Quote:
Originally Posted by
Macca2801
It's a very definitative test and for major manufacturers like Caterpillar working with hundreds of thousands of dollars in single engines they
test their coolant senders with a glass thermometer but if you think the xt engine is worth more or more sofisticated then fill your boots.
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I know, but to be fair you didn't mention that before! Originally you only mentioned taking out the thermostat to test it with a thermometer...
Quote:
Originally Posted by
Macca2801
You can pull the thermostat and suspend it in a kettle with a thermometer beside it and increase kettle temp watching for the results as described.
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Not the sensor, which you originally implied was best to test in situ (no mention of testing it against a thermometer?)
Quote:
Originally Posted by
Macca2801
You can test the temp sender without a diagnostic tool and just use a multimeter (if you have one)
Measure the resistance at the sensor pins while the bike is cold and at around 20degC the resistance should be 2280-2630ohms and evenly change down to 138-145ohms at 110degC.
That will give you a good idea of the temp, ie pop clip and measure when cold, then connect sender and idle bike till fan kicks in. Soon as it kicks in, kill bike pop clip and measure again. If you temp gauge is correct and the fan is kicking in at 109deg C then the sensor should be reading 140ish ohms.
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Man this is hard work!
All I originally said is "you'll need to take the sensor out to test it", which indeed you will
have to do to measure the resistance
against temperature with a glass bulb thermometer as you quite correctly say in your last post. You don't need the diagnostic tool to do this - I never said you did for this. All I said you'd need a diagnostic tool for was to "check the coolant temperature that the ECU is reading".
Anyway, in a nut shell, I think we have finally established/agreed in a roundabout way that, to test the engine coolant temperature sensor on an XT you need to:
1) Remove it
2) Heat it up in water with a glass bulb thermometer
3) Measure the resistance against temperature