I a c not operate well,when i take off the sensor out of the bike and put the bike switch in on position the sensor take the right position .i put the sensor back to the throtle body and start the bike the sensor work good and i have coret low rpm but if i put the switch in off position the sensor take a bad setin and if i start the engine again the bike dont operte good and i have to moch rpm.

 

What year is your bike? Did you clean the IAC valve in the throttle body?
Just spray some cleaner in it while activating it on and off with your ignition switch.

 

Will WD-40 work as cleaner?

 

I wouldn't use it as a cleaner for injectors or carb. There are various sprays at the auto parts stores specifically for cleaning injectors/carbs.

 

I have this acting up sometimes..So far carb cleaner has been working..