2003 Chevy Suburban Low idle below 500 RPM after warmed up

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

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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2003 Chevy Suburban Low idle below 500 RPM after warmed up

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