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P1391 Intermittent loss of CMP or CKP
Posted to Technical Discussion Forum on 8/3/2009 8 Replies

Hi TDF,

I have a vehicle from a shop that installed a remanufactured engine assembly into this 97 Jeep Wrangler. It starts and drives fine. The vehicle will set a P1391 after driving approximately 5 miles. I'm thinking that the synch between the CMP and CKP ... Login to read more.

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car Vehicle Data

1997 Jeep Wrangler SE 2.5L

Engine2.5 L
Trans5-speed Standard

car Vehicle Data

1997 Jeep Wrangler SE 2.5L

Engine2.5 L
Trans5-speed Standard