2 times the car idles hi by itself around 3500 now check engine light is on? on 1999 Chevrolet Malibu

2 times in the month ive noticed it idleing high but if i shut car off and restart it seems to be ok this time the check engine light came on and will not shut off?

by in Mishawaka, IN on September 11, 2013
1 answer
ANSWER by on September 11, 2013
scan for codes then we can give you advice and post the codes here