Thank for answers, all of you.
Problem still not solved.
You all need more details.
It is TF rear motor, it is 7 phase motor , I took off wheels for truing, but on my last ride before it I notice that motor was pulsing/not working fluently/ as usual.
Next I fixed my battery board inside front wheel where comm port was shorten by white deposit.
Before final bike assembly I opened rear motor with controller in it just to check for water/condensation damage, pulled two 2 tiny pin connectors inside and applied dialectric grease to them. Wires from these connectors goes into windings of electromagnets. I guess they are not connected to heavy bare windings wires. Are they temp sensors i GUESS, cannot be hall sensors inside pole winding wires?
Why only 2?
I thought about faulty hall sensor throttle.
I have a feeling problem might be outside of wheel with faulty hall throttle.
Could such throttle cause this?
In general motor wheel on TF fits only one way.
Thank you again for answering
MC