Help

[Chop chop]

Just plugged an old speed passion motor into car to check and see if it working still (going to put in different car). Motor wouldn't work on using throttle but suddenly the motor went really hot and esc straight away after trying to work it out. I unplugged it.

Have connected back to original motor which I know worked and no throttle and esc goes hot very quick again.

Seems I may have screwed up my Esc ........any thoughts guys?