2002 Pontiac Sunfire Repair Question
Topics covered: Gas, Idle air control valve, Vacuum leak.
Mileage: No information provided.
Mileage: No information provided.
Asked on January 28, 2013
Pontiac Sunfire Gas Problem
Whats It mean when you start your car and It starts to warm up and It starts surging really high and acts Like you have the foot on the gas pedal and you don't ?
Asked by (pending member)Answer
Replied on January 28, 2013
Check for vacuum leaks and the IAC (idle air control valve)
Replied on January 28, 2013
Idle air control valve. Also check the valve cover hose that goes to the air cleaner box. (Resinator duct) The nipple might have broken off, causing a vacuum leak. Is that an echo tech engine? My buddy has a cavalier same problem I solved it in 5 minutes. By threading in a 1/2" piece of pipe and reconnecting the hose. He said the car never ran that good and gets way better gas mileage. It was probably like that when he bought it. Lol
Replied on January 28, 2013
The hose that goes from the valve cover to the air box is the crank case breather there is no vacuum coming off that hose to cause a high idle.