hey whats up, im kinda new here, i tried to seach but nothing helped me. ok here is my problem, my car starts up, and when it is cold it idles steady at about 950rpm
( i know its a little high, but o well). but then when my car warms up the idle starts to jump, like somewhat bad, but it stops the second i put my a/c on, and will start again if i turn it off, please help, thanks in advance for you help

 

It's probably the BAC (bypass air control) valve, especially if it runs fine when put into gear. I've had to replace this thing on both my Rx-7s...

 

 

thanks alot, where can get a BAC valve, and how much are they

 

New - dealership. $$$

Used - try www.rx7world.com or pm hypntyz7 or Icemark (one of them may have a spare kicking around.)

Don't know what a fair price is - I've never bought a used one. Don't pay more than $300.

 

well im going to try and fix it first, since im only 15 and i dont have 300 bucks to blow on a part that isnt absolutly needed. but i will try to look for one around here, if any1 has one please tell me. thank you very much

 

I was kidding about the $300 part. See the winking smilie? PM those guys. I'm certain it'll be tens of dollars at most.

 

oh ok, i get it