A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Overheating 3.0

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Old Sep 16, 2015 | 11:10 AM
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Default Overheating 3.0

HELP. Have a 2002 A6 3.0 Quattro (165K) with new radiator, water pump, thermostat, timing belt, cats (both sides), coolant, alt. belt, valve cover gaskets, etc. All this cause the water pump was not circulating and the car was overheating. Replaced it all and the thing still overheats. Fans don't come on and when the car overheats the A/C get very warm. Any ideas?
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Old Sep 16, 2015 | 03:38 PM
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Default Check the fan motors, fan control module, and CTS.

Originally Posted by mlapone
HELP. Have a 2002 A6 3.0 Quattro (165K) with new radiator, water pump, thermostat, timing belt, cats (both sides), coolant, alt. belt, valve cover gaskets, etc. All this cause the water pump was not circulating and the car was overheating. Replaced it all and the thing still overheats. Fans don't come on and when the car overheats the A/C get very warm. Any ideas?
There's a coolant temperature sensor in the lower radiator hose that controls the electric fan. Also, the fan in front of the condenser should come on when the AC comes on.
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Old Sep 17, 2015 | 09:29 AM
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Default

Originally Posted by SloopJohnB@mac.com
There's a coolant temperature sensor in the lower radiator hose that controls the electric fan. Also, the fan in front of the condenser should come on when the AC comes on.

Thanks!!
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