Q: A/c blows cold on max but when you change temp, the air gets warm.

asked by on

When the front a/c is on 60 (max) a/c is very cold. Change the temp to 61 and it blows warm. Blower works fine, compressor kicks on, blend door operating normally, replaced water control cable (properly), and a full evac and recharge on a/c system.

My car has 225327 miles.
My car has an automatic transmission.

There is an issue with the thermostat for the air conditioning system. The adjustment switch to the air conditioning system may be defective and not adjusting the thermostat properly, but instead it is opening the vent to the heater core to change the temperature rapidly. I recommend replacing the thermostat and the switch that controls the thermostat on the air conditioning system. If you need further assistance with your air conditioning system, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. A/c blows cold on max but when you change temp, the air gets warm.

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 is still overheating - 2006 Acura TL

There is no bleed screw on the 2nd generation TLs. Bleed the cooling system with the nose of the car higher than the rear if possible let it heat up at an idle until the thermostat opens and allow all...

Q: Car not starting after overheating

Hello, when you say the car won't start, is it a crank no start or does it not even turn over? If it wont even turn over, remove all the spark plugs and see if it spins over after that....

Q: Car will turn off and begin to coast

This is a problem that I have not encountered before and may not be common. I would have the computer tested to see if a failure code was stored when the problem happened as this could help a technician identify...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...