Question about 1994 Jeep Grand Cherokee
3 times, same symptoms-must be something else. Check crank position sensor and cam position sensor. Crank sensor is for ignition timing-advance and retard. Cam sensor is for fuel injector synchronization. If one is bad, it may cause problems like yours. Just a suggestion.
Posted on Nov 20, 2013
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Posted on Jan 02, 2017
This is 100% certainly the "CKP" or crank possition sesor. I had the same problem on my SE 4.0L cherokee, i replaced the ignition pack - leads, dizzy cap, coil as the dizzy cap had major dirt and arc marks inside, king pin lead was loosing connection when warm also.
However this did not solve my problem, it helped, thats it.
I then used the in car diognostic system to see what that told me, sure enough - code 11, code 12 and code 55. meanings as follows.
11- no signal from crankshaft sensor
12 - main battery power disconnected
55- end of test
Once i replaced the crank shaft sensor and disconnected the battery for 30 mins to reset all fault codes it removed code 11.
Follw this link to learn how to use the on board diognostics - http://members.cox.net/wilsond/engine_codes.html
Hope this helps people out there!
Posted on Feb 23, 2009
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