our fan didnt come on this morning and she let out a puff of steam, tested the fan and its fine

do the these switches give bother often ?

I replaced one already on this bike a couple of years back and we dont ride very often. 

am I right in saying it should come on at approx 71 degrees when testing ? our does have continuity in boiling water but need to find a thermometer to test it properly 

 

thanks 

 

 

I would think the thermo switch should close at closer to 95 C .

Fitted a new switch anyway

On the obvious assumption that the new one works properly

These wee things runs hot before the fan kicks in, but it kicked in

the coolant was probably slightly overfilled as its hard not to, coolant just started to drip out the overflow, then the fan came on 

will call it a result