my speedo in any gear when on the gas just jumps around it goes from 0 to 130 in like 1 second and it keeps moving around untill i let off the gas then it reads a semi accurate speed. i need help. is this cable or electronic? what the hell is going on i keep passing cops and dont know if they are going to pull me over or not. sometimes when i hit the gas it goes to 0 somtimes 130 and sometimes just bounces. if you can help me it will be greatly appreciated. thank you
