hello everyone.

i need some help on this one.

when i'm at idle and press then relese the brake pedal my rpm's go up 200-300 rpms more then my idle rpm. what can cause this?

i'm gonna change my one way valve right now. and see if it helps.

what you guys think?


thanks

 

my car does that too....but only at idle. I always thought it was the brake booster or something.

Bump for a definite answer

 

same for me.. it's normal. no need to worry

 

brake booster the vacumm hose that go from the im to the brake booster

 

mine does this too