Yesterday while riding home along the freeway, my bike was nearly redlining on the temp gauge. i dont think the fan is kicking in early enough. does anyone know how to adjust the temp the fan kicks in at? i had a squiz at the fzr400 manual and could'nt find anything in there.
No way to adjust it unfortunately. Most common modification is to wire the radiator fan to a simple relayed switch then turn it on manually when required. Might be worth mentioning that the thermoswitch that controls the thermofan is at the top of the radiator, and if your radiator isnt full (ie. partially empty) then it won't engage the thermofan at the proper temperature; the reading on the dial may still show redline but the fan won't kick in. Might be worth checking your fluid levels... just incase.
would be strange if you even needed the fan when riding on the freeway - normally at freeway speeds the air cooling would be enough to keep the engine temp well under redline. My old fzr used to only get hot in stop-start traffic and then it would regularly head up towards the red - I'd be inclined to suspect the radiator and/or coolant level as Koma said - try flushing the system to make sure its not blocked up - its a pretty easy job from memory.
It was 40 degrees when this was happening. i think i might do a flush. i have no idea of history on this bike, so it may have been ages since it has been done.
I rode in 40 degrees the other day and it was only going near redline in start stop traffic at lights, on the freeway it was cool as always and yours should be too.
do you guys think it is viable to rig up a switch to manually control the fan? has anyone else done it? coz it would be good to have it running constant when in traffic, not just before it hits redline temp. i have noticed a drop in power (although slight) when it starts gettin real hot. that normal?
I rigged mine up with a switch and when I was riding it never got over half when running it, If I turned it off and really took off hard the temp would go up real quick., I have a light on mine so when its on I know when riding, don;t turn it on if I'm riding around normal and going a resonable speed. Person's own preverence I think, I wanted to be able to turn it off If I were stopped but forgot to turn off when I'm checking the lights and stuff when not running the motor. Have fun!!!
how did you do it george? was it difficult? coz i would like that choice of when i have the fan on or not
my fan switch was stuffed when i bought my bike so i bought a toggle switch from supercheap made a bracket out of a peice of alloy angle and mounted it to the fairing bolt under the throttle it to has a light . I have no problem with over heating at all
disconect wires from switch to fan there are only two redirect through your new switch .to find wires follow them from the fan
As Hawkeye said, you just need to disconnect the wires off the fan. I played around with trying them a couple of ways on my toggle switch and found that one way they would have the light on always (in switch) and the other way I had to earth the third teminal to get it to come on when the fan was on.. Don't have any trouble with it, seems to work great. Good Luck.
i did it. put the switch into the connecter for the 2 wires that go into the thermostat. didnt even have to cut any wires.
Hehe, now you see why there isnt a write up for it! The guide would be all of two lines... pull cables from thermoswitch, wire into manual switch. <!-- s:lol: --><img src="{SMILIES_PATH}/icon_lol.gif" alt=":lol:" title="Laughing" /><!-- s:lol: -->
i was of the impression it was the 2 wires from the fan, so i was dicking around over there and getting real pissed off and then tried this and it worked. i was thinking of getting a new thermostat (i think the old one is FUBAR) and running the switch and the thermo in parallel, so the thermo or the switch could turn the fan on. ill post tonite with how it went.
all went well. no redlines today, but it was not as hot as yesterday. <!-- s --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt="" title="Very Happy" /><!-- s -->
Ah fair enough. I can see how it might be a little confusing as to which bit your meant to be rewiring. Ideally we're just trying to reduce the amount of wiring that needs to be redone so in the case of the radiator thermoswitch it would just be replacing the controlling device (thermoswitch) with a manual switch. Ah well, now you've asked the questions i'm sure there'll be a few grateful people out there reading it. <!-- s:lol: --><img src="{SMILIES_PATH}/icon_lol.gif" alt=":lol:" title="Laughing" /><!-- s:lol: -->