I found mine by locating where all the steam was coming out when the plastic Valve broke....I have a Dodge Ram Van, left side, behind battery is a black box, coming out of that box are two 5/8" dia hoses, top hose about 10-12" away is a control valve with a vacuum actuator attached to it.
I am currently looking for a replacement, cant find one online
A 1999 Dodge Ram does not have a water control valve.
99 Durango doesn't have a Heater Control Valve, It only has a thermostat
yes
The heater on a 1999 Caravan doesn't have a heater valve. The temp is regulated with a blend air door that is controlled by the body computer and climate controll head.
near the fire wall where the heater hoses enter
There is a heater control valve on the 1999 Ford Ranger. There is no thermal vacuum valve on this year of the vehicle.
doesnt have one
The "Related Question" below is an extensive discussion on the 1999-2003 temperature control valve / heater control valve. It is likely the information will be similar to the 1997 / 1998 Windstar
The cirrus does not use a heater valve. The cabin temperature is controlled with the an airflow controlling door inside the dash.
There is no heater control valve fitted on a Ford Escort. The heater matrix is directly connected to the engine's cooling system. To reach the heater matrix, you should remove all the facia unfortunately... :(
There is no heater control valve on this generation of dodges like there used to be... the water flows constantly through the heater valve.. the only control is a trap door that allows cab air to be run through the heater core and is controlled by a vacuum solenoid in the heater box.. the temp control is also vacuum operated but be sure to check the vacuum supply line coming in from the engine.... it has a check valve in it that can be keeping the controls from getting enough vacuum to operate properly.. if you don't have a mighty vac just get one of those packs of barbed vacuum fittings from your local shucks and bypass the valve temporarily and see if you get heat... hope this helps
its screwed in the right hand side of the engine