AC Compressor Replacement
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AudiWorld Senior Member
Joined: Mar 2018
Posts: 863
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From: Bellingham, Washington
AC Compressor Replacement
The AC system on my 1997 Audi A4 quattro 2.8 12v is the single most mysterious system to me. No codes came up after my AC stopped working, so took it into the shop to get a recharge. The techs there had discovered that the compressor itself is no longer working (not engaging). I had them discharge the system in preparation for the replacement.
I haven't found much definitive info on the compressor replacement and imagine that it is more involved than just replacing the compressor itself? Do I need to buy compressor oil? I read somewhere that I should also replace the receiver-drier. True? What about seals? I see that there is an AC cleaning solution available. Should I also do that?
I'd very much appreciate a few tips from anyone who has taken this on. Thank you!
I haven't found much definitive info on the compressor replacement and imagine that it is more involved than just replacing the compressor itself? Do I need to buy compressor oil? I read somewhere that I should also replace the receiver-drier. True? What about seals? I see that there is an AC cleaning solution available. Should I also do that?
I'd very much appreciate a few tips from anyone who has taken this on. Thank you!
Thread Starter
AudiWorld Senior Member
Joined: Mar 2018
Posts: 863
Likes: 72
From: Bellingham, Washington
Answering my own questions here..... Which means that I didn't do the proper amount of research before asking them 
.
A new receiver/drier (accumulator) is required whenever you replace the compressor, along with the appropriate amount of replacement refrigerant oil. I've ordered those parts as well as a seal kit, so should be set for the work now.
I've ordered another accessory drive belt too, as I may have burned the existing new belt by turning on the AC to enable recirculation while on a dusty road. OMG, it sounded like a howling beast! Must be a toasted bearing in there. Note to self: Don't do that.
.A new receiver/drier (accumulator) is required whenever you replace the compressor, along with the appropriate amount of replacement refrigerant oil. I've ordered those parts as well as a seal kit, so should be set for the work now.
I've ordered another accessory drive belt too, as I may have burned the existing new belt by turning on the AC to enable recirculation while on a dusty road. OMG, it sounded like a howling beast! Must be a toasted bearing in there. Note to self: Don't do that.
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