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The heater valve actuator for a 2003 Mitsubishi Galant is typically located within the engine compartment, near the firewall, where the heater core is situated. It is often mounted on or near the heater control valve, which regulates the flow of coolant to the heater core. For easier access, you may need to remove certain components or covers in the engine bay. Always consult the vehicle's service manual for specific details and diagrams.
the heater control has a thermostat for the heater only. that thermostat needs replacing
Replace the heater control valve motor, a dealer part, costs around $166.00.ish
Check heatertreater.net for diagnostic information and a fix for the blend door/actuator problems endemic to this model.
Not a easy job. The dash needs to be removed to gain access to the temp actuator. To many steps to list here. Recommend purchasing a shop manual for that vehicle if you intend on replacing the actuator yourself.
I had the same problem with my 97 galant. There was air in the heater core.
the temperature control actuator is on top of the heater box under the dash. you have to remove the dash to get at it. a repair manuual will show what screws to remove
To find and replace the climate control actuator on a 2003 GMC Envoy, first, locate the actuator, which is usually situated behind the dashboard near the heater core. Remove the necessary panels and screws to access the actuator. Disconnect the electrical connector and unbolt the actuator from its mount. Replace it with a new actuator, reassemble the components, and ensure everything is securely fastened before testing the climate control system.
The blend door actuator in a 2001 Mitsubishi Galant is typically located behind the dashboard, near the heater core. To access it, you'll generally need to remove the lower dash panel and possibly the center console. The actuator is often mounted on the HVAC housing, and you may need to disconnect wiring and screws to remove it for replacement or inspection. Always consult your vehicle's service manual for specific instructions and diagrams.
the heater core for a 2002 Mitsubishi Galant is located behind the fire wall under the dashbord in the center the heater core for a 2002 Mitsubishi Galant is located behind the fire wall under the dashbord in the center
Sounds like you have a problem with the air door actuator that switches it from hot to cold. That car shouldn't have a heater control valve, instead it uses an actuator that moves a door which directs the air flow to either flow through the heater core or bypass it. If coolant is circulating through the heater core, and nothing is stopping the fins on the core up, then you have a problem with either the actuator or the door itself. When you switch it from hot to cold do you hear something moving on the passenger side of the dash? If not, it is probably the actuator, or it could even be the control panel.
do you mean the temperature control valve actuator?--- the little motor that changes from hot to cold you have to take off the heater case cover under the dash on the passenger side-- 3 screws. in the center, just behind the console, is where you will find the actuator-- 2 screws and one elec plug