Expert: Candido Figueroa - 7/29/2009

Question
I have a '05 sonata. The air conditioning compressor squeals (AC on or off).
> The noise can be quite load; it seems temperature and humidity dependent. It will fade to a lower noise level as the car warms up. I'm
> fairly sure that the noise is from the compressor; I used a small microphone
> to check where noise is loudest.  It seems that the compressor pulley wheel and
> whatever shaft it is riding on makes the noise.  Is there any way to get to the
> center 'bearing" and lubricate a little without removing or replacing the
> compressor unit?
>

Answer
HI Woody

Inspect your belt for wear and tension it may be that easy.  As to the bearing you must remove the clutch plate to remove the pulley.  I South Florida some mechanics try to do it without removing compressor.  I really find that harder then just removing and replacing on the bench.  Good luck Let me know.