When an AC compressor is failing on a 2001 Lincoln LS, it may produce a variety of noises, including a loud grinding, rattling, or squealing sound. These noises can indicate that internal components are worn or damaged, such as bearings or the clutch. Additionally, a hissing sound might occur if there is a refrigerant leak. If you notice these sounds, it's advisable to have the compressor inspected or replaced promptly to avoid further damage.
The whining noise in our 2001 2.2 cavalier turned out to be the a/c compressor. It ended up going out at about 120,000 miles. I would suggest having it serviced. I wish we would have had ours serviced.
You should be able to hear the compressor Overtime the compressor will get noticeably louder. This doesn't necessarily mean that it's failing or should you be alarmed. If you are concerned I would suggest that you take it in and get it checked out.
check a/c compressor and belt.
A/C compressor? A/C compressor?
The A/C system compressor operates when in the defrost mode. If the noise is also heard when running the A?C it is more than likely a problem with the compressor/pulley.
start by checking a/c compressor.
Most likely you have a damaged - locking a/c compressor internally.............
Assuming you are asking about the ac compressor, there would be two possibilities, blown fuse or low on freon.
The compressor may have a locked rotor in the condenser causing the loud roaring noise. Another possibility is low refrigerant.
The clutch assemble is shot...
Most likely the compressor. It could also be the valve in the system too, when refrigerant gets low. What sort of noise is it???
Bearing in: Alternator? Water pump? A/C Compressor? Belt tensioner?