FORD TRUCK NO ACCELERATION / STALLS / WRENCH LIGHT P0600 DIAGNOSIS & FIX
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- Опубліковано 18 тра 2021
- 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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Due to factors beyond the control of Advanced Level Auto, I cannot guarantee against improper use or unauthorized modifications of this information. Advanced Level Auto assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Advanced Level Auto recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Advanced Level Auto, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Advanced Level Auto. - Авто та транспорт
Most repairs are easy, correct diagnosis is the real skill.
Most definitely
3 minutes in and I’m guessing pcm. I’m not a real mechanic but that seems obvious
Thats the best part. I love when theres a bad grounds. Those always create fun issues.
Agree
The previous mechanics thought they had a correct diag also.
This guy is way more skilled than the mechanics in my area. Way to go dude, your a master
This guy is more skilled than most mechanics everywhere. He doesn't change parts. He tests don't guess. What I like is he always shows you the end result fixed or not.
I really like your straight forward and honest approach! It's humble guys like you that make it pleasant and informative to watch.
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.
@@denniswhite3487 he really is. Keep on keeping on buddy and don't strangle any engineers. Apparently that's illegal
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!
This guy is the Dr. House of automotive diagnosis. Nice job!
Well done. It’s nice to see a technician doing their craft and not just being a parts changer.
Real sharp
Finally someone that actually knows his sh-t about diagnostics. Excellent work ALA! Great UA-cam vid!
Wonder if he talks like that everywhere he goes?
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
The 58 dislikes gotta be from the guys who couldn’t fix it and are jealous of this guy who did. very educational video even if it was a FORD👎
There's got to be at least 58+x dealerships online..... :)
Fords have been great to me. Owned an 01 dodge bought new, big piece of crap. Put a lot of money into it and only had 65k on it 8 years later when I traded it for my 09 FORD SUPER DUTY. Haven’t touched the engine except 2 sets of plugs, has 129k on it. No leaks, nothing. So let’s talk about the major problems Chevy and dodge have - wiring, electronics, trannies, engine problems etc. Not that Ford doesn’t have their problems, but a lot less than dodge, Chevy and gmc.
@@daveb9370 the ford noe has an electrical problem
@@daveb9370 I'm sure truer words have been spoken elsewhere, but not here. You are correct sir! Lots of people don't want to hear it but it's true. FWIW, I own a 1998 Silverado.
Haters are going to hate. One problem can give you many faults. I had 3 faults, changed the fuel cap (always start with the cheapest part), some valve under the hood…still had problems….one day I filled my fuel tank to the top, and fuel was gushing from the top of the tank. I stuck my head under there and squirrels were having a nut party on my fuel tank and chewed through a line…… replaced the fuel tank, all codes gone. I was a mechanic in the Army, pretty much a parts changer at the lowest level. You are definitely on an Advanced level. Hats off to you. I can’t get myself to buy a Ford. My neighbor has a Raptor, (you know how much that is) it’s been in the shop more than it’s been in his driveway. Great video, as always.
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.
You went above and beyond in fixing the problem .
You're a true mechanic not just a parts chaser.
Eric: *opens wiring diagram*
Me: THE SACRED TEXTS!
Excellent diagnostic and repair! Every time I suspect a bad computer I check for AC ripple in the charging system. Bad diodes in the rectifier will wreak havoc on almost everything digital. Hate to see a $30 diode bridge wipe out a $300+ PCM.
When I bought my first new car I made the dealer throw in a factory service manual as part of the package
Back during the transition to OBD it was priceless
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
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.
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.
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
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.
@@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
Complete honesty here, this is some of the most in depth breakdown of diagnostics I have seen on UA-cam. 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!
Eric, you the man! I know it is just another day at work for you, but we appreciate your knowledge. The world could use way more techs like you! Keep it up.
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!
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!". :-)
Your complaints about parts swappers are valid. One of my friends had an old Volvo (1995, forgot what model it was). Occasionally when it would sit for a few hours, it would crank and not start. Twice his family had it towed to the mechanic that they preferred to take it to. Each time they changed out the fuel pump. On the third time, it happened when he had it parked at my house. I got my multimeter out and found that there was no voltage going to the fuel pump. Just as a precaution I tapped the fuel pump relay a few times. Then it started getting voltage at the fuel pump, and the engine started upon cranking. Replaced the relay and that car ran fine until he sold it a year or two later (was burning a bit of oil so he decided to sell it and get a newer car since he had the means to do so).
But in that case, the parts swapping mechanic got outsmarted, by a college student with a multimeter.
I was very impressed with the way you were able to diagnose and fix this Ford truck.
I love your patience. A lot of guys get totally frustrated and start throwing parts at the problem.......You didn't! Plus as frustrating as the problem was you were cool, calm and methodical. Kudos to you!
It already had parts thrown at it so he could rule those out. lol
Methodical always wins the day.
@@billmonroe8826 True, but sometimes the new parts are just as faulty as old parts. Just sayin'
You have a way of explaining things that makes sense. Clear and to the point and walking us through your troubleshooting and what you are testing and WHY. New sub. Thanks for helping us learn. Don't change.
