Though what you said is very viable, 5000 rpm isnt a "high idle" my 86 redlined/rev limited at 5500. So this isnt a computer problem.
Even if the IAC was completely ripped out, the tps was bogus, and the o2 sensor was plotting to blow your engine, you couldnt race the car to 5000. The butterfly valve has to be cocked WAY open. Or the throttle body is completely diseengaged from the intake manifold.
I would suggest taking your Throttle body off and inspecting thoroughly for any holes. Also, the throttle return spring, which closes the throttle back down needs to be correct. If there is not spring, the butterfly valve will try and open all the way and not come back.
I would not advise running the car at all until this is solved. Youll end up really hurting the motor at 5k RPMs
Friday, September 19th, 2008 AT 12:42 PM