rough idle

Asked by krisjon88 Jan 24, 2017 at 02:42 PM about the 2003 Chevrolet Suburban 1500 LS 4WD

Question type: Maintenance & Repair

Rough idle when in gear or park. New plugs, wires,
fuel pressure sensor. Check engine light on &
sometimes blinks.

1 Answer
223,885

Rowefast answered 7 years ago

Try cleaning the Mass Air Flow Sensor with electrical cleaner and also clean the throttle plate in the throttle body. May want to look at the spark plugs also.

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