Join Date: Aug 2017
Location: DFW area
Year/Make/Model: 2013 Vulcan 900 Classic LT
Color: Sparkle Black and Titanium
Check the coolant level. There is an overflow bottle on the left side, behind a cover with a circle on it, just behind the kickstand. Unfortunately, the temp sensor used by the ECU to turn on the fan, is located near the top of the cooling system. Once it's uncovered by a low coolant level, the fan will no longer work reliably. The fix is a proper coolant level.
It's possible the overflow bottle has fluid, but removing the radiator cap will still confirm a low fluid level. This is a cooling system vacuum problem, but we can discuss that issue if you discover it.
Last edited by jbiggers; 03-10-2019 at 09:49 PM.