😎😍😘
There one on bottom at stater on bellhousing and it alluimume I've had a car just like that one it was bad ground
Bright light
Inside left kick panel lh kick
Clogged convertir
With mechanic's like you the future of auto repair in in good hands, great video.
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.
Don't know how I ended up here, but you're a sharp guy. Good work
You Sir are what I call a master Mechanic, you have me wanting to watch more, wow truly impressed.
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!
What a difference a Master Mechanic makes!!! You are awesome and thanks for sharing!
Well done with your thorough analysis before throwing parts at it. You have a very good understanding of systematic procedures.
I've told you this before and I'll say it again, you're one amazing mechanic!!! Thank you for Sharing
This guy has the patience of a Saint. I want him troubleshooting my car if there's a check engine light.
I have lots of patience too when someone is paying me by the hour
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.
@@jms460 yep, that's the difference between diagnostics and swapnostics!
@@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!
Impressive my man, much better job than 95% of most mechanics. You are a diamond in the rough.
36:11 DANG! That new PCM really gave that truck some warp speed capability! Another fine video, Eric!!!!! Keep 'em coming, good sir!
Eric, you are always the right man to fix all the problems. Great job.
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
Really enjoyed watching someone do trouble shooting the right way. One step at a time, build on what you learned from the previous steps and then take it to a logical conclusion.
Great job explaining everything. I am impressed with how well you explained your thought process for troubleshooting. Not many can do that.
That was some awesome troubleshooting. I learned one new thing out of that. Thanks for the video.
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.
Say No to part changers :) I like you. Good troubleshooting thanks great video. This should shame every dealership in North America.
My first thing with that many codes would have been starting to check grounds and wiring harness.
He did that.
@@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.
@@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?
@@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.
@@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!
THANK YOU FOR AN AMAZING THOUGHTS ANALYZES; TOP OF THE LINES, SUPREME STUDY CASE.
Started watching this video right after you put it up but got interrupted and had to stop right before the scan tool spot - today was the first time UA-cam algorithm popped it back up so finally got to finish it
👍👍👍
Incredible skills that no longer exist. You are a real Master.
hey man love the vid thanks for showing the whole diagnosis process helps us all be better mechanics.
I love that there is at least more people like us left in this world, testing it all, taking the time, finding the correct fix. We cant always charge for the time it takes to check these problems, but our credibility precedes us and makes up for it. WELL DONE SIR. From an Advanced Diagnostic Mechanic in South Africa
@Dan H. correct, I t won’t be the last time in your career that you see the same issue and then you’ll be able to save some time.
It sucks not getting paid for every minute but it’s the right thing to do. This customer will be happy now and will return to you, not the parts changers!
Well done buddy! I’m proud of ya
@Dan H. yes this is the right way to learn and same thing in telaphone system. But over in time it will pay off.
@Dan H. I had the same thought Dan. You very seldom see mechanics that do that anymore and folks nowadays don’t understand just how critical a ground is! It’s not only the difference between any electrical device working but also the difference between life and death!
It’s so common for a bad ground to be the sole problem in an automotive electrical problem and everyone seems to jump right over but many times it’s just a matter of finding the ground, taking it loose from the body/frame, cleaning it and reattaching it and bingo, the lights work again! But seems too many have the attitude that grounds just don’t pay as well as replacing a couple of the high dollar parts instead of just starting with the easy and cheap ground wire first. If that’s the issue then your eventually gonna have to deal with it anyways, lol
Keep up the good work Dan! We need good electricians out there like yourself to go with the good mechanics like we have in the video!
Take care buddy and be safe out there!!
@@1982MCI don, I take it that you believe he actually properly tested those grounds (which he did NOT). Close, but no cigar. What did he do wrong???
@@mrobvious5892 that’s a good question mr obvious and to be honest, I will have to go back and rewatch cause I listened to the video and did not watch. I was out in the field planting crops at the time and will put certain videos on to listen to while I’m getting my chores done so maybe I spoke a bit too soon but it still doesn’t change the fact that he still in my opinion used the right troubleshooting procedure of checking grounds instead of skipping and wAiting till after checking everything else if at all. But I’ll go back and look when I have time but I appreciate you letting me know buddy and I’m sorry if I spoke to soon, I’m not perfect either
Take care and be safe out there
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
Man you are wonderful at diagnosing problems and you're a great technician job well done 👏 hard to find techs like you
KISS, it's a state of mind as well as a methodology. Thanks for the content!!
One of the best tutorial videos I have seen, well done my friend!!!
While watching this video about mid way through, with the multitude of random codes pointed to a bad pcm early on. Checking grounds confirmed it. Great job!
You did an awesome job. A lot of mechanics don't know this stuff. I don't! I've been a mechanic for 24 years. However being hourly, they never give me diags like this. I truly applaud you diag skills!
Great methodology, impressive diag as usual. 10/10.
Smart approach - Thanks for sharing knowledge and approach, as usual.
