I just came back from practing some wheelies and when I went onto the freeway to go home there was some traffic. The bike's temp gauge went up to 221, which is normal, but it didn't come down. It kept going up to around 260 and the red light came on. When the traffic finally opened up, it came down. When I got off of the highway, I pulled one more wheelie and then pulled into my driveway. When I cut the bike off, you could heard the coolant fluid going back into the reserve. I lasted for a few minutes and then I noticed the the breather hose was leaking coolant on the floor. I took off the left fairing and then noticed that the coolant was bubbling. It's about 80 degrees and it's not humid a all. I was wheeliing for about 20 minutes and the traffic was for about 5 minutes. This has never happened before and I don't know how serious it is. Can anyone help me with this problem? Also, I have just changed my ket set and there is a wire connector from my old set, on the ignition, that the new ignition doesn't have. The new set is from a 02 gixxer, mine is an 00. The bike runs so I didn't think anything of it. Is that connector possibly the reason for this problem?

if you're ever stuck in dead traffic like it sounds like you were, it's best to cut the bike off until you start moving again. Letting it idle will just cause the temp to rise faster than the fans can lower it. Once you start moving, the wind (and other factors) will cause your bike's temp to cool down.

-=bmacd=-

long before you get to 260 you should start worrying. it has been 100+ days and I would be sitting at a light for a long time and my bike would goto 221-223 and the fan comes on, then goes back to 220, sometimes up to 226, but right back down. I have never seen 230. If you see 235-240 I would shut the bike off and let it cool. Check your coolant levels too, maybe there is something wrong?

Check fuses, if thats not it check all the connections and if that not it replace the water temp sensor on the radiator. Thats what my problem was. Goodluck!

I know 260 is a litlte high, but why are you guys so skeptical that he hit it? I know i've hung in the 240s for awhile and started panicking.

-=bmacd=-

260 isn't just a little high... it's VERY high.

If your cooling system is functioning properly, you should never hit that temp. Something's wrong.

If your bike stays cool when moving (when air's flowing through the radiator) but overheats like this when stopped in traffic, it's most likely your fan not operating. As said above - check the fan connection & fuse. Bring the bike up to 220 or so idling & check to see if the fan is coming on.

If your bike overheats when moving - it's something else... thermostat, air in the cooling system, radiator damage, etc.

this exact same thing happened when i was at the drag strip. More then likely your fluid in your bike is so low that even the sensor for the fan couldn't even read the temp and never kicked on. Just let the bike kewl down in and the next morning get some nice 50/50 mix and fill the overflow to the appropriate level and start the bike up letting it pull in what is needed. But also it souds really low like mine. So you may just wanna open her up and pour some directly into the radiator. We get 100 + days and i've never gotten over 225 with the fan working properly.

Ok, I'll try and fill up the coolant tomorrow. What about that wire from the ignition? Can anyone with a 00 750 check that out for me. Every other ignition i've seen only has one wire connector. I assumed that since it wasn't happening before I changed the lockset, that wire might be the problem. I'll let you know what happens. Also, do I just put in regular anti-freeze or some other type of coolant?

Update: I checked the radiator and it's full. The overflow tank was empty so I filled it up with 50/50. I ran the bike up to 230 and the fan didn't come on. I'm really starting to think it has something to do with the new ignition I put in. There's a pink wire with a white stripe that just free now. Can someone with an 00 750 check theirs for me? The 01's and up don't have this wire. I'm assuming it goes to the thermostat.

yikes, well if everything is full then ya its something electrical usually. Do check your fuses but besides that I don't think i know anything else to say.

20blks said:

Update: I checked the radiator and it's full. The overflow tank was empty so I filled it up with 50/50. I ran the bike up to 230 and the fan didn't come on. I'm really starting to think it has something to do with the new ignition I put in. There's a pink wire with a white stripe that just free now. Can someone with an 00 750 check theirs for me? The 01's and up don't have this wire. I'm assuming it goes to the thermostat.



you mean orange wire with white stripe? that goes into the fan circuit. if it's disconnected, the fan will never get power.

what you can do is splice the orange/white wire into the orange wire.

Damn, I just realized you guys are in the US and are talking Farenheit and not Celsius. Scared me there for a second!

I thought the whole world used Faren. and the weirdo's used Celcius? http://www.gixxer.com/forums/images/graemlins/lick.gif

somejeffguy said:


20blks said:

Update: I checked the radiator and it's full. The overflow tank was empty so I filled it up with 50/50. I ran the bike up to 230 and the fan didn't come on. I'm really starting to think it has something to do with the new ignition I put in. There's a pink wire with a white stripe that just free now. Can someone with an 00 750 check theirs for me? The 01's and up don't have this wire. I'm assuming it goes to the thermostat.



you mean orange wire with white stripe? that goes into the fan circuit. if it's disconnected, the fan will never get power.

what you can do is splice the orange/white wire into the orange wire.


Cool, I'll try that. So if the fan isn't working, then the coolant doesn't flow. Should I just strip the housing and soldier the wire or is there some type of connector?

20blks said:
Cool, I'll try that. So if the fan isn't working, then the coolant doesn't flow. Should I just strip the housing and soldier the wire or is there some type of connector?



no, if the fan isn't working, the coolant flows but if you end up getting stuck in traffic or in any other situation where there isn't adequate airflow through the radiator, the temps will keep rising rather than being kept in check by the fan.

yes, you can just strip some of the insulation off the orange wire, and splice the orange/white wire to it with a dab of solder. there are also connectors that you can buy to make the connection for you.

somejeffguy said:


20blks said:
Cool, I'll try that. So if the fan isn't working, then the coolant doesn't flow. Should I just strip the housing and soldier the wire or is there some type of connector?



no, if the fan isn't working, the coolant flows but if you end up getting stuck in traffic or in any other situation where there isn't adequate airflow through the radiator, the temps will keep rising rather than being kept in check by the fan.

yes, you can just strip some of the insulation off the orange wire, and splice the orange/white wire to it with a dab of solder. there are also connectors that you can buy to make the connection for you.


If I tap in to the ornage wire, would the fan be on at all times? I don't want that.

no, it will work as it should. even if you hooked up that orange/white wire directly to the postiive battery terminal, the fan would only turn on if coolant temperature reached around 220°f, even if your ignition were off. the orange wire off the ignition switch should only get power when the ignition is on.

Thanks alot. I worked out great. You saved me money. I was gonna buy another ignition.