Jeep Wrangler Forum banner
  • Hey everyone! Enter your ride HERE to be a part of JUNE's Ride of the Month Challenge!

1 - 6 of 6 Posts

·
Registered
Joined
·
89 Posts
Discussion Starter · #1 ·
So about 2 months ago my jeep had the NO BUS code and it died. I cleaned all the connections and grounds, and that seemed to clear up the problem. It was driving fine ever since. No codes nothing. Well today I go out to start her up, and everything is normal when I put the key in, then I go to turn the key and click, EVERYTHING dies. No lights, no power anything, no radio, no turning of the motor. Just completely dead. So I go under the hood, and mess with the ecu connections, jiggle them around, disconnect the battery etc. Go back to start it, I push the key in and the dash lights come on. Try to turn the key and BAM everything is dead again. I have a test light, that I put on the battery and the light came on, but i dont have a voltmeter. Any ideas? Is it most likely the battery? Or probably some other electrical problem?
 

·
Registered
Joined
·
1,221 Posts
I'd narrow down the battery being the culprit first. Sounds like something is shorting out and freaking the ECU out or the ECU is crapping the bed?
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #3 ·
Well, I got the battery tested, and it was fine. So its some sort of electrical issue elsewhere. One thing I noticed, was recently when I would start the jeep up, if I tried to turn the signal's or wipers on, the power to the stereo, wipers and blinkers would die, so I would have to turn the key forward a bit (while the jeep was running) and it would restore the power back to the accessories....any ideas with that?>
 

·
Registered
Joined
·
2,473 Posts
If you can fix it by wiggling the ignition switch, the contacts in the ignition switch are defective. Replace it.

For the totally "dead problem" - check the minus cable where it attaches to the engine - bolt loose? Crimp/weld bad? I think I've replaced 3 or 4 that looked fine, but were bad.
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #5 ·
If you can fix it by wiggling the ignition switch, the contacts in the ignition switch are defective. Replace it.

For the totally "dead problem" - check the minus cable where it attaches to the engine - bolt loose? Crimp/weld bad? I think I've replaced 3 or 4 that looked fine, but were bad.
Will do the ignition. And by the minus cable, you mean the negative battery cable correct? I found that it attaches right near the oil filter, so I cleaned that contact because it was pretty dirty. Still no start. I think I am going to go over all my grounds tomorrow and clean the hell out of them. I think that may be the problem. Its pretty dirty under there.
 

·
Registered
Joined
·
2,473 Posts
For the no-start, no crank:

Often the crimp on the ends of the battery cables go bad - more often than you'd suspect.

Use a jumper cable from the batt (-) to the engine block. If it starts now, the cable is bad.
Try it on the (+) side too.
 
1 - 6 of 6 Posts
Top