Question about 1997 Jeep Wrangler
Restarts after a while but always shuts off within a few miles
Similar problem due to wiring on ASD (automatic shutdown relay) not connected tight to terminals on underside (fuse box under hood). I encountered this problem repeatedly after a mechanic (national chain) kept removing this wire for some reason (eventually causing computer to fry). Also related problem misfiring/backfiring/bogging down under certain driving conditions I traced to the battery sliding into computer wiring harness and disrupting sensor input/output signals. Placed 1" spacer on rear clamp to push battery forward, which cured this problem.
Posted on Jun 20, 2015
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Posted on Jan 02, 2017
Check fuel pump for pressure and output. If it's not that, don't start guessing... have a scanner put on it and get some codes. While some codes can be ambiguous, it will serve to start you in the right direction!
Posted on Jan 18, 2009
any leaks in intake or exhaust upstream of the sensors, sparkplug
condition and engine controls/sensors for out of range operation
(including fuel pressure and condition of regulator)
IAC should be cleaned and checked as this can cause poor idle and shut down. I'm not saying not to change O2 sensors, but unless everything else if OK, it probably won't help.
Posted on May 29, 2009
SOURCE: jeep shuts off while driving
turning over is cranking (different words for same thing) You need to do some testing to determine what is failing. Good guess would be the crank sensor however without testing, you may not solve the problem by just replacing it. I suggest you obtain a decent manual such as chilton or haynes and using a digital multi-meter, perform the tests on your sensors outlined. Since the problem is intermittent you need to test both when working and also when in "no start". Testing helps avoid changing non-failed and expensive components, and is always the best thing to do before buying parts.
No one here can tell you what's wrong simply because no one can do that essential part of diagnostics by "long distance"
Good luck!! (if you need help with anything you discover, feel free to ask!!)
Posted on Nov 01, 2009
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