To determine if the grinding is actually coming from the AC compressor and to safely address the issue, you should:
1. Identify the source of the grinding: With the engine OFF, try to manually rotate the AC compressor pulley. If it's seized or very difficult to turn, that's a strong indication the compressor is the problem. Listen carefully while the engine is running to pinpoint the exact source of the noise. It might not even be the AC compressor.
2. Inspect the AC belt: Check the AC belt (it's part of the serpentine belt system) for cracks, fraying, or glazing. A worn belt can cause squealing or grinding. Replacing a worn belt is a much simpler and cheaper fix than dealing with a bad compressor.
3. Check the AC compressor clutch: The AC compressor clutch is electromagnetic and engages/disengages the compressor. Sometimes, the clutch itself can fail and make grinding noises. This is often a less expensive repair than a whole compressor replacement.
If you determine the AC compressor is bad:
* Professional help is recommended: Replacing or repairing an AC compressor is a moderately involved job. It involves refrigerant handling (which requires special equipment and training to avoid environmental damage and personal injury from exposure to refrigerants), potentially removing other components for access, and recharging the system after the repair or replacement.
* Do NOT simply remove the belt: As stated earlier, this is not a safe or recommended solution. Running the engine without the serpentine belt will damage other components quickly.
In short, while you can remove the serpentine belt, it's not a solution to a grinding AC compressor. It's a temporary measure that disables several essential systems. Focus on identifying the exact source of the grinding noise first, and then seek professional help if it's the AC compressor. A mechanic can diagnose the problem correctly and perform the necessary repairs safely.
