Originally Posted by Peralko
When the engine is running, does the clutch on the AC compressor move? If it does not move, your compressor may be bad. .....
Even if it does move, it may be worn out. The actual clutch plates wear out over time.
The good news is that if it's only worn out, you only need to replace the clutch mechanism, and not the entire compressor assembly.
The bad news is that many shops will not want to only replace the clutch mechanism, (they will never divulge this money-saving fact to you during the diagnosis), and will insist that you NEED a new compressor, (so they can charge you more hourly labor). And, if they can talk you into a new compressor, you are going to need a new dryer, because the system is open....etc..
An easy $200 repair quickly becomes a $3,000 money-making job!