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1999 Pontiac Firebird 3.8L Misfire
Posted to GM Driveability on 1/22/2016 24 Replies

The miss counter was constant when first tested. It was better after the plugs and wires, but not a lot. The miss almost went away after replacing the injector. It runs much smoother. But number 5 shows a miss every 6 seconds or so, no longer constant. The fue...

24 Replies Received (View Replies)

  Related Documents & Media  1999 Pontiac Firebird

 
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Firebird

VIN 2G2FS22K8X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Firebird

VIN 2G2FS22K8X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected