Skip the auto shop - Our mechanics make house calls

Q: AC still blowing hot air

asked by on

Replaced the motor blower resister and the motor blower and recharged the AC but it is still not blowing out cold air and when the AC is on it makes my RPM gauge jump up and down. Please help

My car has 122000 miles.
My car has an automatic transmission.

Is there any air blowing out from the vents at all? If so, then the blower is working. If not, there could be a problem with the power supply for the blower motor, and that will need to be diagnosed. If the problem is that the air blowing out is’t cold, then you will need to have the A/C pressures checked while the A/C is running. First though check that the compressor is running, and that the fans are turning on as well. If the compressor is running, and the fans are coming on, the pressures may not be correct, which will cause the A/C not to get cold. This A/C problem will need the help of a qualified professional, such as one from YourMechanic.

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. AC still blowing hot air

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 dies and restarts by itself

Hello, thank you for writing in. The main component that is in charge of turning off and on the vehicle is the ignition switch. You will likely want to start by inspecting and potentially replacing this switch. To truthfully know...

Q: i was driving down the expressway playing with the cruise when it just stopped running i have power but when i turn the switch

The cruise control should not be related to anything in your vehicle that would otherwise cause it to die. However, this is a known issue with the Chevy HHR and is often a result of unresolved electrical issue. I would...

Q: I got a brand new battery and my car won't start but will when jumped. What could the problem be?

Hello. If the vehicle has a new battery and if it starts with a jump, then you either have a bad battery terminal connection or the positive battery cable is failing. Most of the time, this will occur if the...

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 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...