It's deep in the engine. You'll have to remove the top intake air and work your way down from there.
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.
under the hood, on the fire wall behind the engine where the two hoses are. one of them as a valve on it.
Locate heater control valve in a 2001 Honda civic
On a 2001 Ford Ranger : In the Power Distribution Box ( which is " live " ) located in the engine compartment , on the drivers side ( the # 54 relay is the relay for the Powertrain Control Module / PCM )
Only if you have the 2.5 liter four cylinder engine in a 2001 Ford Ranger . ( that engine has a timing BELT )
Hey Vince==It is in the valve cover. GoodluckJoe
You don't the cam runs with a chain on the Duratech engines.
heater control valve located on 2001 gmc jimmy 4.3l
check for an emmission control system problem such as the heated cannister purge valve
Should be right by the throttle body.
You need to check the idle control valve, and the air filter.
It is located under the intake manifold between the engine and the firewall.