Question about 1991 Jeep Wrangler

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1991 jeep wont start

Replaced the coil and it turns but wiil not crank

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I had a problem just like this,
when you turn your key check to see if your fuel pump clicks on if not then when you crank the engine over have someone see if you're getting spark to the distributor or not and if your fuel pump isn't turning on and you aren't getting any spark try replacing the crank position sensor. these are known to go bad in jeeps and it's an easy fix. the sensor's located right ontop of the bellhousing on the tranny.

Posted on Jul 06, 2009

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Did you replace the coil because it wouldn't start before? If it ran before, there must be a mis-connection somewhere. I assume by your stating that 'it turns but will not crank', to mean that the engine will crank over with the starter but won't start and run. True?

Posted on Jun 29, 2009

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1 Answer

My jeep is turning over but wont start. I replaced the coil and it will occasionly spark and attemt to start only to soon die then it wont get another spark at all. How do i fix this??


Jeeps most common problem is with these particular vehicles are the crank sensors. May also have a bad reluctor. which is part of the flywheel. What you need to do first, Need to first remove the crank sensor which is on top of the bell housing. Remove it and inspect for cracks if you see any cracks replace it. and reset gap. You can use a small piece cardboard like the thickness of an oil filter box,tape it to the tip end of the sensor,and reinstall. After inspection or replacement of the sensor, start vehicle,Also keep an eye on your tachometer . Your tachometer should slightly come up when cranking. If not replace sensor.The crank sensor is a part of the ignition system, the pcm needs to see where top dead center is or where #1 cylinder is to determine when to spark, simply put. So the pcm knows when to fire.

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