by Anonymous on January 28th, 2009

Anonymous

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I have a 2003 GrandPrix.It has started to stall every time I stop on a light or stop sign.Sometimes th rpm gauge isnot stable and it will stall and some times it will jump every time there is erratic rpm.It also missfires when I am cruising on 80 mile/h.

Answers. 1 helpful answer below.

  • by gm auto tech on February 1st, 2009

    gm auto tech

    Check the fuel pressure regulator. Pull the vacuum hose off to see if fuel is in the hose. No fuel should be there. If it is than replace regulator.

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You're reading I have a 2003 GrandPrix.It has started to stall every time I stop on a light or stop sign.Sometimes th rpm gauge isnot stable and it will stall and some times it will jump every time there is erratic rpm.It also missfires when I am cruising on 80 mile/h.

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