1 Will the radiator fan turn on without a coolant bulb? Wed Mar 31, 2021 2:46 pm
nullfox
active member
I have an 88 K75 and I recently installed a new Acewell speedo/tach hooked up to a BEP. The Acewell has an oil temp bulb, but no coolant bulb. After going for a long-ish ride that was freeway/twisties and getting back into the city, I sat in traffic and had the bike overheat with steam coming out of the nipple on the coolant reservoir on the right side. I immediately shut it down and let the bike cool down. I've since gone on a couple more rides and even when the bike heats up, the fan doesn't seem to ever come on.
Does the lack of a coolant bulb prevent the circuit for the fan from kicking in/turning on? If not, what's the best way to diagnose the fan not kicking on?
Cheers
Does the lack of a coolant bulb prevent the circuit for the fan from kicking in/turning on? If not, what's the best way to diagnose the fan not kicking on?
Cheers
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1988 K75C