What was the exact code number?

130 bank 1 o2 sensor bad wire bad sensor bad ecm

How did you determine that the sensor was good?

contanutiy check

truck ran for about 6 months with sensor un plugged but now back to running like crap i know chance of bad ecm is like 1 in a1.ooooooo so im wondering if bad wire really need truck have high performance mustang hard to drive in snow live northeast pa worry about salt and other motorist more than my abilites

the truck runs as long as you wanna run wide open tough to drive in snow wide open or spinning wheels

[quote]contanutiy check[/quote]

That isn't going to tell you a thing. You need to read the actual voltage signal and see if it responds to forcing it rich and forcing it lean. You really need a good scan tool and DVOM or scope.

does same thing with new sensor

was thinking on trying o2 simulator

Obviously you have your own way of doing things and they don't match mine so I've helped you all I can.

actully you didnt tell me anything i tested by instruction in repair manual i have a bad wire cause i wiggle wires around on computer and truck is running fine so now just got to track down bad connection or broken wire the world doesnt revole around ur thought process but thanks for ur reponse anyway later