You can't, It is not adjustable. The idle is controlled by the idle speed control solidnold that is screewed into the left side of the throttle body. It may need to be removed and cleaned.
You don't. The ECM (Engine Control Module) maintains the correct idle speed. If the idle is out of control you probably have a vacuum leak.
No it does not.
There is no adjustment to my knowledge.
You don't, it is done by the ECM (Engine Control Module).
May be computer controlled and not adjustable
There is no idle adjustment. The idle is adjusted electronically by the ecm. If you have a problem with the idle you may have other issues like a vacuum leak.
There is no idle adjustment. The idle is controlled by the ECM. You may have vacuum leaks causing incorrect idle speed. The gasket between the throttle body and the intake manifold was known to blow out and cause a vacuum leak.
How do you adjust the emergency brake on your 2001 S10 Chevy?
Yes.
To adjust the idle on a 1995 Chevrolet S10 with a 2.2 liter engine, locate the Idle Air Control (IAC) valve, which is usually located on or near the throttle body. Use a flathead screwdriver to turn the adjustment screw on the IAC valve to increase or decrease the idle speed. Make small adjustments and test the idle speed by running the engine to ensure it is at the desired RPM.
The idle sensor on a 1991 S10 4.3 can be located at the engine bay.
Check to make sure the EGR valve is operating properly. BTW, that's different than the PCV valve so don't get them mixed up.