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1991 Pontiac Grand Prix dies out while driving

Tiny
TONYA111
  • MEMBER
  • 1991 PONTIAC GRAND PRIX
Engine problem
1991 Pontiac Grand Prix Engine Size unknown Wheel Drive Type unknown Automatic 100, 00 miles

recently my car has been dying out while driving. Autozone says it might be the egr valve needs to be replaced. The car is sitting but it starts after awhile when my father in law messes with the vacuum hoses sometimes the car will idle back down and be fine for a little while. Could this be the egr valve?
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Thursday, December 27th, 2007 AT 8:53 AM

2 Replies

Tiny
TOPGUNS08
  • MEMBER
  • 2 POSTS
My car is doin the exact same thing and someone told me that it might be too much air goin into the engine through the vacuum hose and causing an uneven gas/air mix.

Try finding a hose where too much air might b goin through to the engine
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Monday, February 23rd, 2009 AT 1:42 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
EGR is not supposed to flow at idle or low RPM. It will cause the engine to die if excessive flow happens.

If EGR is connected to vacuum line, check the hose for cracks.

Before replacing, remove and clean the EGR pintle and base.
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Monday, February 23rd, 2009 AT 8:08 AM

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