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2010 Challenger heater not getting hot.

27K views 8 replies 5 participants last post by  customaudioman 
#1 ·
My 2010 SE Challengers heater just blows out cold air.Here’s what I checked so far.
Checked all 3 door actuators and they all 3 are working
Checked both the in and out heater core hoses and they both were warm or hot after the car came up to normal running temp
Car comes up to normal temp like always on the gauge
Antifreeze is at the level it should be
The control switch cycles from dash to vent to floor like it should
I even pulled the blower motor out and moved the half moon door closed and tried no heat and then put it back were it was and still no heat.I can’t think of anything else to try.I’d appreciate any help!
Thanks!
 
#2 ·
You said it seems like the three actuators work but did you check to see if they actually spin or open and close the doors? The female end of the hot cold blend door may be broken off from the door and be just spinning.

The half moon is just outside or inside air,
The driver side one is the one you need to worry about...also is this a manual or auto air control? Either way resistor in the tunnel may have failed as well. It's just two screws and it slides out.
 
#3 ·
You said it seems like the three actuators work but did you check to see if they actually spin or open and close the doors? The female end of the hot cold blend door may be broken off from the door and be just spinning.

The half moon is just outside or inside air,
The driver side one is the one you need to worry about...also is this a manual or auto air control? Either way resistor in the tunnel may have failed as well. It's just two screws and it slides out.
It's manual control.When you say the driver side one do you mean the 1 closest to the column or the one closer to the heater control?When you cycle the hot and cold you can hear the sound like the door is opening.Can you turn the hot/cold air blind door with a small screw driver if the female end is broken off?Were is the resistor located?Thanks for your time and help!
 
#4 ·
Off the top of my head I don't remember which actuator is the right one, I wouldn't risk manually twisting with a screwdriver and risk breaking it, you would know if it just spun or was firm and still seemed like it was attached merely by hand.

The resistor is located on the passenger side on the vent tunneling that leans from that "half moon" area and has a wiring harness going to it so you shouldn't miss it.
 
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