Car has bad Idle...

[H.A.R.T 4G63DSM]

Okay heres the story. My car had mad idleing problems, when I would drive and put the clutch in the idle would drop below 750rpms and almost die out. Okay so a bunch of people told me to change the ISC (Idle Speed Control). I did and it idle well but it goes up to 2000rpms when the cars gets warmed up. But when it does idle at 900rpms, it sounds like Im running on 3 cylinders. Pls help.

 

[BOBS90TURBO]

Is it surging or is going up the 2000 and when warm going back down to 900?

I had a bunch of idle probs a few months ago and it ended up being a bad intake manifold gasket, A bad biss screw o-ring gasket, and really fine adjusting the TPS switch.

 

[ThUnDaKaT85]

if your running on 3 cylinders youll feel it, youll be very slugish. check your wires, and plugs. cause it sounds like you probably are running on 3 cylinders

 

[punka44]

Hi BOBS90TURBO, how did you adjusted the TPS switch please? What's are the fine data for this? I have my car in Mitsu servis, but they don't have a data for computer for adjusting my TPS. Thanks.