Car: 2000 Focus zx3
Software version: 6.1
Whenever i do a data log with live link, my temp gauge goes from normal operating temperature to all the way cold and then back to normal. also my tach says that i am idling at 1250 and the xcal say i am at 1350, also the tach drops to 0 rpm at idle and then back to normal, the check engine light flashes on and off also. my car also gets a really rough idle whenever it is plugged into the live link. i don't have a clue on how to fix this, i need some help.