Skip the auto shop - Our mechanics make house calls

Q: AC clutch fan relationship

asked by on

AC compressor clutch went out... Bought whole new compressor with clutch just in case compressor was bad.. Car starts and runs fine with AC off... The fan would work for about 3days. Now the fan won't even go at all. Are they related? Could it be a fuse. Or another problem altogether? Thank you. Also is it imperative to vacuum system before charging? All freon evacuated when clutch failed.

My car has 167 miles.
My car has an automatic transmission.

A: The fan is kinda related, in that it is nee...

The fan is kinda related, in that it is needed and commanded by the AC system to help cool the hot condenser. Its electrical circuit is separate from the AC electrical circuits.

Definitely check the fuses first, then check for voltage at the fan to determine if it’s a bad fan, or if it’s not getting power. It is strongly suggested to pull a vacuum on the AC system before charging. This helps remove moisture that can freeze and plug the system and also removes air that will not contribute to the cooling effect at all. The more air in the system, the less refrigerant you can put in there, and the warmer the AC will feel.

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: Cooling fan kicks off when the AC is on, on a 2000 Cherokee XJ

No, it is not normal. They shouldn't cycle that fast. When the fan is on, the fans generally run as long as the compressor is running. So, if you live in an area where it's really hot like Arizona, you...

Q: Car shuts off unless the gas pedal is applied

The coil should be generating tens of thousands of volts to the spark plug. 12 volts is the correct supply side to the coil. It also sounds like you still have a fuel problem. Have a professional mechanic check the...

Q: Doors will not unlock or open only driver door

This sounds like some sort of an electrical issue. I recommend checking all fuses relating to the windows. Rather than removing each fuse, you should be able to use a circut tester that you can pick up at your local...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...