Radiator fan troubles

the oaf · Post by **the oaf** » 20 years ago

The fan on my radiator appears to have packed up. Whilst I'm moving this isn't a problem... however, if I idle the bike for too long the engine really starts to heat up... so it's a good job I spent all that time learning how to filter properly in London wasn't it?

Anyone else had this problem and/or know what could be causing it?

Cheers, Matt.

fanarrfnarr · Post by **fanarrfnarr** » 20 years ago

well, if it's anything like a car system (which i assume it is), the most likely cause is the fan switch has packed up. if your feeling barve, try shorting across the connector that goes onto the fan switch and see if the fan comes on. if it does the swith is knackered. might want to get a 2nd opinion 1st though.

Cheesy Grin · Post by **Cheesy Grin** » 20 years ago

FWIW, I had same concern with my 1000 a while back. Tried shorting the thermostat and the fan activated fine.

Spoke with my dealer and they said the TL1000 engine does need to get hot and not to worry about it (bear in mind a warranty claim for a thermostat is a lot less hassle for them than blown gaskets or warped cylinder heads). Fan did kick in recently after a long blast - so what they said would make sense.

I suspect the engine temperature on the clock is not that accurate - it has shown 106 degrees C before and nothing was boiling away (I know it's under pressure, but I would expect to hear something if that temperature was accurate)

fanarrfnarr · Post by **fanarrfnarr** » 20 years ago

aha! i know how this one works! at about a 50:50 mix of anti freeze and water the fluid will boil at approx 110 deg celcius. as it's pressureised that will raise the boiling point of the fluid by about another 25 degrees, so in theory it won't boil until about 135 deg celcius (in the same way water boils at iver 100 deg in a pressure cooker), which is why you won't hear anything.

and thats about the sum of my cooling knowledge.

now i'm going to double check myself and pray that i'm right...... wish me luck!

just outta curiosity, my bike runs at about 85 deg under normal running and low 90's if i ride it hard, the fan comes on about 103-104 deg's. how does it compare to everyone elses?

Richie · Post by **Richie** » 20 years ago

just outta curiosity, my bike runs at about 85 deg under normal running and low 90's if i ride it hard, the fan comes on about 103-104 deg's. how does it compare to everyone elses?[/quote]

Normal running temp 84-85 deg low -mid 90's hard riding'low 100's before fan kicks in.

Richie

the oaf · Post by **the oaf** » 19 years ago

Dirt on the points.

louisbastow · Post by **louisbastow** » 17 years ago

fanarrfnarr wrote:55 years agoaha! i know how this one works! at about a 50:50 mix of anti freeze and water the fluid will boil at approx 110 deg celcius. as it's pressureised that will raise the boiling point of the fluid by about another 25 degrees, so in theory it won't boil until about 135 deg celcius (in the same way water boils at iver 100 deg in a pressure cooker), which is why you won't hear anything.

and thats about the sum of my cooling knowledge.

now i'm going to double check myself and pray that i'm right...... wish me luck!

just outta curiosity, my bike runs at about 85 deg under normal running and low 90's if i ride it hard, the fan comes on about 103-104 deg's. how does it compare to everyone else's?

Well i was pretty sure my fan was cutting in at 89°C but today it got pretty warm (Brisbane aust) and I let it idle until it cut in... 109°C-110°C !!

Anyway I'm not happy about it cutting in so late... but what can you do. where can you get temp switches that cut in at different temps?

RaptorMan · Post by **RaptorMan** » 17 years ago

Mine runs 83-85 normal upto early 90`s if giving it some

Fan cuts in at 107 and has done since new,never overheated yet

Cavia · Post by **Cavia** » 17 years ago

Yep,
same as raptorman!