Update: I had a free check done on the AC by a nearby shop to get another opinion, and the tech there, while a bit unsure, didn't think we needed to do anything to the compressor at this point. I added 1oz of oil and about 8oz of r134a this evening, with perhaps a bit of improvement in how easy the ...

Here are the readings: 30°C (86°F) ambient, 40psi low, 220psi high, fans (both) high, air recirc (to avoid sucking in engine fan air), windows slightly down to keep the heat load up, RPM 1000, and subcooling varied between 2°C and 7°C (4°F and 13°F) depending on the conditions. I was able to force t...

The system looks perfect on the outside. All visible lines and fittings are dry, compressor is dry, evap drains (front and rear) are dry, condenser is dry. I did not remove the clutch to check the shaft seal, but there's no evidence of oil being slung around. The previous owner says they've never ha...

I would think an oil-dominant leak would be from a low spot in a component that tends to retain a pool of oil - compressor case, condenser, evaporator, drier. I'll have a look.

Greg.

136K miles on the Sienna. We just acquired it two weeks ago, but we know the original owners. The vehicle is well-maintained but "grew up" in the humid southeastern US, so lots of AC use most of the year. Probably 75% of the miles are around-town driving. No previous repairs to the A/C. Gr...

Additional information: - once the vehicle cools off completely, the compressor (10S type) turns relatively easy by hand, without binding, though not quite as easy as two other Denso compressors I have access to (a very similar 10PA type with 360K miles on it and a variable displacement 7SBH type). ...

Hi all, We have an '06 Sienna with a Denso 471-1010 compressor, I believe this is of the 10S20C type. The air conditioning is working fine - nice and cold front and rear air. However, once the engine is well warmed up, the compressor can engage with a bit of a thud, and even after letting pressures ...