Question about 1995 Jeep Wrangler

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My jeep starts fine when it is cold like first thing the morning but driving around town turning it on and off it will not start again until engine cools. I just replaced the crank shaft sensor. its a 95 wrangler 4 cylinder

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Crank sensor, cam sensor ignition coil and any slightly deteriorated wiring connections (both hot and ground) can all be affected by temperature changes. Re test the crank sensor as well....aftermarket ones are not all that reliable.
Chances are you are going to spend some intimate time getting to know your electrical system. Get a decent multi-meter and a chilton manual.
(haynes is OK for mechanical items but not electrical). In addition to test procedures outlined in the manual, clean every power connection (including fues connectors and connection on power distribution center, and ground point (fender grounds, firewall ground and block grounds...main wire and smaller ones near coil and sometimes near the oil filter). Pay attention to voltage drops You should have battery voltage, or very close to battery voltage at all terminals. Re-check power at the battery every half hour if you are working with the key on as that voltage will change).
I've found that having a clip board and pen handy is very useful. Write down each test and the results you see. Eventually it will give you a "picture" of what is going on there.
Hopefully, you will find the problem quickly (like a bad ignition coil) but if you stay with it, you will find the problem.

Posted on May 28, 2010

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Sometimes the ignition module will heat up under normal operation and fail to function until it cools off. you might take it off and take it to a parts store and they can test it for you. good luck.

Posted on May 28, 2010

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You can check this by doing the following next time you do your morning start up proceedure.

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