Got my water pump and tstat replaced last week, and now my e-fan isn't working. I wouldn't think there would be a correlation between the repair and the fan.. But you never know. I checked all the fuses and wiring and everything looks good. The controller is getting power (I hear it click when it's connected to a constant power source). Not sure how to test the fan to see if maybe it just broke.. Any insight? Trying to sell and need truck 100%!

 

Try to test the fan connecting it directly to the battery with other cables and see if it works. That's was just come to mind right now!! Good Luck!!!

 

Is the truck getting hot/overhearting? maybe the efan does not need to come on now that it's cold outside and you have a new t-stat and pump and it's keeping it cool enough that the fan does not need to come on???

 

Ok I'll try to test the fan. And yes, the truck has been overheating in traffic. Thanks for replies