Need advice for misfire issue


Rooscooter

TJ Guru
Joined
Jun 7, 2020
Messages
6,583
Location
Chandler, Arizona
There are two good quality providers of complete wiring harness kits for CJs, Painless and Centech. I completely rewired a friend's '73 CJ with a Centech wiring kit and it was an awesome product. Each wire in the harnesses was even labeled individually for what it did.
Yeah.... I looked at those and actually called Centech. My CJ is a 82 with a 401 from a 71 Javelin in it (401-B4) and some other modifications. I'd be cutting up a "stock" harness to some respect anyway.

Making one from scratch using the pieced together one that was on it was a good "learning" experience. That's what I'm telling myself anyway.

in the process I'm putting a new custom dash (new metal cut to match new stuff) with modern instrumentation and a double din stereo system in it. LED's all around and a few other things as I go. In the past I'd sone some engine and drivetrain work on my jeeps over the years but had never tackled a big wiring job until now.
 
OP
Haaris Khan

Haaris Khan

TJ Enthusiast
Joined
Nov 7, 2019
Messages
227
Location
Roanoke, Va
Just got my PCM back and plugged it back into the Jeep. I started the jeep and it was hesitant to start but still started. I have noticed that whenever I disconnect the battery my jeep will run fine for a little after I reconnect it. It will run fine for maybe a few days before the codes pop up again and it loses power. The first start of the day though it always kind of struggles.

Another thing which might be unrelated is often times when it struggles to start it blows the manifold vacuum line off at the elbow connection.