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P1391 Diagnostic Trouble Code Discussion for April 2011

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1997 Dodge Ram 2500 8.0L No Start VIN: 3B7KF23W6V
P1391: intermittent loss of CMP or CKP. ... intermittent no start, hard start & sets 2 codes but no MIL is illuminated. Check engine light comes on & goes out during key on but never after a code sets. I am getting a P1391 on every time even if the engine starts & also a P0320 when it do...
April 26, 2011