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1999 Pontiac Montana 3.4L Misfire, MIL Lamp on
Posted to GM Driveability on 10/24/2008 9 Replies

Van has code p0300, with scan tool number 5 cyl is the one missing. Miss is intermittant and mostly at idle. Noid light and spark tester never misses a beat on #5 cylinder, but with everything hooked up and engine running #5 has intermittant miss, engine warm ...

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  Related Documents & Media  1999 Pontiac Montana

 
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Montana

VIN 1GMDX03EXX
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Montana

VIN 1GMDX03EXX
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle, Intermittently

Trouble Codes

P0300Multiple Misfire Detected