Skip the auto shop - Our mechanics make house calls

Q: Defroster malfunctioning

asked by on

Hi. I'm having some issues with the defroster in my car. On the left side, the cool air is blowing out. Whereas on the right side, the warm air is blowing. What is causing this and how could I fix it? Thank you.

Your car has a dual temperature control system. If you put both sides to full cold or full hot, then it will not be in automatic mode and should be blow fully cold or hot out of the vents.

If you put the system to dull hot then if one side is cold and the other hot, then the system has a bad temperature control actuator to the side that is not correct. The actuators are on the evaporator case on right side of the dash. If you want to have this thoroughly checked, have a mechanic diagnose your AC system and make repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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. Defroster malfunctioning

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: 1975 Eldorado convertible trips the 40 amp breaker for the power windows when lowering or raising them. Why and when can you look at this?

There is some device along the power window circuit that is drawing much more amperage than the system was designed for. This short can be caused by a broken wire grounding out on the body and causing a short, corrosion...

Q: Problem with secondary air injection and the idle is hunting.

Hi there. When the air pump is working and the engine is running fine and then when the air pump is turned off and the engine idle starts to hunt, then there may be water in the air pump or...

Q: ignition cylinder missing due to theft

As long as you have an original key you can hold that key against the new key when you turn it on to run and then turn off ignition and within 5 seconds turn ignition back on with old key...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...