Question about 2004 Mitsubishi Galant
I’m not getting any heat blowing when I turn the heat control potentiometer to hot. When I turn the knob to the cold position the A/C works fine. I removed the glove box to examine the operation of the Air Mixing Damper Control Motor. When I turn the knob from cold to hot, the Control Motor rotates from the Max Cool position to the Max Hot position just like it is supposed to. I turned the temperature select knob back and forth and the Control Motor reacts correspondingly.
The heater hose connections at the damper control unit are very hot to the touch when the engine is running so the hot water must be flowing OK
So if the Air Mixing Damper Control Motor operates correctly from Max Cool to Max Hot and the hot water is flowing in and out, then what else could be causing no heat to blow?
The hot water hose presenting at either end of the heater core doesn't mean coolant flowing through it. It could be stagnant and it doesn't effect you coolant since it is just a branch off.
1- One thing could happen is that heater core is clogged up.
2- The other thing is that there is a valve control temperature knob to allow high or low of hot coolant flowing through the heater core per desired temperature is not operated.
Check these out.
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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