Skip the auto shop - Our mechanics make house calls

Q: AC not working

asked by on

The AC is not working. It looks like the compressor is not engaging.

An AC compressor not engaging is usually the result of one of four different reasons.

  • The A/C belt has broken
  • There is no electrical power to the A/C compressor
  • Third there is low or no refrigerant in the A/C system
  • The compressor itself has seized

One step you can take on your own, is to open the hood with the engine off and visually inspect the A/C belt. If there is one present, then the problem is elsewhere. Since we are dealing with refrigerant, I recommend enlisting the assistance of a certified mechanic, such as one from YourMechanic, to come by and diagnose why your A/C is not working. They will have the experience and specialty tools needed to diagnose and service your A/C system. They will quickly be able to determine if you are simply low on refrigerant, have an electrical issue or need to replace the AC compressor due to failure. They will also have the equipment needed to safely discharge and recharge your AC system and get your A/C system blowing cold again.

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

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: Truck seems to hop at certain rpm

Hello. From what you describe, it would appear that your vehicle is experiencing performance issues, perhaps misfires under heavy loads. If the engine is misfiring under heavy load it will most definitely be felt through the transmission and chassis. This...

Q: Truck screaming

Hello. It sounds like your AC compressor may have failed. If the compressor fails internally it will lock up and cause the belt to squeal and make this noise. The compressor can also release oil when it fails. I would...

Q: Bad VCT solenoids

If you believe that your VCT solenoids or cam phasers are inoperative, I would recommend having them tested and replaced as necessary by a qualified professional in order to resolve this issue. If these parts have truely failed, it is...

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...
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...