2003 Chevy Suburban Low idle below 500 RPM after warmed up

Tiny
CASPER1
  • MEMBER
  • 2003 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
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.
Thursday, May 15th, 2008 AT 3:31 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
For a start try cleaning out the idle air control valve and check the TPS close and WOT voltages-
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Thursday, May 15th, 2008 AT 3:51 PM
Tiny
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
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Monday, June 23rd, 2008 AT 12:31 PM

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