here's a doozy
as far as I know...there are 2 idle adjustments,

the engine idle, and the a/c idle. (please correct me if I am wrong).

I'd like to adjust it so that the idle doesn't fluctuate so much when the a/c is on. there is another post on this however the guys who answered have conflicting opinions...

is the problem that my engine idle is set too high, or my a/c idle needs to come down?
I guess I want to know the best settings for each idle.
GRACIAS MUCHACHOS!

 

The idle speed should be 800 rpm, measured with the engine warmed up and all electrical accessories off. The adjustment screw is on the front of the throttle body, facing forwards. As for the a/c idle I don't know if it's adjustable, I never had a/c when I had my 3.0 so I didn't have to deal with it.

 

There isn't an idle adjustment for the A/C. There is an idle up valve that is opened when the AC turns on. It draws air from the intake system through on of the two tubes that runs along the front of the intake manifold. It is designed so the idle doesn't drop too much when the AC clicks on.