XR7 Dave said:
And no, I'm not sure why you can't just use the throttle stop to set base idle speed other than the fact that doing so will make the EEC think that you are opening the throttle. I've done it both ways before and it seems to work.
If you use the set screw connected to the butterfly to adjust idle.
you will no longer have a voltage set of .95.. If you use this screw
to raise idle,you will also be raising the votage of the TPS.
The reason why I used the butterfly screw for adjustment of the idle.
Was because I could not break loose the air-bleed set screw located
above the IAC.To get it to be adjustable.
David D. is right, using the butterfly set screw will work,but it
raises the TPS voltage.This will make the EEC think the throttle
is slightly open.
This is how I have adjusted the set screw to make sure the butterfly
plate is closed.You do this before setting the TPS voltage.
1.Turn screw until it no longer is touching the stop on the throttle
cable arm that connected to the butterfly plate.
2.Place a peice of notebook paper between the screw & throttle
cable arm stop.
3.Turn screw until you have drag on the peice of paper while tring
to pull the peice of paper out from between the stop and screw.
If the paper pulls out with slight drag.You have the throttle butterfly
plate properly adjusted.
4.Then you can start the adjustment of the TPS voltage to .95..
5.Then you use the IAC air bleed screw that you ask about in your
first post. To adjust THE IDLE on your motor.
I was never able to follow DR. Freds instruction and get my car to idle
right.
Randy