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2004 Chevrolet Astro 4.3L Poor Idle Quality, Misfire
Posted to GM Driveability on 11/5/2008 12 Replies

Intermittant severe misfire only on cyl 3, will not happen when engine is cold, misfire gone above 900RPM as indicated by misfire counter. Spark plug, wire, cap and rotor all known good. KOEO fuel pressure within spec, spray pattern of injector 3 ok. Engine co...

12 Replies Received (View Replies)

  Related Documents & Media  2004 Chevrolet Astro

 
Message Closed w/Summary

car Vehicle Data

2004 Chevrolet Astro

VIN 1GNDM19XX4
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle, Intermittently

Trouble Codes

P0303Cylinder 3 Misfire Detected
Message Closed w/Summary

car Vehicle Data

2004 Chevrolet Astro

VIN 1GNDM19XX4
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle, Intermittently

Trouble Codes

P0303Cylinder 3 Misfire Detected