is it 993 ccu unit problem ?
01-27-2009, 11:29 AM
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is it 993 ccu unit problem ?
I changed my 1991 964 ccu unit with the 993 one two days ago.everyting was working perfect but now when I turn to the heat air is commig but without heat fans speeds are okey . anyone knows what could it be?
01-27-2009, 12:26 PM
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IHI KING!
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To use the 993 CCU, you have to make a wiring change depending on the age of your car. Its described in Adrian's book. I would double check that your wiring is correct.
By the way, my '90 C4 has a 993 CCU but had its wiring updated accordingly. The CCU has worked fine for 10+ years.
By the way, my '90 C4 has a 993 CCU but had its wiring updated accordingly. The CCU has worked fine for 10+ years.
