Drivers side AC vents not blow out cold air

RYANWEYER

MEMBER
2008 DODGE RAM
4.7L
V8
4WD
AUTOMATIC
170,000 MILES

Having a problem with my air conditioning. I am getting cold air from the two passenger side vents but the air coming out of the driver side vents is not cold. I am getting some cool air but it is definitely not cold like the pass side. I have recently added coolant to the system still having the same problem. Any idea what could be wrong or where to start looking to fix the problem?

Monday, July 2nd, 2018 AT 12:50 PM

1 Reply

DANNY L

MECHANIC
5,648 POSTS

Hello, I am Danny.

It sounds like the problem you are having is with the blend door actuator on the HVAC system. It acts as a electric motor to open/close a door to route airflow into the vents. I have attached a picture (actuator is number 1) and a tutorial about how to replace and its function. The HVAC unit is located under the dash on passenger side. There are a few variances between a single and dual zone system but the actuator is the same. Hope this helps and feel free to ask any questions.
Danny-

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

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