Originally Posted by RangerIDLESat45mphWTF
I will try unplugging the IAC when it surges again, see what happens. Maybe I can just replace that.
I am not quite sure how to do a vacuum test and what does spraying carb clean at the base of the intake and the hoses DO ? What am i looking for there ?
A vacuum test will find if you have any vacuum leaks, but you need a vacuum pump.
Or if you spray carb clean around the hoses going to the intake and the base of the intake and it revs up you have a vacuum leak. But if you had an intake leak large enough where your idle is way way to high you should notice it right away.
And are all the hoses going to the intake pluged in. the brake booster like came off on my grand prix and it idled at like 4000 rpm and i could not stop. Scary moment.