× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1391 Diagnostic Trouble Code Discussion for June 2013

CKP Or CMP Sensor Signal Intermittent


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1997 Chrysler Sebring JXi 2.5L Hesitation, Misfire, MIL Lamp on VIN: 2C3EL55H2V
P1391: intermittent loss of cmp or ckp. Hello everyone I have a chrysler sebring that we have been messing with for awhile now (10mths) orignally if presented with a misfire rough running condition which after testing we determinded that it was a bad cmp sensor which is built in distributor so we so...
June 07, 2013
1996 Jeep Grand Cherokee Laredo 4.0L No Start, Cuts out VIN: 1J4GZ58S0T
P1391: CKP Or CMP Sensor Signal Intermittent. ... queen came in on a rollback 2 weeks ago as a no start condition, it had dead crankshaft position sensor with P1398 and showed no activity on live data, replaced with a bwd aftermarket and ran. 2 days later it came back in with a no start again. This time i...
June 10, 2013
1996 Jeep Grand Cherokee Limited 4.0L Misfire VIN: 1J4GZ78S8T
P1391: CKP Or CMP Sensor Signal Intermittent. ... a no start. I replaced crank sensor with a napa brand. cs611 was part number. Jeep then fired up but I could not drive it would stall as soon as put in gear. We then checked spark plugs and they had a gap of .90 and they are supposed to be .35. After repla...
June 13, 2013
1996 Jeep Grand Cherokee Limited 4.0L Misfire VIN: 1J4GZ78S8T
P1391: CKP Or CMP Sensor Signal Intermittent. ... a no start. I replaced crank sensor with a napa brand. cs611 was part number. Jeep then fired up but I could not drive it would stall as soon as put in gear. We then checked spark plugs and they had a gap of .90 and they are supposed to be .35. After repla...
June 14, 2013
2002 Dodge Ram 1500 ST 4.7L MIL Lamp on VIN: 3D7HU18N02
P1391: cmp or ckp signal intermittent codition. ... cold, could not duplicate the problem but i did find it had bad heads. when i pulled the heads sure enough they were cracked. so i replaced them with remanufactured ones also i was on some what of a small budget for this job so i purchased the timing set f...
June 16, 2013
2002 Dodge Ram 1500 ST 4.7L MIL Lamp on VIN: 3D7HU18N02
P1391: cmp or ckp signal intermittent codition. ... cold, could not duplicate the problem but i did find it had bad heads. when i pulled the heads sure enough they were cracked. so i replaced them with remanufactured ones also i was on some what of a small budget for this job so i purchased the timing set f...
June 19, 2013