My cutlass was doing the same thing.. well is as far as the RPM's shooting up like crazy - in fact when idling it jumps up and down - so I'm curious as to what others have to tell you.. but two different mechanics told me two different things - (1) said it was the air intake manifold? And another said it was I'm having a spark plug wire mismatch... I know that doesn't help you in the least... but I'd like to hear what other's have to say as well. GL!
