Ok guys, got a 96 v6 5-speed... my stock tach is starting to jump around some.. it still reads acurately but sometimes its like it pauses for a second and then jumps up, or it will drop to 0 and then come back up real quick.. is it just the reader? sensor? or what? What can I do to fix it? because im trying to sale my car in about a month or so. thanks.. also if you know of any nice gt's for sale in alabama let me know.