Hi guys,

I'm new sa thread and I just want to ask for your opinion. I just recently bought and installed a new Sanden R134a compressor (di ko maalala model)
to replace my old R12 and I noticed the following:

When I turn off the aircon, may parang nagkikiskisang bakal after mga 2 seconds, then mawawala. I tried tracing the source and asked my brother to turn off the aircon while I observed the engine area, napansin ko na pag-off ng compressor, the black part sa harap (yung may mga metal part na umiikot) eh parang nagbra-brake, thus causing the "ee-ee" sound. I realized then na naririnig ko rin ito pag-nag-automatic aircon while driving, di ko lang pansin dahil parang spilt second lang naman. Is this normal? Also, parang nagva-vibrate din yung bakal/brace kung saan nakakabit yung compressor, which hindi naman nangyayari nung nakakabit yung dati. The compressor is under warranty naman sa shop where I had it installed and replaceable pa pero gusto ko lang masiguro kung factory defect ito since its brand new.

Any input is very much appreciated. Thanks!