[4seasons69]

I don't know as much about older obd1 ECUs but I would say that it could. Individual drivers and different things can burn it inside of a computer and quit working. All the pcm I've replaced at work the check engine light has always come on when you turn the key on


I would email Thomas at ecmlink and ask him abut the not connecting issue. He was always really helpful when I had link. Also hop on the link forums and do some searching