Good day guys!

My dad's Nissan Frontier T2 pick-up started doing weird noises a couple of months ago.. Parang "baka" (cow) na umuungol.. Parang "Moooooooooooooooooo" na mga 5-10 seconds ang tagal.. Nakakahiya kase anlakas ng tunog.. You can hear it even from mga 3meters away from the vehicle.. It does this everytime na mag automatic na mag-off yung aircon/compressor..

Dinala namin sa reputable aircon service center and chineck na nila lahat pero hindi nila nakaya.. All they could do was general cleaning.. Sabi ng mekaniko baka sa compressor na daw pero hayaan na lang daw kase kung hindi nila kaya, hindi din daw kaya ng casa.. hindi naman daw kritikal yung problema..

anyway, tumutunog pa rin yung aircon.. pero aside from the noise, wala naman problema.. malamig cya at hindi naman naaapektuhan ang takbo ng sasakyan..

any of you guys experienced this problem? baka pwede hingi advice..

TIA and God bless!