why is it when my camaro is in park it revs by it self

 

Gremlins? :-D

Sounds like something is stuck or sensor is funky -- any codes?

 

nah no codes do u think it could b the egr valve

 

its got a mind of its own...lol

wait are we talking a v6 or lt1?

 

what mods, what motor, when did it start? any ses lights? have u looked to see if any stored trouble codes? check for vacumm leaks.

 

what are the steps 4 the switch 4 radiator

 

How high does it rev?

 

all the way to the govern kicks in

 

wow dude than its probly something in your throttle linkage maybe idle adjustment screw. thats the only thing i can think of that would make it do that.

 

Maybe your throttle positioning sensor has gone bad!! I found an easy way to test it with an ohmeter on autorepair.about.com. (Rough Running Caddy article) It may be bad and not give you a code at all according to the article I read.