The heater control valve is under the hood on the passengers side of the motor and is located in one of the two garden size heater hoses entering the firewall and it is connected to a vacuum line which causes it to function. If. you want a picture go to ORielly.com and enter a search - it will give you a picture. The web site is http://www.oreillyauto.com/EW3/HomePage.do and then you will enter your information on the vehicle and search for heater control valve.
It does not have a heater control valve.It does not have a heater control valve.
On a 1999 Mazda B3000, the PCV valve is in one of two places, depending on the engine. On SOHC 4-cylinder engines, the PCV valve is mounted on the oil separator on the left side of the engine. On DOHC 4-cylinder engines, the valve is behind the coolant bypass hose..
Where is the the heater control valve??
where is the heater control valve
The heater control valve is used to shut off hot coolant from entering the core when the heater is in the off position. A heater control valve can be actuated by either a vacuum line or a cable from the vacuum heater control valve to the heater core. This hose should be warm; if not the heater control valve is stuck and needs to be replaced
Remove the heater control valve and replace it.
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