So i got this car around april of last year and it has been sitting in my backyard. Ive been repairing it little by little. I noticed when i turn it on it it idles at about 1500 to 2000 rpm and stays that high for about ten minutes, also when i hit the gas pedal it hesitates and takes a second to rev up. Any ideas of what could be my problem? Any help is appreciated.

 

check the timeing and IAC. the IAC have been known to be the answer in this problem. this also could be due to a vacume leak.

 

The hesitation sounds like a faulty accelerator pump to me.

 

I would check the tps and the throttle position because mine would idle around 1450 when it was warm and i found out the screw that stops the throttle from bottoming out was screwed all the way out and reset it to a length that would keep a stable rpm with all my accessories running. If that checks out good check the vacuum lines.

 

Hey OP, alitlle info needed! Like year, we can only guess if its carbed or not.