[DiGGM95]

You may be getting a misfire cel (idk much about obd2) which a wire coming loose at the dist. or plug would cause. About the spinning, do you mean from a dead stop, or foot braking it? If its from a dead stop, your posi is probably still good. With the high stock 3.08 gears and nothing else, it should hook. Imo spinning isnt winning...