Fixing Air Conditioning: OEM or aftermarket compressor

[Laird Scooby]

Originally Posted by Craigtange

I need to replace the AC compressor on my mk4. I know Sanden is OEM and recommended. I can't quite justify an new Sanden bill on this car. Would you recommend an old Sanden. I know they're still available. How much of a gamble is picking up a used one, particularly off these forums from a respected seller? I assume Valeo is outsourced to the east, so some gamble there also. Which is the better bet?

Picking up a used AC compressor is a big gamble, chances are it will have been sat a while so the clutch bearings may well be Brinelled. Also no knowing about the actual pump part of the compressor, that could have corroded badly too.

Your best bet would be to pick up a reconditioned/remanufactured exchange unit from someone like Rock Auto, it will likely be a Sanden and rebuilt to OEM tolerances using new parts where necessary and should come with a similar to new warranty.
Valeo tend to rebuild things like AC compressors, alternators, starters etc and are generally reasonably good. They do manufacture some items themselves but a reconditioned/remanufactured unit should be stated as such.

[940volvoman]

How easy/difficult is it to service an a/c compressor?

If I'm told that the compressor is leaking I still have a spare that I would need to service before fitting...

[Laird Scooby]

Originally Posted by 940volvoman

How easy/difficult is it to service an a/c compressor?

If I'm told that the compressor is leaking I still have a spare that I would need to service before fitting...

Because of the nature of the beast, it is a specialist only service job. Changing the worn/damaged bits is easy enough, it's being able to connect it to the right test rig to firstly diagnose and secondly test once rebuilt is where the specialist comes in as those bits of kit aren't what would be in the average DIY or even garage workshop.

[940volvoman]

Thanks,Mr Scooby.presumably it a send away jobbie.Any preferences?Or recommendations?