Hi all I need a bit of help understanding correct thermistor for a faulty motorcycle low fuel light. The thermistor sits in the fuel tank and when the fuel drops below it heats up and the resistance drops and triggers the low fuel light.
After a fair amount of searcing on google I found other people with the similar issue had fitted a NTC 1KΩ. This did not cure the problem for me so I did more testing. I can turn the light on with a 56Ω resistor in place of the thermistor but the light will not come on with a 68Ω resistor so the trigger must be between these two values.
What I cant get my head around is for instance a 100Ω thermistor is 100Ω at 25°C but how hot would it need to be to trigger the light at about 60Ω?
Also not sure how hot the fuel in a motorcycle tank will get and affect the thermistor reading?
thermistors are available in 68Ω and 100Ω or do I need a higher value to compensate for fuel temperature?
The bike is a 2004 GSXR 1000cc and the genuine part is £178........ thats why I would prefer using a £1 thermistor.
Thanks in advance for any help
ceefna
After a fair amount of searcing on google I found other people with the similar issue had fitted a NTC 1KΩ. This did not cure the problem for me so I did more testing. I can turn the light on with a 56Ω resistor in place of the thermistor but the light will not come on with a 68Ω resistor so the trigger must be between these two values.
What I cant get my head around is for instance a 100Ω thermistor is 100Ω at 25°C but how hot would it need to be to trigger the light at about 60Ω?
Also not sure how hot the fuel in a motorcycle tank will get and affect the thermistor reading?
thermistors are available in 68Ω and 100Ω or do I need a higher value to compensate for fuel temperature?
The bike is a 2004 GSXR 1000cc and the genuine part is £178........ thats why I would prefer using a £1 thermistor.
Thanks in advance for any help
ceefna