Re: Tachometer Only Works Sometimes
The problem is in the instrument cluster. If you remove the cluster there will be a flat cable plugged into a single line square pin header. This will be on the back of the area where the display is. If you unplug the board you will find that there will be a solder joint that has a crack surrounding the pin. It is most likely the pin that is separated from the rest by a missing pin. Heat and reflow the solder on this pin and your problem will be solved.