Rusty rudder
Member
Have a 2005 mercury 90hp 2 stroke,was just put on boat with all new cables,controller,was running motor on hose today,and motor trimmed up by it self.When I trimmed it back down with the controller it would trim back up then stop then it would trim up again,always trimming up,thinking about unhooking trim bottom on motor to see if it stops.I unhooked the battery so it cant trim up at all.Any advise would be welcomed thanks.