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  1. XJ Cherokee Technical Forum
    so my jeep is a 2001 Cherokee and i needed a new pcm. my jeep itself dose not have the skim feature. the new pcm i got was a plug and play once installed it runs for 3 seconds and shuts off no lights or anything. so it is possible that the pcm i purchased has the skim enabled on the pcm? causing...
  2. Engines & Drivetrain
    Can someone assist? I just recently changed a head cylinder (bank 2) passenger side. It ran great at 1st. Now Poor idle, one day lean condition, another day rich condition, O2 data all over the place depending on the day. Noxious smell when running. Doesn't smell like gas, nor sweet but...
  3. ZJ Grand Cherokee Forum
    Hey guys, after dozens of flood of threads in here finally i finished the car ground up. it's perfectly okay, rewired everything from scratch. changed almost all minor parts and running so smoothly. BUT THE PROBLEM IS FUEL CONSUMPTION it's literally drinking it, 5.9 ecu on 5.2 engine, costing...
  4. ZJ Grand Cherokee Forum
    Hello there, as you know recently i was having ASD issues with my 5.2 ZJ and eventually i decided to rewire everything from scratch. Found the problem though, there was so many open cable which possible to make short circuit. The thing is, previous owner installed 5.9 ecu (pcm) and most of pins...
  5. WJ Grand Cherokee Forum
    Hoping someone can help, 2001 Jeep GC Laredo 4.0 WJ, when I connect d7 scan tool it does not show any information about the PCM the car runs and drives daily so I dont understand what the problem could be. Ive cleaned up the obvious grounds on the body and Engine block with still no...
  6. Jeep Cherokee & Comanche Forums
    So I’ve bought a 97 two door jeep for 500. Nice lift and tires on it , turns over strong , ya da ya da . Im getting fuel , I’m getting spark from the coil, but not the cap. I’ve replaced the wires, plugs, crank sensor, pick up in distributor, the coil, the cap blah blah blah I’ve replaced all of...
  7. Jeep Wrangler Forums
    I bought a 4.0L from a friend who completed an LS swap. The donor engine is from a 2000 TJ. I got the 4.0L with the complete engine harness and PCM. I need some help getting it going in my 1988 YJ with a new AX-15 from Novak. There are 2 large multi connectors loose, and one empty connector...
  8. XJ Cherokee Technical Forum
    Hi, I own a 97 XJ 4.0l automatic transmissionI've owned it since around 2005 Its been working well for me up until the first of the year. It has always been a jeep that I have had to pat the gas when cranking to get it to fire up. (( for those who grew up with carburetor engines know what I...
  9. WJ Grand Cherokee Forum
    Were barely into the first quarter of the year and I've been buried with work helping you guys and gals get new pcm's for dead Jeep's with the infamous crank no start condition. Several of you that needed help are pretty tech savvy and were nice enough to take some tests and make notes so we...
  10. KJ Liberty Forum
    Hi. I'm trying to fix a 2004 KJ with the 2.4L. I'm having an issue with the uptream O2 sensor reading and the car is driving very poorly/stalling easily when driving. I'm getting an O2 signal of 1.27V when using a cheap scanner with the O2 connected. When I start the engine, 30 seconds later or...
  11. ZJ Grand Cherokee Forum
    Hello. I've been having multiple ongoing problems with my ZJ for a while now. The problem codes remaining are 53 (internal self test malfunction) and 32 (EGR solenoid circuit). My symptoms are as follows: -Intermittent stalling after coming to a stop or going a very slow parking lot speed. Pops...
  12. JK Wrangler Technical Forum
    I don't drive my jeep daily so sometimes the battery is dead if I don't start it for a few weeks. Last week I went to start it , battery was weak, and it wouldn't crank so I jumped it. It started but only ran for a second then died . Now it won't start at all . When you turn the key forward the...
  13. WJ Grand Cherokee Forum
    I've got an 02' WJ with the 4.7 (Non H.O.) that has ran fine until a few days ago. The car would start and die after going down to idle RPMs (maybe 1000 or a little more). Now it doesn't start at all, only cranks. Fuel pump is good but doesn't kick on most of the time. I'd lean towards it being...
  14. KK Liberty Forum
    Hi all, My 2012 KK is not charging. I think I need a new PCM, and I'm curious if I'm missing anything before I go buy a new one. The day I first got a low battery signal I replaced the battery, original was 10yrs old so it was time anyway. After I put a new battery in, the alternator got REALY...
  15. KK Liberty Forum
    Alternator and battery are brand new. Through process of elimination, I believe I have narrowed it down to the alternator is not receiving the control signal. I need to test the continuity of the 2 wires that connect to the alternator but I don’t have the wiring diagrams to figure out which PCM...
  16. KJ Liberty Forum
    Hey Y'all! Been a while since needing advice! Having a Cylinder #6 Misfire. Even my Mechanic is stumped. He's ran Computer Diagnostics Twice now. Original diagnosis was Short Circuit on the PCM. I replaced the unit and it threw codes for the entire Passenger side bank. Both PCMs at least...
  17. Jeep Grand Cherokee & Commander Forums
    Hey Jeep Forum! Came across this group by recommendation from another Jeep group on Reddit - glad I got the rec because this site is chock-full of good info (aka glad to be here!) I have posted versions of my dilemma in some other places but my main question has evolved a bit and now I am...
  18. TJ Wrangler Technical Forum
    Hello! I'm in the process of an LS swap. I started with the stock 4.0L 42RE auto and have installed a 2005 5.3L / 4l60E using many parts from Novak Industries for the swap. I intend to keep the Jeep wiring harness to retain factory gauges/controls along with the re-worked (by Novak) GM harness...
  19. Engines & Drivetrain
    Hello all, I purchased a 2007 Jeep with 180,000 miles on it and it had a engine light on and when check was throwing a P0882 code and is stuck in 4th gear in limp mode. Originally the codes were: P0882, P0846, P0871, P0988, and P0876. I was able to reset all but P0882 and have tried the...
  20. WK Grand Cherokee & XK Commander Forum
    Morning everyone, working on a PCM ground wire issue issue and am hoping someone can help. Basically, the ground’s not connected and I’m not sure where it goes. As backstory, my 2005 WK 5.7L’s (bought used, 162K miles) is not cranking over. I’ve changed the battery and am running through some...
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