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Pontiac Repair/2003 Pontiac Montana 3.5


fuel filter has been changed car runs fine for awhile then won't start wait awhile anywhere from 45 minutes to hours and it cranks, when you turn it off it won't. Have change fuel filter twice and it works for awhile then does the same thing. could there be sediment in the tank? Fuel  pump going out.  Checked the pump and it seemed to have lots of pressure and it comes on.  Help

Hi there.

well when it will not start you need to see what your missing. either fuel or spark one or the other. fuel filters are change usually after it's too late the pump works too hard and then they are done due to trying to push fuel though a plugged filter. that engine needs about 45 PSI to run right. if you have a gauge check the pressure when it doesn't start. also if you have a spark check to see if you have spark when it will not start check one wire on each of the 3 oils. it could be a heat soak issue with an ignition module or a crank position sensor once it cools down it runs. good luck :-)

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Todd Puccio


General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.


Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician


Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

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