1994 Pontiac Grand Prix stalls while driving

Tiny
RIGHTONE
  • MEMBER
  • 1994 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
The car has been parked for like 6 or 7 years, Replaced gas tank, fuel filter and gas. The car will run fine at idel. When I start driving will work ok on gas. But trying to hold speed or letting off for a long period(like rolling to a stop ) rpms will drop slowly and end up in a stall, no check engine light, any ideas
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Monday, October 4th, 2010 AT 9:33 AM

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Tiny
WRENCHTECH
  • EXPERT
You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Monday, October 4th, 2010 AT 10:25 AM

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