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2003 Pontiac Grand Am SE 3.4L Misfire, MIL Lamp on
Posted to GM Driveability on 12/30/2011 31 Replies

I keep getting a p0300. On my scan tool it shows a constant misfire on cylinder 3 at idle. If I raise the rpm to 1500 no load and it goes away. At all times the engine runs smooth. I have swapped all ignition parts with know good parts, no change. I replaced t...

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  Related Documents & Media  2003 Pontiac Grand Am SE

 
Message Closed w/FIX

car Vehicle Data

2003 Pontiac Grand Am SE

VIN 1G2NF52E33
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / pfi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Pontiac Grand Am SE

VIN 1G2NF52E33
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / pfi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected