Q: Car only throws heat out on driver side and cool air on passenger side in summer a/c works very little

asked by on

Car has 211,000 miles on it and we love it heater throws out some heat on driver side and none on passenger side same when you use ac. Do you think it is the blower

My car has 21100 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The air temperature coming through the vents has more to do with where the air is coming from. If the heater is running it will be passed along the heater core and pushed into the vents based on how they are set. If those setting are not allowing heat to come to one side of the cabin, the blend doors are likely to blame. These are small doors inside the climate control duct work that are run by small servomotors to control how the air temperature interacts with the cabin. If these motors, or their electrical connections, have failed, you will have to replace them. It can be a difficult procedure as they are generally harder to access. For more help with testing the system or replacing the blend doors, contact our service department to schedule an appointment.

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
  1. Home
  2. Questions
  3. Car only throws heat out on driver side and cool air on passenger side in summer a/c works very little

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

Q: Car blowing cold on one side, hot on the other

That sounds about right. There have been a lot of cases with faulty actuators. They are computer controlled. If a code is set, they will default to a set position, or it's stuck. The blend door itself could be stuck...

Q: No A/C or heat and car is overheating

Hello. You may have two problems here. The engine temperature gauge behavior could be a thermostat going nuts as you describe. I would certainly check ground connections for the engine temperature sensor, and the engine-to-chassis connections in general. It may...

Q: How long does it take to replace the compressor bracket

Once the compressor is removed from the bracket, then there is only a couple of bolts that hold the bracket to the engine block. Make sure the compressor rear bracket is tightened or the new bracket will break. The bracket...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...