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               Originally Posted by 
               swampy 
                
               
             
              cleaned all the connectors, checked all the circuits. checked the fan feed all ok. Temp sensor checks out ok. Now the fan behaves and comes on when it should. looks like it was just a loose or corroded connection.
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         Fairly typical of an XT I'm afraid! Electrical gremlins can often be attributed to corroded connectors, dodgy connections or abraded wiring.
         
        
 Glad all is now well.