David_K

where is that screw located on the throttle body that controls the idle? my car is idleingreally really really bad.

jdaniel

You may not wanna use that screw to adjust the idle unless you know what you are doing.

You have to unplug the IAC bypass connector, adjust the idle to 500-600 rpms WITH it unplugged and then plug it back in and the idle should be at or about 900 steady. Dont just turn the screw. When you unplug the connector the car will either idle up or idle down and almost die. Adjust it from there.

David_K

HAHA! the IAC was unplugged. Thanx

jdaniel

Sure it was. You knew where the IAC bypass was but not the idle adjustment screw?

David_K

no i found an unplugged sensor

Acer2428

I just backed mine all the way out and let the computer do it...worked like a charm.

jishead

I think if you back that thing off too far then you'll rely on your TB throat and carbon deposits to set the butterfly to home. If you bump it too far in, you'll keep your butterfly ajar and have the equivalent of a vaccuum leak. You ECU will try to compensate via the IAC if you haven't restricted it or unplugged it. I have my IAC restricted to lessen the throttle hang syndrome.

02StanGT

You will just have a higher idle. That won't make you car run like shat like a vacuum leak. A vacuum leak is extra unmetered air, your throttle body being a little open won't make your car possibly run lean, because it metered air.

Fat Nick

I know I need an IAC. My car seems to missfire while driving and idle jumps from 300-900, and cuts off at red lights.

David_K

yeah thats a problem there