shanejones58 Год назад

I sure wish you lived around me man what a jam-up job you do. Very insightful on how you do it, really wish I could get you to work on my truck. Anyways there's your vote of confidence from this person and I appreciate it man.

@cliffordgallagher4531 3 года назад

That PCM makes it Go FAST! Lol Great video Bud!

@midwest4416 3 года назад

Enjoy the ride along so much had to subscribe. I've been victim to 2 "part changer" dealer experience that ended poorly. 1. No cost just lost use of the car for 2 months and returned in same shape and 2. was several hundred dollars for an 70% fix but found the defective ($10) part later when doing an engine swap.

@jasoncushman2786 3 года назад

I watch a lot of these shows and it seems like a lot of shops shoot the parts cannon. I couldnt imagine charging someone for not fixing their vehicle. I'd refuse

@12yearssober 3 года назад

Doctors do that all the time and charge a lot more

@topherd1011 3 года назад

@@12yearssober human systems are unpredictable and each body is different. With vehicles, it’s not that complicated. The problem is staring you right in the face.. it’s right in front of you.. there’s no excuse.

@craigh4677 3 года назад

@@topherd1011 Are you a mechanic?

@VinnyMartello 3 года назад

@Topher D I would have to respectfully disagree. While a car is no where near as complicated as a living thing, they can be incredibly stubborn if they are made after 1990. I’ve run into so many ridiculous and frustrating fault codes. Carburetors may be inferior but in terms of keeping something alive for pennies an old carburetor truck can’t be beat. I daily a 66 Chevy so speaking from experience.

@cb-gz1vl 3 года назад

In the military they do that. Reduce the repair to 3 parts then replace those three parts.

@c-moneycantrell 2 года назад

If every tech was like you the world would be a much better place

@lobosolo3215 3 года назад

I will admit you are blessed with such great knowledge.

@wmichaels362 3 года назад

You need to load the power and ground circuits. What you do with that high impermanence test light is test for continuity, not the circuits ability to carry the full load of the circuit.

@arthurfricchione8119 3 года назад

Eric very through troubleshooting video. Thanks for sharing all of your knowledge and information. Nice find. Stay safe and well Artie 😊

@scotthoskins832 3 года назад

You are an exceptional teacher. Alot of people on RU-vid are so irritating cuz they talk too much. A lot of unnecessary blabbering. You get to the point and keep it simple..😉

@boggsloggs 3 года назад

When I first saw the location of the PCM I instantly thought about water intrusion. As a Ford tech I can say there is a TSB about that very thing. May not have been the case here but future reference

@mrmotofy 3 года назад

I think dodge has a PCM on the other side near same location. Apparently very common to fail cuz there's an open hole on back side so it fills with water WTH

@Sheeeeeeeeeeeeiiitt 3 года назад

Is there any preventative measures you mind sharing to help remedy the water intrusion? Any retrofit or aftermarket part to shield the pcm? The left side bolt on my 09 F150’s pcm is completely rusted. I assume it’s partially due to the wiper cowl heat/cold cycles warped and no longer sealing out the water? No telling what it looks like underneath. Thank you for mentioning the tsb and any other feedback you mind sharing. Florida gets a lot of rain.

@mrmotofy 3 года назад

@@Sheeeeeeeeeeeeiiitt Use some aluminum flashing or something to make a shroud to cover it. Screwed to hold it in place

@Sheeeeeeeeeeeeiiitt 3 года назад

@@mrmotofy great idea…And I already have leftover aluminum from installing dryer exhaust. Thank so much for replying.

@mrmotofy 3 года назад

@@Sheeeeeeeeeeeeiiitt hey no problem, I don't have/drive Dodges or Ford...but doesn't mean I can't learn about em and pass on that knowledge help...good luck

@vrx7077 3 года назад

A bad catalytic converter would cause all of those codes also if the guts of the converter break down and travel down the exhaust and eventually start packing up on the first major bend causing major restriction and causing the vehicle to do all of those things. The way ive checked without special tools is disconnect the exhaust if possible before the cats.. preferably right below the manifolds and turn on the vehicle.. it'll be loud as hell but you'll be able to test the truck out to see if converter cloggage was the issue. Great video by the way, its nice to see someone actually doing all steps to diagnose a problem.

@DrHarryT 3 года назад

@15:49 Yes... Back in the 80's they had separate ECM [Engine Control Module] and TCM [Transmission Control Module] modules and later they integrated them into one package called the PCM. [Powertrain Control Module] When I saw you pull the codes at 7 min, I noticed the scanner misinformation referencing a TCM...LOL [Unless it was talking about the module within the main PCM package. Now days it is crazy with so many modules with the BCM [Body Control Module] being the main intersection for all the other modules.

