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P1391 Diagnostic Trouble Code Discussion for May 2012

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
2001 Jeep Grand Cherokee Limited 4.7L Hesitation, Surge, Cuts out, Misfire VIN: 1J4GW58N31
P1391: CKP Or CMP Sensor Signal Intermittent. This is a 01 grand cherokee 4.7 engine. This came in with a rod bearing bad. We rebuilt the engine all new timing chains and guides. New crankshaft (reused the original tone wheel), the camshafts were never removed from the heads. The engine runs perfect until...
May 06, 2012
1998 Plymouth Voyager 3.3L Hesitation VIN: 2P4GP25R8W
P1391: CKP Or CMP Sensor Signal Intermittent. Van came in with a code P1391 for intermitent cmp/ckp signal,and a hesitation under a load. ordered both ckp and cmp from dealer and replaced them after inspecting ckp and noticing alot of debri on magnet. problem was still present after installing new cmp and...
May 29, 2012