Humming sound/ Choked Engine when a/c is on

[Blindbox]

good day sir, parehas na parehas tayo ng problem.. kakapagawa ko lang din yung a/c ko and nagpalit ng compresor, similar to you yan na yan din sabi sa akin ng mga a/c specialist at mekaniko dahil bago pa daw compresor later on daw e mawawala na din.. but parang may something kasi na hindi ok kaya i tried to search for some ideas, ask ko lang po kung ano yung balita sa compresor nyo? ano ano po ginawa and ok na po ba sya ngayon? thanks.

[JohnM]

I think the Sanden 507 is a piston-type compressor. Piston types are noisier than the scroll type that might have been what was originally installed in the car. They also take a bit more power to turn. Piston types are cheaper than scroll types though.

piston:


scroll:


IIRC the TRS090 has the same fittings and mounting points as the 507. I got mine brand new for around 10k 5 years ago.