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?
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: Re: 2006 Mercedes 350- Battery icon lite when 1st starts up.

The battery should be load tested to determine its condition. The battery might be "weak" and this losing charge as the car sits. In addition, charging system output should be verified against factory specifications. Batteries are very important. If the...

Q: Car involuntarily accelerates 2-car lengths 1 out of 100 times

Hello. This can be a dangerous issue and does happen on this vehicle. Typically I have repaired this with updating the computers in the vehicle. Some of the time when the degeneration is not working correctly it is because the...

Q: Timing belt failure - 2006 Chrysler Pacifica

Hi there - no, it would have been impossible for a mechanic to know a timing belt failure was imminent. Given your mileage, the timing belt has been changed at least once already. When that was done, the service center...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.