Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
you seem to have a bad crank sensor
CIRCUIT DESCRIPTION The Crankshaft Position (CKP) sensor signal indicates the crankshaft speed and position. The CKP sensor is connected directly to the Powertrain Control (PCM) Module, and consists of the following circuits:
CONDITIONS FOR RUNNING THE DTC
CONDITIONS FOR SETTING THE DTC The PCM determines no signal from the CKP sensor for more than 3 seconds .ACTION TAKEN WHEN THE DTC SETS
CONDITIONS FOR CLEARING THE MIL/DTC
DIAGNOSTIC AIDS The following conditions may cause this DTC to set:
Excess crankshaft end play causes the CKP sensor reluctor wheel to move out of alignment with the CKP sensor. This could result in any one of the following:
For an intermittent, Refer to Intermittent Conditions. See: Symptom Related Diagnostic Procedures\Intermittent ConditionsTEST DESCRIPTION
REMOVAL PROCEDURE IMPORTANT: The CKP System Variation Learn Procedure will need to be performed wherever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure .
INSTALLATION PROCEDURE IMPORTANT:
lets check the fuel presure..these must have no less then 60psi at any time...these fuel pumps will get weak sometimes and do this
this dont prove anything...you needto put a gage on it
My man put guage on-read 60 psi-?