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Flushing Question: do you have to remove evaporator from the car?

bearing01 on Wed April 30, 2008 6:36 PM User is offline

Year: 1997
Make: Volkswagen
Model: Cabrio
Engine Size: 2.0L
Refrigerant Type: R134a

Hey all,

I'm replacing the compressor (SD7V16) when I get it from (bad RCV). My plan was to just pour the oil out of the old dryer & compressor and then add that same amount of oil to the new parts. If I need to do a flush to remove all the old oil from condenser + evap can I flush while these parts are still in the car? Or does the evaporator & condenser have to be removed? The condenser isn't a problem. However, the fittings on the evaporator are high up / above the heat exchanger. I don't see how the flushing agent could be fully removed by blowing it up-hill through the tubes.

Also, I'm sure the condenser is the newer-type with parallel flow channels so I'm probably best off not flushing it since I may never get the oil out?

Also, will the new compressor (not reman) come filled with oil or empty?


Chick on Wed April 30, 2008 6:40 PM User is offlineView users profile

first, some new compressors come with oil, some don't. Open the ports when you get it. I always drain them if they do and use my own oil anyway, because they aren't always labels with what kind of oil they have in there. Depending on the failure of the old compressor would determine if the evaporator "needs' to be flushed, since you probably don't have proper flushing tools, and the evap can be a bear to flush. If not done right, and flushing agent remains, it can contaminate the new oil causing premature compressor failure, so if the old oil wasn't burned, dark, or otherwise contaminated, you might be better off leaving it alone..Just my opinion...

Email: Chick


Freedoms just another word for nothing left to lose

TRB on Wed April 30, 2008 6:42 PM User is offlineView users profile

Replace compressor & accumulator. Blow all the other components out with shop/compressed air removing as much oil as possible. Add back the OEM specifications on oil and refrigerant.


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