Q: AC malfunction

asked by on

I have problems with the air conditioning that doesn't cool anymore. The condenser fan was broken so I had it replaced. This repair did help somewhat but hasn't fixed the problem. When the AC is on, the compressor starts working as well. I had the freon added also. The AC still doesn't work correctly. What should I do?

Hi there, thanks for writing in about your 1994 Mercedes-Benz 300D. This sounds like you may have a leak in your A/C system. I would start by checking the various fittings and hoses for leaks. Check the hose manifolds on the compressor and check the front seal and O-rings sealing the pressure switches on the back of the compressor. Make sure all hoses are crimped onto the fittings. If you need help with this, a certified technician from YourMechanic can come to your car’s location to inspect the AC system and pinpoint what repairs are necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. AC malfunction

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: 2008 Mazda Tribute condenser issue.

The condenser on your vehicle is manufacture specific. Now, the years 2001 - 2004 are the same but in 2005 all years had different models of condensers. I say that if the ports are the same, the dimensions are the...

Q: My car is C180 AMG. My car jerks but when i unplug the airflow meter sensor it drives normal, its a new airflow meter.

Hello there, many different faults can cause the MAF sensor on your 1999 C180 to cause the car to run poorly. If the MAF sensor was replaced and the problem still remains than the most likely faults are a vacuum...

Q: My car's air conditioning/heating system only works for a brief time and blows the wrong temperature air

Your Villager comes equipped with either an automatic climate control system or a manual controlled climate system. The automatic controlled system uses four separate sensors and as many modules to operate. Any of these can be the source of the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
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...