A very similar case to the Dodge Neon we just did. https://www.youtube.com/watch?v=Pin9g7rHFPo&t I think you will see the only difference is in this case the 5v ref was still there and functioning. -Enjoy!
If an SMA Video has helped you out please consider giving using "Patreon" to help support us. The videos take real time to create and pull us away from real work that pays our bills. CLICK HERE: https://www.patreon.com/southmainauto
CHECK OUT OUR "SMA SWAG" STORE! Go on Teespring and get your very own SMA merch!
https://teespring.com/stores/the-sma-store
If you don't like Patreon feel free to use the "PayPal Me" link: https://www.paypal.me/SouthMainAuto
The South Main Auto Amazon Store:
https://www.amazon.com/shop/southmainautorepairavoca
AES Wave Automotive Diagnostic Tools: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/Miscellaneous-p9347.html
Thank you for all the continuing support!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express 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 the information contained
If an SMA Video has helped you out please consider giving using "Patreon" to help support us. The videos take real time to create and pull us away from real work that pays our bills. CLICK HERE: https://www.patreon.com/southmainauto
CHECK OUT OUR "SMA SWAG" STORE! Go on Teespring and get your very own SMA merch!
https://teespring.com/stores/the-sma-store
If you don't like Patreon feel free to use the "PayPal Me" link: https://www.paypal.me/SouthMainAuto
The South Main Auto Amazon Store:
https://www.amazon.com/shop/southmainautorepairavoca
AES Wave Automotive Diagnostic Tools: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/Miscellaneous-p9347.html
Thank you for all the continuing support!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express 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 the information contained
Had same problem. turned out all 3 wires to camshaft sensor were bare and shorting together at connector end. new connector, no problems.
Need help having week power to my coil …got a jeep 5.2 v8
I can't tell what wires you are testing in the video where is the close up of what you are doing?
how do you bypass the pcm on a 2002 jeep GC 4.7 Ho
Hey my Jeep Grand Cherokee Laredo 3.7 awd sometimes shacks and sputters like crazy when I try and start it. Wondering if you might have an idea why it may be doing this? Thanks
How do you get the connectors out of the way to be able to back probe the pcm?
I'm working on a 2006 5.7 and its got every light and code in the book when I put KOEO every single relay starts clicking like crazy im lost
My 04 Jeep WJ 4.7 quit.
It was displaying P0340 camshaft position sensor.
So I replaced both the camshaft and crankshaft sensors.
Fuel pump was weak as, you know.
Put a new BOSCH fuel pump great pressure.
No spark still getting the same code P0340.
Looks like will be going to the shop with it.
My little scan tool (Blue Driver) is meh…
The PCM powertrain control module is listed in the possible causes..
Thanks for your time.
Just for fun and excitement going to try wriggling the wires and pull the PCM/ECM open it up for a visual inspection.
i just found a fuse that will do same problems , but start after fuse replaced under dash is on 11 or 12 un marked ,with being hard to locate . but critical to skim , no code blocked out ,same deal.. took 3 weeks to find fault .
If I have all the same symptoms and have verified all the same voltages but can’t test for the PCI a is because I don’t have an oscilloscope would I be pretty safe to say I have a bad PCM also? Thanks
What pins did he check? Thanks for the help anyone!
I have a 2002 WJ with the exact same issue except I am on computer number 5. Did this ever get corrected by another ECM replacement? I have had the same issue where the new ECM would make the car run them it would do the same no start 3 days later. They are no longer warrantying my computers as they say it is another issue or it would never have started the car the first time..
Some if not may years of the Grand Cherokee had bad solder on the ECM boards.
How do we stop the corrosion?
….my new 1995 Grand Cherokee Laredo had an aftermarket remote start/security system installed by the dealership when I bought the vehicle …this system was a continuous problem…..at approximately 100,000 km.the first PCM failed. A rebuilt PCM from Jeep cost me $1400 installed …that PCM failed after 10 months (12month full replacement guarantee)!….when the dealership installed a replacement PCM it failed immediately, so they installed another (4th PCM)…..
I did a lot of internet research and found many Jeep owners had complaints of ‘no start’ or ‘stalling when driving ‘…..all occurring after vehicle reached 60,000 miles….some thought a change in programming of the ‘run’ software by Jeep incompatible with the older PCM was the cause of failure…….an Avionics Engineer dismantled a failed PCM and suggested the problem was caused by screws holding the PCM to it’s base….these screws were too long & made contact with the firewall……after sufficient miles the screw removed the paint from the firewall and grounded the PCM to the frame; giving it a negative charge!..many Jeep owners replaced these screws with shorter ones and found success in keeping the vehicle running….my replacement PCM’s were installed with shorter screws….
…….ten months later all the old problems returned…..stalling….no start…the remote start/ security system had been turned off for many years but the dealership demanded it be removed entirely….I paid to have it removed….the dealer ship replaced ignition switch,starter,& got Jeep running….but I couldn’t trust it….began driving less…then battery kept discharging ….back to dealership to test electrical….found 0.25 amp discharge- 10times the allowable…..the parasitic leakage was traced to fuse powering the instrument panel including the RADIO!!…
why is it ok to use the headlight bulb for testing the power and ground not critisising just want to learn
We are so luck too have Eric o every since his first video I been hooked very detailed videos
You should send that ECM over to Big Clive for "analysis"
Quick and accurate. Thanks Eric, gotta love the south, eh? :>)
Love your videos. One question…is there a reason you don't use fender covers?
