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1997 Pontiac Grand Am

Tiny
AMINOR
  • MEMBER
  • 1997 PONTIAC GRAND AM
1997 Pontiac Grand Am 140000 miles

when I idle my car, the rpms bounce from 1 to 3 I have to constantly press the gas so it doesnt stall. It will either do that or when I start it the engine runs to about 6 rpm. Anyone know what could cause this?
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Thursday, August 19th, 2010 AT 10:21 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Make sure you check for and eliminate any vacuum leaks first.
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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Friday, August 20th, 2010 AT 4:47 AM

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