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Cooling fan

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I recently changed to the GT500 cooling fan on my 12 Boss.
Ever since the swap I have no low speed fan.
I checked all fuses and swapped the relay,still no low speed fan.
The fan only runs when the A/C is on.
Any help will be appreciated.
Thanks Guy
 
I don't remember my stock fan running a lot unless my ac was on or it was run hard but maybe I just never noticed.
 
173
38
It does not come on unless the air is on.
I have a local shop with the Ford software.
We'll see what happens.
 

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