Thanks. I'm not going to fiddle with it though. She goes to the indy on Tuesday so they will take care of it for me.I would assume if the temp goes to -128 either you have a really bad sender or you have a bad connection between the sender and the plug??
Not sure if the temp sender is positive or negative temp coefficient?? I guess a way to simulate the problem is to unplug the temp sender and see what way the gauge goes, it is pegs, I would be looking either a bad ground or a bad terminal in the temp sensor connector.