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2000 Pontiac Montana 3.4L Misfire
Posted to GM Driveability on 6/25/2012 15 Replies

Help! this van is driving us nuts. We swapped out the old engine with a fresh reman (old one had a broken piston skirt and making noise, but ran ok otherwise). Ever since the new one was installed, it has had a constant miss on #2 cylinder. We checked for vacu...

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Message Closed w/FIX

car Vehicle Data

2000 Pontiac Montana

VIN 1GMDX03E7Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / MISFIRE #2 CYLINDER
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways
Misc.New Engine Installed

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Montana

VIN 1GMDX03E7Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / MISFIRE #2 CYLINDER
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways
Misc.New Engine Installed

Trouble Codes

P0300Multiple Misfire Detected