928 Climate Control Unit Troubleshooting
#16
Pro
Thanks, Dave. Good advice. I will drop back to square one and start over and replace the mentioned components. We are soon to be in the non-A/C season here and it will make a winter project.
#17
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The rest is 'just' labor.
If you've got a good vacuum pump then you should be set. The only remaining variable is if the system is contaminated with something other than gas (e.g. liquid or solids) in which case you'll need to acquire a DIY system for or outsource service for flushing.
#18
Pro
It's an 89 S4 so it ...should....have the old style compressor. The PO converted to R134 in 2004 (I have all the receipts) shortly after he bought it from the original purchaser. The compressor and receiver/dryer were replaced and he was charged for "oil and fittings" of unknown type. Later the rear A/C was worked on that included a recharge. I don't see any other work done on the system except one more recharge. Presumably it has worked satisfactorily since then. He sold the car in 2017 to the guy that flipped it to me.a week ago. So it is essentially a 2 owner car up to me.
#19
Ccu identification help!!!!
Hi. I have 83 928 the ccu is dead. I have power to all of the relays and fuses are fine. Resister pack is new. Blower tested good. My 928 has manufacturers date of 4 of 83. The vin says it takes the later ccu thats in it 83.5 to 95. The original ccu was na when i got the car.
is there a way to tell by the wiring which ccu should be in it?
is there a way to tell by the wiring which ccu should be in it?
#23
ahhh ok. Good insight my plugs are the same with the same wiring configuration from your photos but the head unit i got is from an 95. Same plugs but must be different wiring. No wonder i can't get it to work. I will order one. Thanks.
#24
The Parts Whisperer
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if you look closely at the late head the circuit board does not have any contacts on the right side
#25
#26
Nordschleife Master
You're new here.
Mark's cars are all years. He runs 928 International, one of the best sources for used parts for us.
He knows 'just a little bit' about the cars & the differences between the years.
Mark's cars are all years. He runs 928 International, one of the best sources for used parts for us.
He knows 'just a little bit' about the cars & the differences between the years.
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Mark Anderson (01-16-2020)