Must KLR fan run all the time to avoid overheating?
I just finished a 685 kit install, and now my bike overheats. It seems fan switch may be bad, since fan does not want to come on. I put a little jumper on the switch, and the fan runs fine. Gonna test the switch in a pot of hot water as soon as engine cools a bit.
But here's my real question: should the fan be needed 100% of time in order to avoid overheating? I rode 5 miles today with all plastics off, and temp gauge headed toward the red if the fan was not on. No idling, no traffic, speeds of 30-40 mph, and air temperature of 65 degrees. But when I added the jumper, and forced the fan to come on, the temp needle stayed horizontal for the next 5 miles. This is in the "normal" range, but certainly hotter than I would have expected on such a cool day, with all plastics off.
I've got good flow in my radiator, and I've burped the system of air pockets. Kit was from Eagle Mike. I also just now replaced my thermostat thinking that was contributing to the problem, but now it looks like the fan switch. (Hope not: a new one is >$100.00!!
"Chet from Chattanooga"
2009 KLR, blue
Last edited by clogan; 05-17-2016 at 12:49 PM.