2001 Chevy Lumina surging

2001 CHEVROLET LUMINA
198,000 MILES • 6 CYL • FWD • AUTOMATIC
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WORF55381
  • MEMBER
  • 1 POST
car startrs hrd need to give it gas after car warms up it surges 500 to 1500 in park or nutral and will die when at a light or slow rpm 1200
Jan 21, 2009 at 11:55 PM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Hello, If you open the throttle a little during cranking, your bypassing the iac system, I can't say it is faulty, just a thought. If you floor the pedal, it may cut off the injectors. Can you check fuel pressure? A vacuum leak or sensor problem might cause a surge.

Can you check for codes? Some of the national brand auto stores will check some codes for free, if you can get it down there.
Jan 22, 2009 at 12:55 AM
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