Where is the heater control valve located on a 1998 prizm?
Locating on a 1998 prizm - fine idea
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
Antifreeze/Coolant Cooling Fan Pressure Cap Coolant Reservoir Heater Core Heater Control Valve Engine Heater HVAC Hoses & Valves HVAC Thermostat Description: A heater control valve may be located in one of the heater hoses to regulate coolant flow to the heater core. The valve is usually vacuum-controlled, which is operated by controls on the dash. Purpose: The valve is used help control heater output. Maintenance Tips/Suggestions: Insufficient heat, or heat that can�t be turned off…
The heater control valve motor is located below the dash on the passenger side. First remove the glove box, then the lower trim panel. Before removing the lower trim panal remove the center trim around the radio and A/C controls. After removing the lower trim panel, the heater control valve motor is on the left side underneath the automatic compressor controller, connected to the heater control unit.