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Home >> Jeep >> 2005 >> Wrangler X, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 627 (Powertrain Diagnostic Procedures - DRIVEABILITY - Gas - Symptom & Diagnostic Tests (DTCS P0031 To P1899)) >> DRIVEABILITY - Gas - Diagnostic Tests >> P1391-Intermittent Loss Of CMP Or CKP (Gas - Except NGC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. GOOD TRIP EQUAL TO ZERO
  2. CHECKING INTERMITTENT CMP SIGNAL WITH LAB SCOPE
  3. CMP WIRE HARNESS INSPECTION
  4. TONE WHEEL/PULSE RING INSPECTION
  5. CKP WIRE HARNESS INSPECTION
  6. TONE WHEEL/PULSE RING INSPECTION
  7. CHECKING INTERMITTENT CKP SIGNAL WITH LAB SCOPE
  8. CAMSHAFT POSITION SENSOR
  9. CRANKSHAFT POSITION SENSOR
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