Rough idle shaking and stalling on corners

RAEANNE

MEMBER
1999 PONTIAC GRAND AM
4 CYL
FWD
AUTOMATIC
185,000 MILES

My 1999 pontiac grand am is stalling on corners and at lights. The rpm just drops and it dies. I just had the water pump replaced could it be out of time?
the idle becomes rough and the front end shakes while it is at a traffic light in order to avoid the stall you must gas it very quick after taking your foot off the brake. It stalls on most corners at very slow speeds

3 Replies

WRENCHTECH

MECHANIC
20,757 POSTS

You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and 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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Saturday, July 16th, 2011 AT 11:34 PM

RAEANNE

MEMBER
4 POSTS

Thank you guys I will try this, but I just paid over 300 for a tune up in hopes of eliminating this problem, don't you think they should have brought it to my attention

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Sunday, July 17th, 2011 AT 11:22 AM

RAEANNE

MEMBER
4 POSTS

Ok. I replaced this and seemed to help some. The stalling and shaking is not as bad but I still do not think it is normal. I put it in neutural and gave it some juice. Just a quick push on the pedal and it bucked and died

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