Guest Posted May 10, 2008 Share Posted May 10, 2008 (edited) Ok, the radiator fan isn't coming on at all so I thought I'd better fix it as the weathers improving! If I ground the wire going into the fan switch the fan comes on(fan Ok), I fitted a brand new thermostatic fan switch(switch Ok), but it still isn't coming on. I thought it might be the contact so scratched up both sides, but still no joy .I also stripped and moved the earth connection from a loose radiator connection to a firmer point on the body.Any ideas?http://farm3.static.flickr.com/2347/2481402286_fa79e45182_m.jpg Edited May 10, 2008 by Anonymous Quote Link to comment Share on other sites More sharing options...
Korben Posted May 10, 2008 Share Posted May 10, 2008 It's probably the thingy bit that takes the temp of your engine. Normally cheap to replace.Thermastat or something.If you have not guessed I ain't technical!! Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 Nah, thats what I thought but I installed a brand new thermostatic switch. Quote Link to comment Share on other sites More sharing options...
Korben Posted May 10, 2008 Share Posted May 10, 2008 That's me out of ideas then. Quote Link to comment Share on other sites More sharing options...
DutchMick Posted May 10, 2008 Share Posted May 10, 2008 is it becoming too hot? Quote Link to comment Share on other sites More sharing options...
cyberwolf Posted May 10, 2008 Share Posted May 10, 2008 (edited) have you check for any brakes in the wires connect the fan up so its running and move the wires see if it cuts out if thats not it then im with korben that's me out of ideas then Edited May 10, 2008 by cyberwolf Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 (edited) I'm keeping an eye on it! Only gets high in town with 5 or 6 successive redlights (London is Sh*tsville) ,I pull over and let it cool just before it hits the red. A/B/Mway it's fine. Fan stays on constantly when shorted. Checked continuity of fan->switch wire, and is fine.I am ABSOLUTELY STUMPED! (I can't believe I'm listening to Def Leppard 'Hysteria' again, I really am a sad old man..) Edited May 10, 2008 by Anonymous Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 Nooo u need to sort it, or its gonna go...http://www.hgsc.bcm.tmc.edu/downloads/graphics/Bang.jpg Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 Oooerrr, don't want that..... Quote Link to comment Share on other sites More sharing options...
cyberwolf Posted May 10, 2008 Share Posted May 10, 2008 wait for one of the know it alls to come on akey or stu_m Quote Link to comment Share on other sites More sharing options...
Stu Posted May 10, 2008 Share Posted May 10, 2008 whats the temp getting up to ?are you sure the fan should actually be cutting in ? the bike could be ok and its not getting hot enough Quote Link to comment Share on other sites More sharing options...
Stu Posted May 10, 2008 Share Posted May 10, 2008 wait for one of the know it alls to come on akey or stu_m i will remember that when you need help Quote Link to comment Share on other sites More sharing options...
cyberwolf Posted May 10, 2008 Share Posted May 10, 2008 wait for one of the know it alls to come on akey or stu_m i will remember that when you need help ok soz you dont know nothing about bikes is that better Quote Link to comment Share on other sites More sharing options...
Stu Posted May 10, 2008 Share Posted May 10, 2008 Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 No digital readout on my 1996 CBR , but it's getting to just below the red. I'm scared to push it any further! Quote Link to comment Share on other sites More sharing options...
Stu Posted May 10, 2008 Share Posted May 10, 2008 ideally you need to check the temp of the coolant while its warming up if the fan doesnt cut in by 111 degs c then start worrying have you checked the coolant ? it could be very low and under the sensor for the fan im not too clued up on the cbr's to be honest but most older bikes are the same Quote Link to comment Share on other sites More sharing options...
cyberwolf Posted May 10, 2008 Share Posted May 10, 2008 can the cooling system block up?? you could try washing the old coolant out and putting new coolant in. you thoughts on that stu as i know feek all about it Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 (edited) Coolants up to level in radiator and reservoir. Fresh in a couple of weeks ago. Thermoswitch is near base of rad as well, so I'm confident it's covered. Edited May 10, 2008 by Anonymous Quote Link to comment Share on other sites More sharing options...
Stu Posted May 10, 2008 Share Posted May 10, 2008 yes it can block up if the coolant is old it will be sludgy and block the passage ways i would give it a flush and put new coolant in and go from there Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 Guess I'll wing it for now. I'll get a toggle switch from Maplin and cable-tie it under the fairing! Too hot at lights? Hit the switch! How's that sound? My Bionic-bike! Quote Link to comment Share on other sites More sharing options...
cyberwolf Posted May 10, 2008 Share Posted May 10, 2008 have you check the fuse? Quote Link to comment Share on other sites More sharing options...
Guest Posted May 10, 2008 Share Posted May 10, 2008 Fuse is ok. Quote Link to comment Share on other sites More sharing options...
Guest Posted May 11, 2008 Share Posted May 11, 2008 Nipped down to Maplins, got switch and connectors, all done! What do you think?http://farm4.static.flickr.com/3258/2483521754_7d0cc8cb79_m.jpghttp://farm4.static.flickr.com/3240/2483521676_b1da99ebe6_m.jpg Quote Link to comment Share on other sites More sharing options...
Guest Posted May 11, 2008 Share Posted May 11, 2008 well it will go on/off now but annoying prob that---must be a thermo switch wire out -- you got a new unit so must be ok that--and you flushed system of gunge--that is basically it Quote Link to comment Share on other sites More sharing options...
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