hello
can any tell me what's wrong with my car. i have a 3000gt. evert time i stop the rpm bounce back and fourth 1500 to 2000rpm. i had it check out, had the throttle clean out but still continue to do it . it some time shut off when i stop.

 

I have heard that a loopy idle can be caused by the IAC, idle air controller. It is located on the throttle body. I did a quick search on 3si.org and found lots of problems that may be similar to yours

http://www.3si.org/forum/search.php?...=356417&page=2

There is lots of topics (7 pages) but surely you will be able to figure out if one their problems matches yours.

If you find out it is the problem and you have to replace it......

http://www.stealth316.com/2-isc-iac.htm

here is some instructions. Good luck, let us know if that was the problem or not.