I just recently bought a new 2001 Bomb DS650 and I am having trouble with the fan running when the engine heats up. I replace the fan and no luck. I am getting power from the battery. What else can I check? There is a sensor that I am wondering about on the right hand side that connects in line with the line for the anti-freeze. I am assuming that this it the thermastat. Could that be bad? Any help would greatly be appreciated.

 

This happens a lot with the early years. My buddy use to have one, and the fan was messed up all the time. I will ask him about it....

 

if you have power check the ground.