@godisgood789 3 года назад

I worked at a fleet operation with a combination of Chevy and Ford Vans and they all had their unique 3 ring circus 🤹‍♂️ issues. On the older Dodge Ram Van it would be the same scenario you had. The PCM would spit out multiple codes and stall! I ended up diagnosing power and grounds first and would also verify if the torque conveter was locking 👆 up The other would be a backpressure test in the exhaust to rule out a blockage. But in any case it always ended being a PCM. In order to save me timr for the next round - I would keep several PCM 's judt for testing purposes. Hats 🧢 off for you diligent and thorough Diagnosis! It is absolutely Imperative to eliminate any associate causes before replacing the PCM!

@mauricioflores987 3 года назад

I like your work man, just got a job at a dealer ship and every mechanic is like they are the best in the world, and to me that are a parts changers, lol. Thanks for the video, it was educational.

@juanalcantar9781 3 года назад

Lol every maduel I have called I was never completely confident just do the testing and after the testing well hope for the best

@dhellis19498 3 года назад

Once you showed all of the codes my first thought was the control module, was good that you took the extra time to check everything to come to your solution. Throwing parts at a problem is only going to cost the owner money.

@bretfeeney1072 3 года назад

31:12 "This one feels nice and tight not letting me going in all the way". Where do you work and what do you do? you are very sharp.

@jamesfair9751 3 года назад

Even when they stretch out they usually go back pretty tight. After many many many insertions they will loosen up tho.

@halweilbrenner9926 3 года назад

Impressed that you are aware of how important good clean ground points are. Body grounding is important for ignition & block ground for starter motor function.

@philsanchez3007 3 года назад

Bro you are legit! You are a brilliant mechanic!

@robertsmith987 3 года назад

My wife hates when things go into limp mode I tell her it’s her nagging

@RobertStrafford 3 года назад

Lmao

@ttstang43 3 года назад

LMAO... oh man i needed that ...

@brandonswinford7557 3 года назад

😭😭😭🤣🤣😂😂😂😂

@Cheeseburger.Launch.Sequence 3 года назад

But secretly you know it's your age.

@DanielK-tr2ry 3 года назад

My ex girlfriend used to talk crap about my car it was fine with just me and my kids. But if she got in it it would rideike crap till she got out

@samrodian919 3 года назад

A very thorough diagnosis of a bastard of a problem. Nicely done sir!

@nathanguillory4241 3 года назад

Mine did the same thing ended up being the engine wiring harness. After years of wires rubbing together they were shorting out against each other causing everything to go wrkng

@themadmallard 3 года назад

possible vermin nibbles too?

@美優美結実優美夕みゆ 3 года назад

@@themadmallard in my case it was a damn squirrel living under the intake manifold. Little shit chewed through multiple wires and EVAP hoses.

@richiemacc 2 года назад

Good diag for sure. I had a similar problem with a 6.2 that would randomly stall. Also at times it would go to limp mode with p0600 and u0300 stores. Also at times had a p2111, p060a with some lost communication dtc in other modules. Testing led me to replace the pcm. Truck returned with the same problem. Further diag found the #6 coil was intermittently arching on the fuel rail. That arch causes all kinds of random dtc's. After replacing the coil the problem went away. The arch would get so big as it left a white burn mark on the plastic quick connect fitting at the rail. Amazing what rfi and backfeed can do.

@copisetic1104 3 года назад

Awww, the days of carburetors and three speed transmissions.

@hadleymanmusic 3 года назад

Amen brother

@mrobvious5892 3 года назад

Don’t forget taking two speed powerglide‘s to 70 mph in first gear😁

@mr.motormaster9881 3 года назад

This things have more $#it than a space shutle 🤣🚀

@rickleger3528 2 года назад

Great diagnostic work you saved your customer a bunch of money and grief.

@MrBill-xs6bx Год назад

Ya man you made me nervous just watching on that one. Had a 1977 f250 with bad pcm .they were much less complicated then but I'm had the same problems. Would run then shut down. Changed pcm . Plug and play. All new and right again. Really enjoy watching this thank you

@AP-xq3jm 2 года назад

My uncles truck has the exact same problem. It is doing exactly what you describe. Great video.

@FordBossMe 2 года назад

Great job this is not an uncommon thing with these trucks I run into it so many times you definitely diagnosed it like a pro

@emmanuelcastro9827 3 года назад

Like the ways you did everything by the book

@stephenphillips5523 2 года назад

Wow you are a really good mechanic Electrical issues are the scariest ones to deal with inhsd a 93 f 150 that had starting issues rough idle I could smell a dead fish smell luckly I found a utube video talking about my problem it had burnt component in the computer Mine looked exactly like the one in the video solved my problem Took forever to come across that video a mechanic had looked at my truck he told me he thought it would be computer but I chose to fix myself computer wax preprogrammed. Luckly I had no security system to deal with it was plug in a play love your channel

@andrewvillanueva4222 3 года назад

Their are mechanic than their are master mechanic. You are a master mechanic bro.

@orange1soda 3 года назад

Dude great job your a mechanic. I just feel bad for the owner had it at 3 hack shops he needs to warn people about those shops so they dont get ripped off.and call the better business bureau on them. Any hack can toss 5 parts at a car and get lucky. A real mechanic gets to the source. Dude again great job.....

