changed hoses an idler air control valve as sugested plus throttle position sensor

Asked by Nov 17, 2016 at 02:11 PM about the 1997 Pontiac Firebird Trans Am

Question type: Maintenance & Repair

idle to, fast

4 Answers

107,925

A couple of things to look at , check the PCV valve, check the PCV hose for a vac leak. On the throttle if you have an adjustment screw turn the idle screw back out till it touches the arm. The car will set its own base idle 850-900 rpm untill it gets to the point where the blades are open enough that it has to completely close the iac.

1 of 1 people found this helpful.

has an piece going in to the valve cover no p v c you can not adjust stop for throttle

107,925

Try giving the throttle body a really good cleaning with CRC throttle body cleaner

have done this 2 times have thought about getting a new one it seems like I am replacing so much no change in idle the guy I got this car from had the converters taken off do you think I should put new ones back on the car has had 1200 miles in 10 years

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