The battery is fine.Anything that does not need the key works. no radio, no warning lights, no start. Already replaced the ignition switch twice. it has also shut off twice while driving.
I would suspect that the ignition starter switch is defective.
SOURCE: 1998 Jeep Wrangler Electrical Short in Steering Column?
I had a similar problem with my 2000 Jeep TJ and I found the problem in the wiring harness under the hood.several wires were corroded and almost burnt off.If you remove the black tape which keeps the harness bundled together and if you see evidence of "green" type powder or "gook" it's most likely where the wires have faulted.
SOURCE: 2006 Jeep Wrangler won't start
First, make sure you can turn the engine by hand. If you can't then the starter can't turn it either. Have someone else turn the key and look for the source of the click...may be a relay. Go over the starting circuit with a volt meter. Check for power at the starter main terminal and then with the key turned to "start" check for power at the trigger terminal on the starter. Check battery voltage and check relay operation.
You have a neutral safety switch on the transmission if its an automatic and a clutch switch if it's a stick. Check them as well. Make sure battery grounding on fender and block are also clean and secure.
Testimonial: "Will try! Thanks!"
SOURCE: 2006 Jeep Wrangler electrical problem and wont start
its called, riding your fuckn peddal to the medal syndrome....nepoleaon comp. ect....
SOURCE: My 98 jeep grand cherokee wont start.
fuse 8 40a supplies power to starter relay and ignition switch, to close the starter solenoid and engage the starter which draws directly from the battery. check to see that the starter relay is closing, if not ensure that the park neutral switch is not faulty (open circuit), it provides path to close relay (ground side) on the 85 - 86 terminals. if the starter relay does not close the starter will not run. if you have a spare relay swap out the relay for a quick fix attempt. hope this helps
SOURCE: 1989 Jeep Wrangler no power when key is in on position
Honestly, it sounds like a bad ignition coil. When they get corroded inside they will draw power on a scale much higher than anything else on the vehicle. It is a coil and it's job is to take a little power and make a lot of it. If it's only when the key is in the "run" position, that is likely the case. The only real difference between the two positions is that in the run position there is power being delivered to the ignition system. Good luck.
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