Mechanics

HOW DO YOU ADJUST FAST IDLE ON MOTOR? IT HAS STARTED TO GO UP TO ALMOST 2800 RPM. VERY FAST

1988 Mazda 929 • 16,000 miles

My car has started to fast idle when cold/first started from 1200 rpm to almost 2800 rpm. How do I resolve?
Avatar
Mike Haley1
January 24, 2012.



Sounds like you have a vacuum leak. A smoke test would confirm. Make sure the throttle body is not sticking. Make sure the idle air control motor is functioning as well.

Roy

ASEMaster6371
Jan 24, 2012.