I am having big time problems with my '95 eclipse. It is idleing in the neighborhood of 4000 to 5000 rpm when I start it up.
I have tried replacing the Throttle control switch, the throttle position sensor and the Intake air temperature sensor none of which fixed the problem does anyone have any other insight as to what else it could possible be?

 

Im guessing then you tries adjusting the Biss screw as much as possible already. What did you do to the car when it started any mods or anything.

 

ya I bet a nickle its the biss

 

Well Guys first of all thamks for the responses, but it is not the BISS screw. As for any MODs i didn't have anything done.

 

when you drive how well does it work? Liek does it fix itsself?

 

It doesn't drive well at all, as a matter of fact my power steering and power brakes have also lost power.

 

It doesn't drive well at all, as a matter of fact my power steering and power brakes have also lost power. Another thing is that maybe after awhile the engine will kind of settle down but not really, it then will idle irregularly bouncing from around 1500 to 3000 rpm. Not a constant rev but and up and down like it is trying to find the right idle.

 

maybe check the MAF or maybe check for leaks around the intake manifold. These are jsut suggestions. Not exactly sure what it could be

 

Idle air control valve didnt do it? I would have put my money on that.