Questions & Answers for: Pontiac Montana backfire

PO171 & PO440 2 times Got a new tank of gas and now my car is jerking Pontiac montana 1999 checked gas cap seems fine however gas gage does not work correctly, but hasn't for about 6 months. It jerks ...

3200 v-6 really rough running backfire through 3200 v-6 was running good then made a funny noise and stalled now it runs really rough and backfires through intake check the mass air flow sensor in the

my 2000 pontiac montana will start up then immediately die, if i give it gas to try and keep it running it sounds like it backfires through the fuel system I smell a bad fuel pump.. Easiest way to ...

When the gas gauge gets to a 1/4 of a tank, the needle just flies all over the place. Another problem I have is it cutting off if you do not warm it up for a long period of time. It starts right back ...

my 99 pontiac montana van misses and backfires then quits and runs battery down motor misses and back fires then quits and battery is dead. All dash lights will be on and a clicking sound under dash. ...

pontiac montana backfiring exhaust glowing red, rough idle Check the MAS (mass airflow sensor), clean it, maybe it will help, but it could be a computer problem too

It will idol but backfires and sputtering when you throttle up with no codes on the scanner. Airflow sensor is bad or dirty.

backfires starting heads were done now it will not start and backfires Sounds like the timing system is out of time! Backfire is usually caused by a timing problem or maybe a fuel problem. Hope this ...

turned it over, it back fired twice and It won't start I replaced the fuel pump 15 amp fuse. would it be the relay switch rite beside the fuse that is not working? the van will turn over, but will not