It breaks the vacuum in the intake manifold which lets the engine die down to a respectable idle.
"Where is the heater controll valve on a 2001 Chevy S-10 controll Valve? "
No.
No, it does not.
what is the valve settings surposed to be for a 87 s10 chevy pickup 2.8 ci
There is no EGR valve on the 2002 4.3L (code W)
You can tell a bad valve by doing a compression test.
2003 4.3's do not have an egr valve.
There is none.
On the right side valve cover.
how to adjust vavles on 2.2 1998 s10
Horn valve? Please give more info.
If you have such a valve, it was installed as an aftermarket modification. Check with whoever installed it.