Hi everybody,


I'm driving an XT660X (2006) and I'm from Belgium.
Last year I was on a ride and my bike gave me the RED overheating warning. I've seen that my fan wasn't running, so I looked for a new one and replaced it. Some rides later I had the same situation. Did some troubleshooting and found that my Fan-fuse popped. So changed that.
Again some rides later I could hear my Fan spinning and I was happy to hear it.
Now, 1 year later, during a very slow ride I got again the red indicator telling me that engine is running HOT. I could hear my fan running and I felt warm air against my legs. Went to a dealer and asked him if he could find anything special and I've got a "No Problem found" answer.
Lately I was doing my normal commute and again I've gotten the "engine is running hot" indicator. It was a hot day (very hot for Belgian standard) and I wasn't picking up any good speed.
Now I'm thinking that my waterpump could be the cause of the problem. Any tips and tricks to sort this one out? (Maybe I should start checking if that waterpump has also a fuse that could pop)
I'm also unfamiliar with the diag mode of the bike. So if I need to seek something there, please tell me step-by-step how to get there. I'm more familiar with 0's and 1's

Afaik the waterpump is a mechanical item..and its working if your fans coming on .
How old is the coolant itself?..Wouldnt hurt none to flush the system through a few times and change the coolant. Its a quick,simple and cheap job.
HTH.

Never changed the coolant. That will be my next job then.
Thnx for the tip.

Double check the actual water temperature against the dash temp reading, heat the bike up to dash temp 50C put a thermometer in the radiator or use a heat gun, what are the two readings?

If the fan is coming on the thermostat is open & there is circulation from the pump. I would also reverse flush the radiator using a garden hose.

They should be close.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

Hi Kev,


Like stated in my first post, I'm a noob regarding the dash diagnostics. How can I read that temp on the dash?
And what do you mean with "reverse flush the radiator"? Sounds like the opposite way of a normal flush. So that would mean pumping water the opposite way it should normally run?
Sorry for the noobish questions.