Hi all. A recent new belgian owner of a Versys here.
After my 2008 XT660Z Tenere was stolen last month I started looking for a replacement that was comfortable for long trips and could be picked up at reasonable 2nd hand prices. After test riding the Versys it seemed to fit the bill nicely.
So I got myself a 2007 silver one with 20000km on the clock.
Riding it reminds me abit of my old TDM900. It has a little less grunt, but is much more eager to go to higher revs and a bit more nimble as well.
I was expecting to have a lot of fun with it, but the first 3-day trip to the French Vosges last weekend caused me a bit of a head-ache. The first symptom was boiling cooling liquid. It was ok while riding, but at a stop it would start boiling for about a minute. Ambient temps were not really high, about 22C.
It seemed to settle quite quickly though and the level would not reach the overflow pipe. So we just continued our ride.
But when we came to a busy village center with a bit of a traffic jam it started pissing out cooling liquid through the overflow pipe. I also noticed by now the radiator fan would never kick in.
I have read a number of topics on the problem here on the forum and found some helpful tips to identify the cause.
So I started with checking the fan was still functional. Hooking it up directly to the battery quickly taught me it was working just fine.
Next I measured the fan relay. everything seems to be ok. I will try to bypass the relay by directly connecting pins 17 and 20 of the plug that goes in the relay box. That should give me complete certainty that it's not the relay, right?
I read on the forum as well that the radiator caps sometimes leak a bit so that the system can't get to optimal pressure, making the coolant boil at lower temps than required. But if my problem was with the radiator cap the fan should still kick in before the coolant started pissing out of the overflow, no?
The only other thing I can think of is the water temperature sensor; What is the easiest way to check this? Can I just short the pins in the plug to bypass the sensor and make the system think coolant temps are high enough to start the fan?
Or are there other possible causes I may be missing? Electrickery is not exactly my forte, so I am happy to learn.