So... it's been a long road for us and our 2008 Sportsman 500 EFI. Learning as we go. We first encountered the over heating issue a couple of months back on a back country fishing trip. We noticed that the fan wasnt kicking on upon further inspection after we got it home.
So we changed the coolant that week, even though it didn't need it and just finally had a chance to change the water temp sensor today after being in pieces in the garage for over a month now. We noticed that when we disconnected the sensor that the fan would kick on. When we plug it back in, the fan then stops. It's a new sensor and we still have the same issue. The fan just won't kick on like it should.
What else can we check? Fan works, water pump works but were not getting a signal for the fan to kick on when the machine heats up...
Thanks guys and gals.
So we changed the coolant that week, even though it didn't need it and just finally had a chance to change the water temp sensor today after being in pieces in the garage for over a month now. We noticed that when we disconnected the sensor that the fan would kick on. When we plug it back in, the fan then stops. It's a new sensor and we still have the same issue. The fan just won't kick on like it should.
What else can we check? Fan works, water pump works but were not getting a signal for the fan to kick on when the machine heats up...
Thanks guys and gals.

