IRREGULAR IDLE

2002 GMC Yukon

Tiny

topper07

February, 23, 2011 AT 3:14 AM

2002 GMC Yukon, 5.3, When the ambient temperature drops below freezing my idle is very irregular, almost dying, until the motor warms up. When the ambient temperature is higher, the idle is not as irregular. Any suggestions?

FOUND 1294 RELATED QUESTIONS

Dies On Idle

22 ANSWERS
8 IMAGES

4 Answers

Tiny

PROTECH1980

February, 23, 2011 AT 3:39 AM

Any diagnostic trouble codes? Noted problems with this engines intake gaskets leaking vaccum causing lean condition/misfire codes. Affected greatly by tempature/ also try cleaning throttle plate with appropriate cleaner and brush to eliminate dirty throttle bore.

Tiny

topper07

February, 23, 2011 AT 3:48 AM

Only trouble code was random misfire at one point but I changed plugs and haven't had it since. The service engine soon light would come on but not stay on

Tiny

PROTECH1980

February, 23, 2011 AT 3:51 AM

Check the intake gasket for possible vaccum leak.

Tiny

topper07

February, 23, 2011 AT 5:09 AM

I may have mispoke previously, initially the vehicle idles high, then when it kicks down, that is the point in which it begins to idle irregularly

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