The Evap Canister Contro; Valve is underneath the car by the tail pipe it located right next to the evap canister itself. They often fail if the get clogged with carbon from the Evap Canister when it goes bad. Make sure that you disconnect this valve prior to putting air in the syatem to blow out any carbon or you will break it. Disconnect the control valve tubes in and out and blow air from the engine compartment back and you will probably see alot of carbon, that is the most common problem. Make sure you gently shake all the carbon out of the valve, DO NOT USE AIR, and then put it all together. Just remember once you see carbon, any carbon anywhere there's a good chance you'll have to clean out your whole EVAP System.
Directly below the throttle body.
the emc is shot out by a faulty IAC VALVE .
Locate heater control valve in a 2001 Honda civic
Check your EGR valve
heater control valve located on 2001 gmc jimmy 4.3l
"Where is the heater controll valve on a 2001 Chevy S-10 controll Valve? "
A 2001 Chrysler Town and Country does not have a water control valve in the heater system. The cabin temperature is controlled with electric motors on airflow control doors.
The idle air control valve on a Volvo S80 is located on the intake manifold. The valve controls the rate at which the engine holds an idle.
The idle air control valve controls the neutral idle of the 2001 Honda Accord. A faulty idle control valve leads to an erratic idle. To replace it first locate the valve on the intake manifold. Unplug the unit and remove the three bolts holding it to the manifold.
Attached to the intake manifold
Open the hood of the car and find the idle air control valve. The valve is located on the Gran Marquis' throttle body. The idle air control is a cylinder with a wire connector plugged into it. If needed, refer to your repair manual for an exact diagram. Read more: How to Clean the Idle Air Control Valve in a 2001 Grand Marquis | eHow.com http://www.ehow.com/how_7649344_clean-valve-2001-grand-marquis.html#ixzz1eqCpBmRx
Some later models, 2001 onwards, don't have an idle control valve. The function is designed into the Electronic Throttle.