1985 Audi 4000..my radiator fan wont go off?

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Old 03-15-05, 05:21 AM
John Johnson
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1985 Audi 4000..my radiator fan wont go off?

I just changed my thermostat and after a few days my radiator fan wont turn off..it automatically goes on after I start the car and doesnt turn off on its own at all...is this a thermostat problem or is there some kind of sensor problem??..any help would be greatly appreciated...
 
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Old 03-19-05, 05:52 PM
billys68ss's Avatar
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You could have one of 2 problems here. Either you have an air pocket in your cooling system, or you have a relay that is sticking. There is a Technical Service Bulletin dated July of 1989 that states that the relay may stick in the on position.
There are 2 different relays. Depending on your amperage.
For the 40 amp system relay part number is 443 951 253K
For the 70 amp system relay part number is 443 951 253J
Hope this helps ya,
Billy
 
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