2003 Chevy Suburban Low idle below 500 rpm after warmed up

2003 CHEVROLET SUBURBAN
185,000 MILES • V8 • 2WD • AUTOMATIC
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CASPER1
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  • 2 POSTS
The idle speed is so low that it will shut off at stop signs. Runs okay at start up and the rpm's are around 600 when cold.
May 15, 2008 at 3:31 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
For a start try cleaning out the idle air control valve and check the TPS close and WOT voltages-
May 15, 2008 at 3:51 PM
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CASPER1
  • MEMBER
  • 2 POSTS
The problem was fixed when we had the garage clean the fuel line from the gas tank to the engine. It runs smooth as a kitten nowl
Jun 23, 2008 at 12:31 PM
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