I went to check my cel code that popped up the other day on a trip on the highway and the screw on the side of the ecu just kept spinning and spinning, I tried to find a stop at the Clockwise side and the Counter-clockwise side but nothing, just keeps spinning.
How bad is this and what should i do..

 

you prob broke the stop. if you turn is very gently you will feel the resistance point where the stop should be.