Wanted: ES120-24 temp sender.

Garnett1957 said:

Hi All.....
I have one of the very early 961s 2010 with the Honeywell head sensor (ES120-0024), and just asking if the ECU can be reprogrammed to read the Bosch head sensor ES120-0030,
I found a spare sensor but just a little worried if they break what to do as tried the Bosch sensors in it an runs like crap till hot. cheers Rob

Click to expand...

As Kev and Cliffa have pointed out, the sensor on the early bikes with the Omex ECU is a KTY type. With an NTC sensor (Bosch 0-280-130-026 / Honeywell ES120-0030) the resistance decreases as the temperature increases whereas with a KTY sensor (Honeywell ES120-0024) the resistance increases with temperature. You will confuse the ECU if you swap an NTC sensor with a KTY one and vice-versa, as you have found out.

If it was me I wouldn't worry about it, given that you have a spare sensor. It would be worth checking that the spare one works so that you know it's a good spare. In the worst-case-scenario if both of your sensors fail you have the option of a Delta 400 ECU, or maybe a Typhoon from someone who has switched to the Delta. Those ECUs are setup for an NTC sensor so availability of the sensor wouldn't be a problem. So there is a solution should the worst happen, albeit at a cost.