I am trying to sell my Del Sol, but reciently it has been giving me hell. I stopped driving it about three months ago. Well, after it warms up it starts to idle wierd, by jumping up and down from about 800 to 1500 rpms. I dont know why it decided to do it now, when I drove it I never had any problems with it. Any clue on how to fix this is greatly appreciated!!!

Thanks - Chris

 

Sounds like IAC.... Idle Air Control Valve. It's on the intake manifold. When it's broken, it can't get a good reading of air so it will vary idle.

I'd check that out.