Q: No heat on passenger side

asked by on October 25, 2016

I bought this car used and when it got cold I turned on the heat and noticed the passenger side blows cold air out of all vents on right side. The driver side works fine. I read about some kind of device behind the glove box that directs air flow. Any suggestions?

My car has 74500 miles.
My car has an automatic transmission.

Hello. Most of the time this is due to a failure in the blend door motor on the passenger side. It can also be the door itself or a sensor issue but most of the time it is the motor. This is an electrical motor that moves the blend door to adjust the amount of hot or cold air entering the vehicle. When the motor goes bad it sticks in one position. I usually remove enough of the dash to access it so that I can test it as it can be the control module also. If you are going to have this repaired, consider having a technician from YourMechanic come to your home or office to inspect your heating problem and make the necessary repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Burning smell from engine

This vehicle does not tend to have many issues with burning smells coming from the engine. The main one that I run across is oil burning on the engine. This is typically caused by an oil filter or oil plug...

My truck selectively shifts hard

Hi there. From the description you provided, it seems you have more than one thing going on with your vehicle. The hard shifting, and the starting off in second and then jumping into first as you accelerate, could be a...

Put new clutch&fuel pump in now gas gauge doesn't work&stick won't go in 1or2LooseStick'99mer.cougar.Why is that? Holly

It is very possible that the mechanic's who did the work did not do it properly. I would recommend asking a mechanic who did the work to take a second look to ensure that their work was performed properly. The...

Related articles

How Long Should It Take a Heater to Warm Up in Cold Weather
When When you turn on your car’s heater, it should start blowing warm air. If the engine is already at operating temperature, this should happen immediately. However, if your engine is cold, it will take longer and if the weather...
How Long Does a Heater Blower Motor Last?
During During the colder parts of the month, you will start to rely more and more on your car’s heater. With all of the different components that are in place to ensure your heater works correctly, you may have a...
How a Car's Heating System Works
The The sun sets, and the air has a chill. You pause to flip your jacket collar up, and you walk briskly to your car door and slide into the driver's seat. Once you start your car, it’s only moments...