To roughly quote you: "He replaced the ECM, it ran for a period of time, and then died again with the same failure…" What better way to encapsulate owning ANY Jeep product made after 1968. Honestly Jeeps are Junk and I still can't believe you bought one for yourself after documenting just how awful they are in many of your videos like this one. They're JUNK designed and poorly assembled by drunken Frat boys under the watchful eye of greedy corporate cost cutters.
Tweaking the connector gives a massive clue. Crack the ECU open and there will likely be bad solder joints everywhere. These ECUs would be from the vintage where lead free solder was just starting to come into vogue but no one knew how to make it less shit yet.
Had a jeep 4.0 the cover screws to long eventually ate in to board. We're to long. Found an aviation mechanic found issue
Every 2001 Chrysler truck product needs an ECM. I've put 6 or 7 in this year all were 2001. Mostly Jeep but a few trucks.
Dang Mr. O'….. You have been having the ECU Blue's lately. lol Great Videos…. as ALWAYS! Thank You Sir.
Grand Cherokee ecms are in a god awful exposed location. Expect to go through a few. Especially if you go off roading
Hey eric , could you please help me what is your program that you use for car wireing diagrams and other goodness ? Thx
Eric why not take covers off the ECM and check for bad solder joints to see if it fixes the problem.
The Chrysler bashing never ceases to amaze me. Even Eric's Hondas have problems. I wonder how many of us live in rust-free climates (our '74 Caddy hasn't a single spot) and haven't the first clue just how awful upstate New York's climate really is on electronics.
Truly enjoy Eric's moonlighting videos. They're always a totally different mood.
Eric you are just to good for the average vehicle, they don’t stand a chance..
Do you know for sure that the other modules making the activity on the com-line and not the pcm? You have to have it unplugged to rule out your pcm is talking to a broken wire…
So basically, the problem is likely cracked solder joints INSIDE the ECM, where the pin headers go into the PCB…Probably potted in epoxy, and difficult to fix "to component level" by resoldering…
What Eric O is not is NOT identifying is the fact that the wiring harness in the WJs are notorious to shorts, Let me go back to 4 yrs. ago when I purchased my WJ for a whopping $500 (couldn't pass that up, the 4×4 worked) my buddy just wanted to get rid of the thing. I looked it over,popped the hood and seen the "Big 4.0" SOLD. Got it fired up after sitting 2+yrs.and heard the familiar "the broken piston skirt slap" Oh Boy, here we go But it's cast iron block and head it's fixable. What I didn't know was the trans was burning up, so I found a reasonable trans and had it installed,little did I know that the sensor in the bell housing was yanked by the shop who installed the trans causing a short in the harness the rested against the firewall.(make sure to check the Y in the harness left of the ECM) to see if it has rubbed through the insulation on the firewall. Yep it shorted my ECM and was told by my local dealer that Chrysler DOES NOT make them any longer and would take 6 months to get one. found a used one reflashed it to my security and keys and it lasted 1 yr. Then all hell broke loose causing the the skim module,cluster and ECM to short out, no com out of anything, After a trip to the dealer with a new skim,cluster,keys and ECM (yes a NEW ECM from Chrysler) was installed she was alive again. With a rebuilt 4.0 and 220,000 (5500 miles on the rebuild) it runs like a new one. What cost me $500 4yrs. ago ended up around $6500 "Buy a Jeep they said"
Very intriguing
It's a Jeep thing you wouldn't understand
That looks like a JTEC style PCM and the symptoms you describe are very common on those. Wriggle the connector or the wires and random things will happen… sometimes… but the engine will stutter or stall. If its got the two t-15 torx screws in the front under those connectors, remove the left one and see if it starts and runs. If so, add two washers and some loctite to the screw before screwing it back in and it should be good to go. If its the newer model with the screws around the perimeter then check each one by one or loosen them all a bit and see if it runs… Screws that are too long apparently don't know how to "Dodge" circuit boards. 😉
Edit: I'm pretty sure the newer ones like the one in the 2005 Neon are not affected by this…
Thanks for the video.
i had a lot of problems on my 96 jeep gc and a lot of times it was the pcm from blowing up coils after shifting out of park to blowing up transmissions they have voltage regulator on the front thin panel that gets hot and over time bulges the front panel of the pcm
fortunately an ECM isn't very expensive….$100 at PULL A PART…. do it to it..👈
i would gladly pay to have eric and keith teach an online class/ video tutorial on pci data bus, can network, no com
Green goblin 👺 inside….. Bless the roadways with salt and brine.
Thank you Eric. Good job. I appreciate your videos. Have a good night and weekend.
Greatness knows no rest. Good job Eric!
I thought the snap on broke.
Very interesting, he tried to save money by going used which is always a gamble on electrical parts now it's going to cost him more😞😞
Worked on a new Pontiac that had a dead pcm and replacement lasted about two seconds….had a rodent chewed spark plug wire and was blasting 40,000 volts into the wiring harness…..
Lol a real mechanics money maker there. Had one been there done it. Chrysler is a joke! Their vehicles are the absolute worst. I'd rather have a Range Rover.
i clicked subscribe long ago
As always, Great Video, learn so much watching your uploads!
a southern used PCM"…. everything in the south is Better!