I have 07 altis AT at 83k kms. Nakaka rinig ako ng mejo high pitched sound pag cold start duda ko ung drive belt or serpentine belt. Pero nawawala ung tunog pag mejo uminit na makina. Parang umiikot na sound.

I dont think i encounter any trouble sa alternator, no symptoms of fault sa electricals. Kahit patay ang AC meron din nung tunog, so abswelto ung compressor ko tama? Pinalitan kasi ng surplus last year yun.

Stock na serpentime pa din naka kabit. Is that it?