It is probably worn out and about to seize. Replace it before that happens so the system doesn't fill with debris from the pump.
possibly the timing chain tenisoner. wear on the plastic casuses a clicking sound.
Seems Compressor need to be changed.
Probably, sense Toyota's sound loud and like vacuums anyway...
Your muffler fell off.
That would be the sound of your mother-in-law.
when you try to start it then it's the starter.
if you have an 3.1 it dont sound bad, it sounds like an v8 at idle, but not as loud
The loud noise from the AC when turning off is often caused by the sudden release of built-up pressure in the system as the compressor shuts down. This pressure release can create a loud "whooshing" or "popping" sound.
that year had the jet engine option
a v6 will never ever sound like a 454 . and why would you want it to anyway
Overheating. Have the cooling system checked.
Your AC compressor may be loud due to issues such as worn-out bearings, a malfunctioning motor, or a refrigerant leak. Regular maintenance and timely repairs can help reduce the noise level of your AC compressor.