One of the most informative videos on proper troubleshooting. 👌
I like your methodical nature and that you verify rather than assume what the problem is.
I will admit you are blessed with such great knowledge.
Always auto like your stuff. You are a person with great skills.
What made me feel good about this video is that we had the same exact thoughts to troubleshooting this one. If I see electrical tape I usually remove all that first to see if manmade faults are found , majority of problems I find have more problems added from other attempted repairs. My pet peeve is finding wires cut and twisted back together to check a circuit then taped up unsoldered without shrink tubing. Really good video my friend!
Real tech using common sense and keeping it simple.well done and thanks!
Very well done your a true professional
Eric very through troubleshooting video. Thanks for sharing all of your knowledge and information. Nice find. Stay safe and well Artie 😊
This guy should teach a diagnostic course very good attitude and lots of patience 👍 😉
As a pcb component repair tech, I always love to splash some Deoxit on any connectors that are out in the elements. That stuff is like liquid gold and helps keep connectors from ever getting crusty.
this is big brain master trouble shooter. i want to work with this guy and learn.
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.
These are my favorite types of cars to work on. I love getting ones that no one else could fix. They're fun, pain in the ass but truly fun
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. 😎
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.
WOW, real diagnosis, not remove and replace mechanic. Many need to learn from you. Like ground, simple check but very important..
A very thorough diagnosis of a bastard of a problem. Nicely done sir!
Nice job! I don't blame you for being a little nervous. I imagine that computer isn't cheap.
Great video! Had my bets on rodent damage at the beginning, that was just way too many DTCs.
Yes, those little critters can cause thousands of dollars in damages by eating the tasty insulation off the wires and pooping all over them!
Great job applying logic and Common Sense to the diagnostic process. Fault codes seem to often be misinterpreted as identification markers for which parts need to be replaced and nothing can be farther from the truth. The first step in successful diagnosis is correctly understanding the description of each individual code and what actually needs to take place in order to throw that particular code. In this particular case, it was in fact a bad part the PCM itself but we didn't see a code telling us to replace the PCM. So true is the difference between a parts changer and a real mechanic. Another term for changing parts that I once heard years ago is Chasing Ghosts. When I learned the meaning of that term years ago it was like an epiphany for me and I learned to see Automotive Diagnostics in a whole new light. Thanks for sharing your expertise
Good mechanics are extremely rare these days. Good job sir!
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.
That PCM makes it Go FAST! Lol Great video Bud!
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! 👏👏
Good clear diagnosis. Brilliant work
The head scratchers are definitely the best videos.... They have SUSPENSE!
I took off my carburetor just to give it a hug.
" I LOVE YOU MAN " !
T.S. RACING
Brag, be that way! Lol. So wish we were back in those days!
@@birdlady2725 god damn - your comment wins the award for the worst English ever
You did a great job because u took your time with the diagnosis instead of throwing parts at it.
Very thorough mechanic. I wish he could have diagnosed my Ford before I gave up on it.
well done young man, well done indeed!!!!
Usually on Fords when you have multiple O2 heater codes, that usually indicates the PCM has an internal issue. I've seen those heaters short on the sensors, and it burns out the drivers. It's a fused circuit, but rarely does the fuse blow 🤷♂️
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.
Very impressive. The diagnostic ability is worth money!
Everyone: most mechanics will just throw parts at it
Me: No part changers will throw parts at it .. a real mechanic will diagnose the issue.
Know the difference!!!
We call the guys that throw parts at them, "Gas Station mechanics". As opposed to real mechanics, or auto technician's.
I noticed he also called them parts changers
Ground
A mechanic just swaps parts a technician diagnoses the problem
@@bobthompson4319 a technician changes oil and checks tire pressure
Lol every maduel I have called I was never completely confident just do the testing and after the testing well hope for the best
Retired industrial electrician here - troubleshooting industrial machinery and troubleshooting newer cars are very similar. So are the people who work on them. You have your parts changers, and you have your actual diagnostic technicians. I'm proud to say I was the latter. When I determined what needed to be changed, I was highly confident that changing it would fix the problem, because I eliminated all other possibilities, or I could physically see the problem, or I could verify what was wrong with a meter, for example. You are obviously the type that avoids throwing parts at a problem, and that's to your credit.
Awww, the days of carburetors and three speed transmissions.
Amen brother
Don’t forget taking two speed powerglide‘s to 70 mph in first gear😁
This things have more $#it than a space shutle 🤣🚀
Like the ways you did everything by the book
This was awesome I feel like I can fix anything now. Thanks for doing this detailed diagnosis
Great diagnostic work you saved your customer a bunch of money and grief.
Thanks for sharing this adventure with us! really enjoyed the careful diagnostics!
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.
Fantastic work sir, excellent step by step diagnosis procedure
This is a real technician - well done
Good vid though man, you got the skills to pay the bills
i love love love the steps you took to diagnose the electrical delivery system to the PCM, its the same type of stuff i would of done if i was in this situation prior to getting a new computer for it.