@mrbmp09 3 года назад

Good mechanics are extremely rare these days. Good job sir!

@CK-TD 2 года назад

Thank you. This pretty much confirms my issues on my f150. Dealership threw parts at it and now having to take back.

@b.powell3480 3 года назад

Bad capacitors on the computer circuit board, but they're all sealed up, so probably better to replace the computer!

@dantyler6907 3 года назад

Probably cheaper to replace the vehicle. With a Toyota.

@bababooey7576 3 года назад

@@dantyler6907 Hehehe. Having said that, my heated seats quit working in my 2016 Tacoma 6spd with 49000kms on it. First malfunction of anything and I was surprised it was the seats. (Manual friging rocks).

@oldcarjunky 3 года назад

This was very much needed info.i have a 03 f-250 SD 4X4 I seem to have dropped 2 cylinders .but before this the only code was passenger air bags light I replaced that.now this. I think a in depth reading.is needed. Not the kid at O'Reilly. I have had Tin years of flawless use so I still love the truck.

@n3rdst0rm 3 года назад

One of my old employers had a mechanic that's been one for about 6 years that sold me a snowmobile he couldn't get to work. Saw fuel coming out of the return line so I replaced that as well as a failing ignition coil and the thing works like new. It's scary how easily the smallest things can get missed by "professionals"

@kalanirobb54 3 года назад

Real tech using common sense and keeping it simple.well done and thanks!

@mauricehodgdon1885 3 года назад

Sadly "mechanics" will cuss the make or model without knowing root cause of the issue to "protect" their "integrity."

@tothemaxx1991 3 года назад

I swear at Fords due to their rampant need for specialty tools. If it's a 15mm or a 5/8 on any other vehicle it's a T28 on a Ford

@Dragon90815a 3 года назад

Had the same problem with a 93 explorer. Except the PATS. Good thing I was A computer tech. I should have made a video. Excellent.

@lookoutleo 3 года назад

i loved hitch hiking across the states and canada , got to drive many big automatics like that, we just dont have such big engines here in europe , i woulsd have checked the grounds to same as you but wouldnt have had the diagnostic so would have been lost after that, hope to come over again after covid settles down. thanks for posting

@PastorJack1957 3 года назад

Very impressive. The diagnostic ability is worth money!

@benrhouma2084 2 года назад

This is a real technician - well done

@brandonlp89 3 года назад

Awesome work, a couple of take aways to help you speed up diag and be more thorough. Throw test lights away, use a heavy load like a high beam bulb. Test lights will light with 1 strand of wire holding on. Please invest in a nice set of pin test leads. You were handling them light which was good but putting a round test lead into a spade pin hurts my feelings. Last thing...those internal processing codes are an automatic PCM. 30 second diag. Keep on doing some great work sir. Very informational!

@jimmyhendricks1281 3 года назад

Fantastic work sir, excellent step by step diagnosis procedure

@mohammedcherifi9206 3 года назад

I like your method of problems diagnosing logical uncomplicated simple and easy

@xtra333 3 года назад

This is why i love my old Carbureted ford 4.9

@starlite528 3 года назад

I paused while you're looking at all the codes, and before I read any other comments; My initial assessment was probably a clogged intake or a clogged cat, then you said they replaced the TB and some other stuff so I thought 'maybe a loose/jiggly or bad crank or cam position sensor.' with all these codes, it makes me think it's something like a rat chewed up the wiring harness. I'll continue the video now and see how I did, lol! (I'm not certified in any way nor have I had any professional training but I have rebuilt and replaced an engine and solved issues on my own vehicles here and there)

@starlite528 3 года назад

I hate to see a computer go bad. I wonder how that happens, and how often it happens

@Steve-bo6ht 3 года назад

"Suck Squeeze Bang Blow" it was simple until they started messing with physics.

@deborahchesser7375 3 года назад

That’s the sound of my wallet being emptied for 8 onboard flight computers

@st8ks967 3 года назад

@@deborahchesser7375 I smell a fellow A&P

@9WEAVER9 3 года назад

I think the physics messed with us instead

@craiga7652 3 года назад

Are you talking about mechanics or HOOKERS¿? 😅

@Steve-bo6ht 3 года назад

@@craiga7652 😂

@GlazzedDonut 3 года назад

impressive fix I learned quite a bit here. thank you

@nestorlugo. 3 года назад

Just had a Nissan Maxima with a “bad” alternator. Turns out a pin broke off in the connector due to bad engine mounts. Junkyard trip to de pin a connector and viola

@ranbymonkeys2384 3 года назад

A pin broke off of a connector due to bad engine mounts?

@nestorlugo. 3 года назад

@@ranbymonkeys2384 if I must explain for the inexperienced folk. Bad engine mounts let the engine move excessively within the engine bay. Manufacturers secure harnesses and hoses with rose buds and other fasteners to prevent entanglement or rub thru as the engine rocks during normal driving. With bad mounts the wires pull and stretch out of the normal tolerance causing issues.

@ranbymonkeys2384 3 года назад

805 area code California, well that explains a lot, hahahahaha