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Audi a4 ac,radiator fan problem?

Hi

In my audi A4 when i turn the ac on coolant temperature gauge fluctuates and Radiator fan comes on .what it could be ??or another expensive repair.
thanks.


The fan is supposed to come on when you turn the AC on. This helps to cool the high pressure side of the AC system. The fluctuation in temperature could be a completely separate issue. May even be just an ECT sensor. It would be easier if we had more

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