| Author |
Message |
    
Teddagreek
| | Posted on Thursday, October 12, 2006 - 11:36 pm: | 
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I've been having issues that my fan never comes on when I'm driving I can drive a full day in the florida heat dogging it and it will never come on.. Took it to the dealer and they said they ran a full check and every thing was okay..
Question how do you check the Sensor?? if the sensor is bad how would you know if it was off 30% + or - the real temp..
any answers would be appreciated.. |
Naustin
| | Posted on Friday, October 13, 2006 - 09:15 am: |
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if you get the VDST software from American sport bike, it will tell you the voltage and the corresponding temp reading the ECM is getting from the sensor. You could then hook up an oil temperature gauge somewhere and compare the oil temp to the head temp. They should be pretty close to the same.
When I hooked up the VDST software prior to starting the bike after it had been sitting overnight, the engine was basically the same temp as the air, and the ETS showed basically the same temp as the thermometer in the garage. Then I started the bike and watched the ETS rise. It increased steadily with no big jumps or lags. When it got to normal ~ 280 degrees - I went for a ride. When I got home it read 320. This all seemed pretty normal, so I didn't bother verifying it with an oil temp gauge.
Nick |
Ricochet
| | Posted on Saturday, October 14, 2006 - 04:04 am: |
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Ted, The service manual has a chart that shows resistance vs temp. When my fan quit, an ohmmeter showed the resistance to the one wire sensor to be infinite, wide open circuit. |
Teddagreek
| | Posted on Saturday, October 14, 2006 - 09:05 am: |
|
I don't have a break out box. I guess I could just unplug the ECM...
I have the manuel I'll break out the fluke and check it out today. |
Ricochet
| | Posted on Saturday, October 14, 2006 - 01:34 pm: |
|
Ted,
A quick check while you have access to the sensor is just ground the wire to the ECM and turn the ignition on, the fan should run. Use a small paper clip, careful not to bend open the connector, avoiding causing problems with loose connectors later. I also found you'll need a sensor socket to change the sensor, I just took an old 13mm deep and used a cutoff wheel in the die grinder to chop out the side. Crude, but it did the trick the night before this summer's Buell homecoming. Steve |
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How can you tell if your Engine Temp Sensor is bad