1999 Pontiac Grand Prix Repair Question
Asked on March 6, 2008
1999 Pontiac Grand Prix EGR Valve
ok i turn on my car sometimes and my car does not idle right the idle jumps around and then when i hit the gas then idle levels off and evrything is off. sometimes the car is hard to start and ideling is rough.
My check engine light came on and code said egr valve stuck open.
Asked by bigpimpin5oAnswer
Replied on March 6, 2008
Is this 3.1 or 3.8 ??????? When the EGR stays open due to carbon it dilutes the A/F mix causing it to idle erratically.
Replied on March 7, 2008
you think i should change it cause i tried to clean it and i changed the gasket and still samne thing
Replied on March 7, 2008
you can try to clean it with a small amount of carb cleaner, but i highly suggest replacing the egr valve.
Replied on March 7, 2008
When at idle and EGR disconnected does it idle okay-if you replace it and it continues-check the wiring and the PCM.
Replied on January 18, 2010
I have the same problem with my car. Its a 2001 Pontiac Grand Prix GT. I disconnected the EGR after the car was started and it did not help anything. Does this still mean it could be the EGR?