1998 Chevy Lumina stumbling at stop lites

1998 CHEVROLET LUMINA
145,000 MILES • 6 CYL • 2WD • AUTOMATIC
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RONTHOMPSON
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  • 2 POSTS
Had a question out about my 98umina and paid money for a reply and got no answer.... here is the questioon again.... after car is warmed up... I stop at the stop lights in our town and the engine idle will stumble while we are setting at the light ... what is causing this.... Ron Thompson
Apr 12, 2010 at 11:11 AM
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LEGITIMATE007
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hi Ron, sorry about the no response, and thank you for the donation, the stumbling can be caused by a couple of things, first in mind would be the idle air control valve, then a possible mapp sensor fault, I would also do a thorough cleaning of the throttle body and throttle plate and I will show you how to do that in the next post. another possibility could be a fuel pressure regulator problem, but not likely in this case. If there is a check engine light on, bring it to autozone and have it scanned(free). and bring the codes back to me, if there arent anycodes, then we should be ok with those things I told you to check.
Apr 13, 2010 at 2:43 AM
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LEGITIMATE007
  • ✓Experienced Mechanic
  • 5,121 POSTS
https://www.2carpros.com/how_to/how_to_tune_up.htm
Apr 13, 2010 at 2:44 AM
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