Skip the auto shop - Our mechanics make house calls

Q: A/C blows only hot air

asked by on

Our summers are so hot and that’s all I get from my A/C - HOT air!! No matter what temp I set, it’s only hot air. I talked to the dealership and they think it’s a module. If so, I want to replace it myself. Do you agree with their assessment and can you tell me how to install it?

A: Hello. This can be a module, but it can als...

Hello. This can be a module, but it can also be an issue within the system. I typically check the system pressures first. If the pressures are fine and are functioning right then the actuators under the dash need to be checked. If those are also fine then the module is more than likely the issue. If the module needs to be replaced then you can install a new one, but it would need to be programmed to the vehicle otherwise it would not work. This would have to be done with the right computer scan tool. If you need to have this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to inspect the cause of the issue.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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 loses power while accelerating

Hi. If your car is suffering in performance and the wrench indicator light has come on, then that means the vehicle needs to be serviced. A professional technician, such as one from YourMechanic, should be able to scan the vehicle...

Q: Car squealing.

The pulleys on the engine or the tensioner is the cause. The belt could be bad also. I would recommend having a mechanic, like the certified ones at YourMechanic, come and check it out for you to see if this...

Q: My car key won't turn in the ignition

A number of things can make the ignition difficult or impossible to turn. A faulty ignition switch or ignition tumbler may not signal the shifter interlock properly, preventing the ignition from turning. Also, a damaged,loose, or misadjusted shifter mechanism can...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...