• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

What temp does you fan come on at?

Y

yoshiboldor

Husqvarna
C Class
Hi, I was reading on a post that the fan (09 TE450) comes on at 97C. I have just tested my coolant temp sensor with iBEATS and the sensor it fine. I heated the sensor up to over 100C and the fan still didn't come on. But if I disconnect the sensor so the computer thinks there is a crazy high reading it comes on.

Anyone know what the target temp for the fan is? and is there a way of resetting the value that activates the fan?

Thanks
 
I've had multiple temp sensors, and they can vary, from 210F to 230F, 98C to 110C,

The crazy high reading is the signal to the ECU that the temp sensor is bad, and the fan should come on if the temp sensor is unplugged.

I don't think there is any way to manipulate or change the ECU temperature for turning on the fan.

Get a pair of long wires and hook them to your battery, and unplug the fan and use the 2 wires from the battery to test your fan, it should come on and if it does, you probably have a bad connection, loose wire or bare wire somewhere.

HuskyWTSmeasure_zps6651c6a9.jpg
 
Get a laser temp reader like the one in my pic, get the bike hot and point the laser, as close as possible, at the brass nut at the base of the temp sensor.
 
Yeah I will do that I have an ir thermometer. but I can just leave it hooked up to ibeats and see what the temperature anyway.

I actually took the temp sensor out, put it in water at various temperatures and checked with a thermometer. The temperature ibeats was showing was identical to the thermometer, I went from 20C right up to 101C (steam off boiling the water) the fan didn't come on.

So the coolant sensor it OK.

But like I said if I disconnect the sensor ibeats comes up with the high temp warning and the fan starts?
 
My engine temp sensor might be shot. 2008 TE250. I hadn't noticed the fan turning on at all since I've had the bike (mid-January 2015). I disconnected the fan and gave it 12 volts and sure enough the fan spins. I removed the temp sensor cable from the brass nut, turned the key on, and the fan spins. This leads me to believe that the wires, connections, relays, etc. are OK and the sensor itself has gone bad. I don't have a temp gun but I idled the bike for about 10 minutes and the fan did not start. Any further troubleshooting ideas before I start looking for a new sensor? Anyone know the part number and where I can find one?
Thanks gents!
Tony
 
should come on at 200 F give or take 10 degrees.
More importantly if the temp switch (sensor) is bad it will send incorrect signal to ECU and your bike will not run at it's best or can even run horrible, similar to a bad ignition coil. If it is bad you cannot simply bypass it as I said earlier this is a sensor/switch so bypassing it will send the wrong information to your ECU. Good news, it's only $14. If in doubt, change it. with bike cool, radiator cap tight, remove and replace with very little coolant loss!
 
Dirtbikeerdad said:
should come on at 200 F give or take 10 degrees.
More importantly if the temp switch (sensor) is bad it will send incorrect signal to ECU and your bike will not run at it's best or can even run horrible, similar to a bad ignition coil. If it is bad you cannot simply bypass it as I said earlier this is a sensor/switch so bypassing it will send the wrong information to your ECU. Good news, it's only $14. If in doubt, change it. with bike cool, radiator cap tight, remove and replace with very little coolant loss!
Click to expand...
Thanks! I ordered a couple sensors. Will install one and keep you all updated!
 
Good idea. Cheap enough to at least rule it out. I always keep one in my backpack. So if it doesn't fix your problem keep your old one as a spare and your not out anything. Good luck hope it fixes your problem.
 
210 degrees F on a brand new temp sensor. Old one was defective and the fan would not come on at all.

Temp reading off the Trail Tech vapor via coolant sensor.
 
New sensors arrived and installed one right away. I didn't have much coolant loss, only a few droplets, so the level was still above min. in the radiator.

Confirmed I had a failed sensor. The outside temp was 55degF and the fan came on after 12 minutes of idling. Interestingly enough, the fan ran for only a minute or two and then stopped. I guess it's all good.
 
Atacama said:
New sensors arrived and installed one right away. I didn't have much coolant loss, only a few droplets, so the level was still above min. in the radiator.

Confirmed I had a failed sensor. The outside temp was 55degF and the fan came on after 12 minutes of idling. Interestingly enough, the fan ran for only a minute or two and then stopped. I guess it's all good.
Click to expand...
Can you provide a link to the sensors?
 
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