1999 Pontiac Montana Logo
Anonymous Posted on Nov 01, 2011

My van lost power then died and wont start, the vehicle was driving fine then it just lost power...it was idling around 2-300rpm then completly stalled, when i try to start it it just cranks over

1 Answer

Marvin

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  • Pontiac Master 85,242 Answers
  • Posted on Nov 01, 2011
Marvin
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Have you had the electronic engine control system scanned/tested for fault codes? it will need to be scanned to obtain the fault codes, this testing is key to finding out what the problem may be that is causing the engine to stall. The fault code test can be done free of charge by any Autozone auto parts store, Aamco transmission or Kragen/Oriley auto parts store. Ask for a "OBD2" (on board diagnostics generation 2) fault code test.

  • 3 more comments 
  • Anonymous Nov 02, 2011

    i have a code checker and it didnt have any, if i let it sit for an hour or so it tries to start but it just wont catch

  • Marvin
    Marvin Nov 02, 2011

    You have a few possibility's here, one the code reader you are using is defective or the data link connector has no power. Next would be the electric fuel pump is going out and it stops running when hot, then once it cools down it will start again, have seen this more than once. Last is that the PCM (computer control) is failing when its internal component's heat up, that is the least likely. I do believe at this point you should seek the help of a local Dealer service dept.

  • Anonymous Nov 02, 2011

    thanks for the quick response...i know the obd2 is good ..i tried it on my other car...now i let it sit for a whole day and it still wont fire but it tries once then just cranks

  • Marvin
    Marvin Nov 02, 2011

    When you say you checked the OBD2 on your other car what do you mean exactly, OBD2 is a system, it is not a part like a O2 sensor or Throttle position sensor, all these sensors provide input to the OBD2 systems control computer referred to as the PCM (powertrain control module) So did you check for fault codes before you disconnected anything? Do you hear the fuel pump run for about 1 second when you turn the ignition key to run? You can easily here this at an open gas cap, it is a low hum.

  • Marvin
    Marvin Nov 02, 2011

    If you still don't understand what i am asking you alone can call me at home if you are in the USA only at my cell number 925-577-7157. This offer is for you and you alone so other parties on fixya with similar problems please do not call this number.

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