jumping idle when warmed up

[BDSax]

well im pretty sure its not a vacumm leak. i did the stomp test and i get 1216 (throttle position switch) any way i can test it? i dont want to buy a new one and not have that be it as its like $75

[Van Westervelt]

Did you clean the ICV? Mine was a little sticky, after I cleaned it, no jumping around.

[BDSax]

ill have to double check. did it only happen when the car warmed up?

[whiltebeitel]

I've had this happen twice. It randomly went away, and I think it was because I wrung it out a little bit that the idle returned to normal.

[BDSax]

I've had this happen twice. It randomly went away, and I think it was because I wrung it out a little bit that the idle returned to normal.

explain??

[FredK]

wrung out = driving it hard

[whiltebeitel]

Yes. Well, most specifically, I start the car (warmed up) and the idle bounced from 1k to 2k, it was like it was revving to race someone, but I was entirely off the throttle. So I try restarting the car, deos no good. I try accerating in a low gear to ~5k, and after a few minutes of this, it stops. It put it in first, no gas, it rolls forward and jerks when it revs. Strange sh*t.

[BDSax]

sounds like we have the same problem. if I'm idleing at a light and release the clutch real quick it will go away. I'll have to give it hell when my exhaust is done

[whiltebeitel]

I'm going to dig in there eentaully and see what is dirty, and see if that makes a difference.

[BDSax]

well, i took the ICV out. i thought i cleaned it but it wouldnt even move when i wiggled my hand. i have to pry it with a flat head screw driver to break it free. no more jumping idle!

Now it seems like its idling to low. could that be because there is no back pressure from having no exhasut yet?

[matt]

How low is too low? It should be pretty happy around 700RPM.

[BDSax]

not sure, got late and my light doesnt work and my RPM jumps around. ill find out more tomorrow when i go get my exhaust done.