Heat/AC not working properly

Tiny
KLAWSON
  • MEMBER
  • 2014 DODGE CHARGER
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 55,000 MILES
I have the car listed above that blows only hot air once turned on. You can turn the air temperature all the way down and it stays hot. It does the same thing with the A/C. You can’t turn up the heat. The blower will go up and down, just not the heat and cool.
Saturday, January 9th, 2021 AT 11:19 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The blend door actuator sounds like it is frozen and not working in either direction. This is a very common failure for this issue.

https://www.2carpros.com/articles/replace-blend-door-motor

I attached the procedure for you for replacement with pictures of the location of the actuators.

Roy

REMOVAL

WARNING:
Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions may result in accidental airbag deployment and possible serious or fatal injury.

NOTE:
The Dual Zone heating and A/C system has two blend door actuators, one for the driver side and one for the passenger side.

LEFT SIDE

imageOpen In New TabZoom/Print

1. Disconnect and isolate the negative battery cable.

2. Remove the left side instrument panel silencer See: Dashboard / Instrument Panel > Removal and Replacement > Silencer Panel - Removal.

3. Remove the two screws (4) that secure the blend door actuator (12) to the left side of the HVAC air distribution housing (3).

4. Remove the blend door actuator from the air distribution housing and disconnect the HVAC wire harness connector (2) and remove the actuator from the vehicle.

RIGHT SIDE

imageOpen In New TabZoom/Print

1. Disconnect and isolate the negative battery cable.

2. Remove the right side instrument panel silencer See: Dashboard / Instrument Panel > Removal and Replacement > Silencer Panel - Removal.

3. Remove the glove box and the glove box trim panel from the instrument panel See: Glove Compartment > Removal and Replacement > Instrument Panel Glove Box - Removal.

4. Remove the two screws (1) that secure the blend door actuator (4) to the right side of the HVAC air distribution housing (3).

5. Remove the blend door actuator from the air distribution housing and disconnect the HVAC wire harness connector (2) and remove the actuator from the vehicle.
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Saturday, January 9th, 2021 AT 11:42 AM

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