marshall2j

Having a hard time determining where the noise is coming from. The only thing I've changed is the A/C compressor with a newer, used, "working" one. It was quiet when I first installed it, but noise has developed. Not sure if it is related to the compressor, I can't replicate it when engine is not running. EDIT: Crank Pulley?

Thanks

Video 1: Engine Running


Video 2: Engine off, serpentine belt off

2jznosht

crank pulley would make more of a squeal sound usually. when its running is everyhting aligned? does the crank pulley look wobbly at all?

marshall2j

^nothing looks wobbly at all. This is so confusing, it's probably the a/c compressor

TheAzn

iTrader: (2)

Remove the belt and start the car to verify it is NOT the engine, in case.

With the belt on, carefully see if any pulley is vibrating or wobbling. When I had cars with similar problems, it is usually the idler/ tensioner pulley. Don't forget you have one for the timing belt, too. My friend had a car where the tensioner was screwed and the timing belt, although it didn't run like crap, was flapping and hitting the timing cover.

It could be a rise of another problem by coincidence, not the AC.

marshall2j

^ Good point. I'm sure the car will be fine for a few seconds of no alternator, power steering, or fan belt

TheAzn

iTrader: (2)

Yea, it's not a problem unless you run it until it gets hot or lose power. Hope you find out the problem