2002 GMC Yukon Repair Question
Topics covered: Engine, Gas, Trouble code.
Mileage: No information provided.
Mileage: No information provided.
Asked on February 23, 2011
Irregular Idle
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?
Asked by topper07Answer
Replied on February 23, 2011
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.
Replied on February 23, 2011
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
Replied on February 23, 2011
Check the intake gasket for possible vaccum leak.
Replied on February 23, 2011
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