johnng117

My car drives normal for the first 20min, then after turning off the car and restarting the idle will hunt between 3-4k rpm.
My garage plugs in the STAR to retrieve the codes but there is none. Tried it again and still no fault codes.
Is there anyone out there who could shed some light to this problem.

Items that have been changed within the last month; throttle body, throttle pedal sensor, steering angle sensor.