Bullhead
New Member
Just shy of two weeks and around 400mi, no issues whatsoever. Jeep is running great!
05-06 PCM issue is solved
- Thread starter Wranglerfix
- Start date
OP
OP
No, The manuals have their issues as well.
The best fix is when your oem part goes, do not replace it with an oem part. They’re not repairable. If our pcm fails, we can repair it whereas the oem part is DOA.
Thanks,
Mark
The best fix is when your oem part goes, do not replace it with an oem part. They’re not repairable. If our pcm fails, we can repair it whereas the oem part is DOA.
Thanks,
Mark
Truer words have never been written...
I love the '05/'06 PCM — that's how we came to own our LJR. It was throwing CEL codes that the PO must have chased to the grave. Eventually gave up and traded it in on a new Wrangler. We scored a great deal from the Jeep dealership because of the "known issues," but then through complete stroke of luck they said they could not release the vehicle to us until it passed inspection, and in the county we purchased it in the CEL meant it wouldn't pass. So we waited them out, and let them replace parts until they eventually threw their hands up and bought the PCM.
MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
Supporting Member
Ride of the Month Winner
Almost 400 miles on my Wranglerfix PCM so far. No issues.
Last edited:
Gooniehawk
New Member
Just received mine today. For the first time in 4 years my check engine light finally went off. I only drove it around the neighborhood so I’ll need further testing but I will say it feels totally different.
No more lag when I get on the gas. Will check back later once I get some miles put on her.
No more lag when I get on the gas. Will check back later once I get some miles put on her.
Bought a 2oo5 last year...had a po700 code been having a trans issue either way I'm buying one as to not have to worry about this issue. The 05 06 is a pretty great jeep and when I saw no one could get a pcm I was a bit mad at myself for not seeing the issue but now I'm so happy to see a answer.
Yep this is my first post. I've spent numerous hours luking and rebuilding my red 05 and today I'm ordering ..Mark you still just a $25 discount for forum members?
Yep this is my first post. I've spent numerous hours luking and rebuilding my red 05 and today I'm ordering ..Mark you still just a $25 discount for forum members?
Another satisfied customer. 1 month and about 200 mi and all is good. I've hauled countless loads of tree limbs so there is more hrs than miles.
OP
MountaineerTom
LJ Enthusiast, Retired USAF Weapons Loader
Supporting Member
Ride of the Month Winner
OP
What kind of issues have been seen on the manual PCM? I know the autos have the shifting problem but wouldn’t know what to watch for on the manual.
OP
Hey Rasband,
The main issues with the manuals are low RPMs at idle, stalling at idle and flat out dying in some cases.
My manual's computer had all four O2 heater control circuit failures at the same time P0031, P0037, P0051, P0057. No drivability issues but i couldn't get the Jeep SMOG tested and registered. From what I recall the drivers in the computer shit the bed and cannot be repaired. I don't know if this is common among manual 05-06 TJs (I doubt it) or a fluke specific to my LJ.
I'm working through some stalling issues now, but trying to diagnose rather than guess as to the issue to not spend too much on unnecessary parts. It doesn't sound like mine overlaps beyond the intermittent stalling.
Yeah, I made the mistake of firing a volley out of the parts cannon (4 NTK O2 sensors) trying to get it SMOG tested and registered. I was fortunate to get the help of a retired factory mechanic who diagnosed the failed computer using his DRB.
OP
I threw new O2s in mine as well, but that was one flippant error and the ones I pulled looked close to original. To avoid derailing the thread too much, I am trying to diagnose here:
https://wranglertjforum.com/threads/intermittent-stalling-help.26320/