Question about 1998 Pontiac Grand Prix

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When you take your foot off the excelerator the car dies. Can't seem to find the problem.

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  • Anonymous May 12, 2010

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There are 2 things that usually case a car to die after taking your foot off the gas.

1. A broken vacuum hose / line / serious vacuum leak in a gasket or manifold.
or
2. An EGR valve that is sticking open due to carbon deposit buildup inside the passages of the valve.

There can be other causes but these are the 2 most common.

Thanks for using FixYa.
Kelly

Posted on May 13, 2010

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  • Master
  • 2,309 Answers

Have a look at the throttle position sensor, iac(idle air controler and the egr valve

Posted on May 12, 2010

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Posted on Jan 02, 2017

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SOURCE: Car pulls to the left

check wheel bearing, king pin, alingment, stering ball joint.

Posted on Oct 23, 2008

  • 58 Answers

SOURCE: 2004 buick lesabre with new battery will start

seems a simple job a restricted throttle body, just have to remove it spray some injector cleaner and done .notice there is a small hole that get clogged for which the engine get it air to idle clean it that should do it.

Posted on Feb 23, 2010

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