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Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

Thread: radiator fans not turning on until 234 degrees '01 929 Reply to Thread
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  Topic Review (Newest First)
05-14-2013 12:01 PM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

Nah, just the reading is higher.
05-14-2013 11:14 AM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
There has to be some sort of leakage onto the signal line from the temp sensor. Don't know whether it'd be coming from within the clocks themselves (even from the blue high beam notification light), or if it's coming from outside the clocks.

Just bear it in mind that she's hotter with the high beams on - kinda like Jessica Alba.
hahaha that made me LOL. she isn't ACTUALLY running hotter though with the beams though is she? even with the engine off, the temp gauge jumped.
05-14-2013 11:07 AM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

There has to be some sort of leakage onto the signal line from the temp sensor. Don't know whether it'd be coming from within the clocks themselves (even from the blue high beam notification light), or if it's coming from outside the clocks.

Just bear it in mind that she's hotter with the high beams on - kinda like Jessica Alba.
05-14-2013 10:18 AM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
When the bike is cold (say 70 degrees), does it shoot up to 230 when you put the highs on then, or does it just jump up to 80?
Alright, so I just turned the bike on. First of all, the temp gauge didn't start showing a readout until the 90's. As soon as it did, I flipped the high beams on, and the temp jumped up by around 4-5 degrees. I did this a few times to confirm as the engine was getting warmer, and with every flick of the high beams, the numbers did the same.

At 120 degrees, I turned the engine off but left the ignition on. The gauge still read 120, and when I flicked the high beams on again, it jumped to - you guessed it - 124.

The times when it jumps by like 10 to even 20 degrees higher is when the engine is around 225. So again, I doubt my bike ever actually overheated, and I'm also thinking that maybe the bike is running at good temps, i.e the fans actually come on at 224ish (which i've read is normal), but the readout says 228?

This is all I have observed. cheers guys for all of your help!
05-14-2013 5:28 AM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by giosoccer20 View Post
haha i love it! do you think you could shed some light on my latest update? with the high beams causing the temp readout to go up instantly by 10 degrees or even more at times?
When the bike is cold (say 70 degrees), does it shoot up to 230 when you put the highs on then, or does it just jump up to 80?
05-14-2013 5:23 AM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by bladeracer View Post
I think Haynes should be commissioning you to do their wiring diagrams from now on Sky :-)
They turned me down - apparently the work I do is too good
05-14-2013 3:21 AM
jondog9
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by bladeracer View Post
I think Haynes should be commissioning you to do their wiring diagrams from now on Sky :-)
Isn't that the truth?!
I spent $26 on a Haynes manual for my work van.
Elementary, my dear Watson.
Too basic for me.
To tell you the truth, the last time I looked at any Haynes manual was for my Dad's 64 Chevy Nova 6 cylinder, points and condenser, leaded gasoline, single barrel carburetor. The good ole days.
05-13-2013 11:06 PM
bladeracer
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
Just realised I put the extra wiring in the wrong place. It needs to be before the radiator switch, not after. (that's what happens when you're playing with Paint in work)


I think Haynes should be commissioning you to do their wiring diagrams from now on Sky :-)
05-13-2013 10:40 PM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

haha i love it! do you think you could shed some light on my latest update? with the high beams causing the temp readout to go up instantly by 10 degrees or even more at times?
05-13-2013 5:30 PM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

Just realised I put the extra wiring in the wrong place. It needs to be before the radiator switch, not after. (that's what happens when you're playing with Paint in work)

05-13-2013 1:19 PM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
You can add in a manual fan switch to bring the fan on when you're stuck in traffic if you like. You need to add the bit in YELLOW. DO NOT break the connection in the green bit (the stock wiring) or the fan won't come on automatically at all. Just splice into it.

damn, i have a pretty significant update to make... I had this suspicion for some reason, hence why i mentioned the fact that I had the headlight and turn signal problem due to a ground wire problem 2 days ago that I fixed.

as soon as I turn the high beams on... the temp gauge reads around 10 degrees higher..INSTANTLY. I doubt there is any way the coolant actually gets 10degrees hotter within a second, so something is wrong electrically even though all of the lights and readouts work properly? at one point when i was stopped and the temp was around 220, i turned the high beams on and the temp jumped to around 240-235
-during normal riding, the temps stay perfectly normal. anywhere from around 172ish to 185ish
-returning from my ride just 20 min ago, I let it idle and watched closely to see when the fans come on. they come on at 228-229, not 234. I think the 234 was the high beams messing with the readout yesterday

Yesterday when it said i overheated...i did in fact have my high beams on. which probably means that i wasnt actualy running hot, it's just that the readout was saying i was..?

Also i was dripping oil from the shifter...but i'm pretty sure that was extra lube coming off the chain because i sort of overdid it with the lube yesterday haha. there is backspray on the sidewall of my tire and the chain guard too

-still dripping oil from the drain bolt though, i was hoping tightening it would help, but it probably needs a new crush washer..hopefully nothing more
05-13-2013 12:52 PM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

You can add in a manual fan switch to bring the fan on when you're stuck in traffic if you like. You need to add the bit in YELLOW. DO NOT break the connection in the stock wiring or the fan won't come on automatically at all. Just splice into it.

05-13-2013 12:10 PM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
No - it's not the thermostat you'll be removing. That's to the rear of the engine and slows the flow of coolant when the engine's cold. It's the switch that plugs into the front of the rad you need to replace.

The thermostat it part 2 on this page:

Ronayers.com Microfiche Honda>Motorcycle>2001>CBR900RR>THERMOSTAT
ah okay gotchya. i appreciate your's and everyone's help! are there any replacement parts for part #20 so that I could pick up at a store so i dont have to wait to get it shipped? This bike is my only mode of transportation at the moment lol
05-13-2013 11:57 AM
Sky91
Re: radiator fans not turning on until 234 degrees '01 929

No - it's not the thermostat you'll be removing. That's to the rear of the engine and slows the flow of coolant when the engine's cold. It's the switch that plugs into the front of the rad you need to replace.

The thermostat it part 2 on this page:

http://www.ronayers.com/Fiche/TypeID...oup/THERMOSTAT
05-13-2013 11:16 AM
giosoccer20
Re: radiator fans not turning on until 234 degrees '01 929

Quote:
Originally Posted by Sky91 View Post
You'll just need to unplug the electrical connector, unscrew the old sensor, and put in the new one (don't forget the teflon tape!!). Chances are you'll lose a bit of coolant so that'll need to be topped up as well. Grab a copy of the service manual - it gives a walkthrough in there. If you've got the toolkit that came with the bike, you have more than enough for the job
Sorry for asking noob questions The part that I'm replacing (part #20 switch/thermostat), In the service manual it talks about thermostat removal from the thermostat housing, is that what I'd be doing? I've just heard some guys refer to it as a switch, others a "sensor", and also a thermostat, so that's thrown me off a bit
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