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1991 Chevrolet Camaro Z28 5.0L No Start, Poor Idle Quality, Hesitation, Misfire
Posted to GM Driveability on 3/26/2007 9 Replies

This IROC has an intermittant no start after driving about 20 min. It apears that the inj pulse is insufficient, circuit tests were all good so we replaced the ecm, and the problem did not change. The only thing I can find that is not within specs is dist. ref...

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car Vehicle Data

1991 Chevrolet Camaro Z28

VIN 1G1FP33F0M
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TPI
EmissionsCALIF.
SymptomsNo Start, Poor Idle Quality, Hesitation, Misfire
OccursAfter a Hot Soak, Intermittently
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet Camaro Z28

VIN 1G1FP33F0M
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TPI
EmissionsCALIF.
SymptomsNo Start, Poor Idle Quality, Hesitation, Misfire
OccursAfter a Hot Soak, Intermittently