Skip the auto shop - Our mechanics make house calls

Q: A/C is blowing out hot air.

asked by on

My A/C in my car is fully charged, and the collant tank is filled. My problem is when my A/C is on it blows out hot air. I have also noticed a rattling sound and my car will rev when the A/C is on. Does this sound like a compressor clutch problem, or could it be something as simple as a leak in one of the hoses or possibly a burnt fuse? Thanks in advance for your input!

My car has 90000 miles.
My car has an automatic transmission.

A: The A/C system has electrical and mechanica...

The A/C system has electrical and mechanical operations. The electrical system is control by a computer. This computer uses inputs (sensors) to operate the A/C compressor clutch. The clutch is located on the front of the A/C compressor and when commanded electrically it will rotate the compressor. You can confirm this with a visual inspection.

When you are diagnosing this system, you need to check for proper operating pressures. The noise could be an internal failure with the A/C compressor itself. If you decide to get this fixed, consider YourMechanic, as a certified professional can come to you and diagnose the issue with your A/C firsthand.

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・Save up to 30%

Get a quote

What others are asking

Q: Poor fuel economy

Hello there, This is a common question. The fuel filter on your vehicle is built into the fuel pump and is located in the fuel tank. Fuel filters on this vehicle are not serviceable separately from the fuel pump unfortunately....

Q: Stuck in Park

The gear shifter is held in park as a safety feature. If the brake pedal isn't fully depressed, the lock will not disengage and allow the hear shifter to move. On most gear shifters there are small holes that lead...

Q: Engine swap from 327 to 1999 Vortec 350?

The engine swap should not be a problem. The problem you are going to have is the two wire harnesses and computers being different as this could make it more difficult to program each computer. You may not be able...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.