Heater not working?

2006 MITSUBISHI GALANT
209,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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MK7CASEY
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  • 17 POSTS
Car has no heat, temperature control works, A/C works, but when turning the temperature knob to hot it doesn’t blow hot air, just ambient temperature. Mode selectors work, floor etc.
Jul 15, 2022 at 9:14 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

This could be a couple of different things. First, check the coolant level in the engine. When the engine is cold, remove the radiator cap and make sure it is full. Don't just depend on the reservoir.

If that is full, then suspect the air mixing damper control motor has failed or something has come apart.

If you look below, I attached the directions for inspecting this component. The electric actuator is what moves the air mix door allowing either heat or AC to enter the vehicle. Take a look through the directions and let me know if you are comfortable performing them or if I can help in any way.

Take care,

Joe

See pics below.
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Jul 16, 2022 at 5:50 PM
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MK7CASEY
  • MEMBER
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Not sure where to locate this component. Do I need to take apart the dashboard apart to get access to it?
Jul 16, 2022 at 7:40 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

If I recall correctly, it should be under the dash to the left of the center. You should be able to access it without taking things apart.

Let me know if I can help.

Joe

Jul 16, 2022 at 9:22 PM