Skip the auto shop - Our mechanics make house calls

Q: Is my AC compressor good or bad?

asked by on

I put 2 can of r134a into low pressure to see if compressor clutch is turning nothing no turn and no pressure on gage

Does it mean compressor is bad or connection to clutch is bad

My car has 125000 miles.
My car has an automatic transmission.

A: You must have a massive leak in the system ...

You must have a massive leak in the system if you put in two cans and still nothing registers on the gauges. The entire system should be full if you put in two cans. For this issue I would suggest having a certified technician, like one from YourMechanic, with the correct gauges and leak test equipment to diagnose your A/C for leaks. If you have no refrigerant in the system the compressor will not turn on at all, this is why you should have the system leak checked.

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: Not blowing out hot air no defrost

Hi There, The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then...

Q: Why doesn't my defroster work in my 2003 Pontiac Sunfire

Hello. If the rear defroster is working like you explain then it sounds like the rear window needs to be replaced. As the element in the window begins to short out internally various parts of it will stop working until...

Q: AC melting vents.

An overall test of your air conditioning system would be helpful it sounds like the either the compressor isn't cycling refrigerant for some reason probably a leak in the system somewhere, a certified mechanic would be able to find the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.