I have been dealing with a plethora of issues after buying my most recent s2k and finally I am getting to the final bits. I am now trying to diagnose some engine noise.

The engine noise increases with RPM so naturally I thought it was the motor itself or something driven by the belts.
However, this engine noise occurred before and after my motor swap, and the shop kept everything besides the block/head when the swap occurred.

It does sound like it is coming from around the belt tensioner area. I stuck my screwdriver on it as a stethoscope but I didn't come to any clear conclusion. I am hoping one of you is familiar with the sound. Otherwise I will start substituting components that run on the belt. I have a tensioner, AC compressor, alternator, and some pulleys from the swap.

Your help is always much appreciated, here is a video that I recorded of the sound.

The sound is the one you first hear after I turn on the car. It is not the tapping sound later but the continuous sound throughout the video, sounds like "woh woh woh woh woh woh woh woh"

[youtube]http://www.youtube.com/watch?v=pq5Uy3QNBPw[/youtube]

 

Does sound like a belt tension pulley. Maybe, pull the belt and hand spin each pulley. You may be able to detect the one with bad bearings.

How new is the belt?

 

Possibly bad alternator bearing. Or compressor noise. See if changes when putting a/c on. Listen with stethiscope.

 

The AC does not work and before the engine had an AC delete belt, so I guess that counts that out. I can double check tonight.

 

Turns out that it was the AC compressor! Swapped it out with one I had lying around, now I need to get my AC to work...