Honda mode anc 125

[pintail120]

My bike has some issues
when I start the expected behaviour of a high idle occurs, there after the idle speed drops down as I assume the ECU encourages this high idle to get the bike to warm up. Once the idle rpm has dropped lower it idles very erratically, any ideas why this occurs ?
recently the bike has been surging a lot while driving normally and has a loss of power up hills with an increase in consumption.
Any ideas where I should start looking ?

[pintail120]

I think this issue is caused by the TPS, removed my TPS and measure the ohms across the centre pin and the two side pins, when applying any light movement to the sensor the ohms swing wildly indicating a failed potentiometer.
Seems this might only come as a kit in the UK:
https://www.bike-parts-honda.com/honda- ... 22/1/15100
The single part at aliexpress:
https://www.aliexpress.com/item/1005004 ... 3647%21rec

I think this might be the honda part:
16400-K25-901

[pintail120]

reply from honda, cannot buy the TPS as a single unit, is that coincidental or what:

the TPS only comes as part of the Throttle Body Set at £226.93... So hopefully it's not your TPS that's causing that issue