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Registered
Join Date: Nov 2006
Location: Wiesbaden Germany
Posts: 12
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low A/C voltage
I'm trying to fix the A/C on a '87 S4. I have 12 volts at the low pressure switch and 12 volts on both poles of the freeze switch. With the compressor clutch engaged the voltage dropped to 0. I replaced the blue relay in the control head but still have the same problem. Does anyone know where else I could be losing voltage with the compressor engaged? Thanks.
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07-18-2007, 10:43 AM
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