91 Volvo 240 AC compressor choices
Posted: Thu Jul 09, 2020 11:49 am
Hi everyone
I have a 91 volvo 240 with the later style orifice tube AC system. I recently installed a rebuilt oem compressor purchased from ebay along with a new evaporator core, accumulator and orifice tube. I thoroughly flushed the condenser and hoses. The system pulled down to 500 microns and held below 700 for 5 minutes. Mineral Oil and R12 were used. When I first charged it, it blew ~50-55 degrees at idle and low 40s while driving. Pressures were perfect at 30 low and 220 high and the compressor would cycle regularly while driving. Now after a couple weeks I cant even get 70 degrees at idle and 60 while moving. The compressor is no longer cycling. My first thought was a leak but the gauge readings prove otherwise. Today with 90* ambient I'm seeing 50 on the low side and 130 on the high side. If I rev the engine to 1500 rpm it drops to 40 on the low side and goes to 150 on the high side. Even held at 3000 rpm I cannot get the low side pressure below 30. I'm fairly sure my compressor is dying. Having realized buying a cheap reman was most likely my problem, Id like to pick out a new compressor this time around. However there are two different types of ac compressors they sell for these cars.
The first is the OEM Diesel Kiki style unit like this: https://www.partsgeek.com/gbproducts/DC ... p=pp&gbm=a
The second type is a Sanden compressor : https://www.acparts.com/product/new-ori ... ssor-4664/
The question I have for the experts: Which type of compressor am I better off with? I'm leaning towards the Sanden as it seems like a more modern compressor. Any input is appreciated!
I have a 91 volvo 240 with the later style orifice tube AC system. I recently installed a rebuilt oem compressor purchased from ebay along with a new evaporator core, accumulator and orifice tube. I thoroughly flushed the condenser and hoses. The system pulled down to 500 microns and held below 700 for 5 minutes. Mineral Oil and R12 were used. When I first charged it, it blew ~50-55 degrees at idle and low 40s while driving. Pressures were perfect at 30 low and 220 high and the compressor would cycle regularly while driving. Now after a couple weeks I cant even get 70 degrees at idle and 60 while moving. The compressor is no longer cycling. My first thought was a leak but the gauge readings prove otherwise. Today with 90* ambient I'm seeing 50 on the low side and 130 on the high side. If I rev the engine to 1500 rpm it drops to 40 on the low side and goes to 150 on the high side. Even held at 3000 rpm I cannot get the low side pressure below 30. I'm fairly sure my compressor is dying. Having realized buying a cheap reman was most likely my problem, Id like to pick out a new compressor this time around. However there are two different types of ac compressors they sell for these cars.
The first is the OEM Diesel Kiki style unit like this: https://www.partsgeek.com/gbproducts/DC ... p=pp&gbm=a
The second type is a Sanden compressor : https://www.acparts.com/product/new-ori ... ssor-4664/
The question I have for the experts: Which type of compressor am I better off with? I'm leaning towards the Sanden as it seems like a more modern compressor. Any input is appreciated!
Not sure how it got in there unless it was in the new evaporator or accumulator. Definitely explains the compressor failure though. Lesson learned, flush new components too. 