1999 Buick Lesabre won't run unless it's at super high idle

1999 BUICK LESABRE
180,000 MILES • 6 CYL • FWD • AUTOMATIC
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BLONDIEBEEGIRL
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  • 1 POST
I went to start it and it cranked, but would not fire. I decided what the heck and put the accelerator all the down. It fired, but would not stay running when I took my foot off. After a few tries, the car made a slight puff noise. Now it will run, but I'm sure this will happen again. Someone mentioned fuel pump, fuel filter or some GPR(?) valve.
Mar 13, 2010 at 11:19 AM
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RASMATAZ
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Hi blondiebeegirl, Welcome to 2carpros and TY for the donation

Check the fuel pressure if its within specs if okay Clean out the idle air control valve and EGR and PCV valves then test the throttle positon and manifold absolute pressure sensors
Mar 13, 2010 at 1:16 PM
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AMRAAM35
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sounds like you may abe running too lean. any engine codes? this could be caused by a problem with fuel system as descirbed in the other post, or it could be caused by too much air entering the system. Check the intake and vaccum system for leaks. Check to make sure you are getting a spark at all your plugs.
Mar 14, 2010 at 3:15 PM
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