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The heater control valve in a Mustang is located within the engine. It is right in the heater's core and where the coolant is located.
The heater control valve is located on the front part of engine compartment. Its next to the radiator on the passenger side.
The idle air control valve is located next to the throttle body. It is connected to the air cleaner hose on the top of the engine.
The 1989 Chevrolet S 10 pickup idle control valve is located on the side of the engine. You will find the valve below the fuel injector pump.
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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.
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http://www.ecklerscorvette.com/corvette-hot-water-control-valve-for-cars-with-air-conditioning-1986-1987.html
It is located behind the bulkhead, accessible from the engine bay.
The idle air control valve is also known as the idle speed valve. On a 1999 1.6 literÊMazda Protege, it is located at next to the throttle body.Ê
It's the pcv valve (pressure control valve), and it's located on top of the engine block to the right hand side, can't miss it.
On the throttle body