1998 Chevy Lumina stumbling at stop lites

Tiny
RONTHOMPSON
  • MEMBER
  • 1998 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
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
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Monday, April 12th, 2010 AT 6:11 PM

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Tiny
LEGITIMATE007
  • EXPERT
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.
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Tuesday, April 13th, 2010 AT 9:43 AM
Tiny
LEGITIMATE007
  • EXPERT
http://www.2carpros.com/how_to/how_to_tune_up.htm
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Tuesday, April 13th, 2010 AT 9:44 AM

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