I let the car sit for 2 weeks then since I started using it again the tachometer has been erratic, zero then on target then sometimes pegging. It sometimes moves when the engine isn't running.
Searching the web it sounds like I need a new instrument cluster. Anyone ever see this condition with anything less than a bad tach? I've taken the instrument cluster out and gone over the plug connections with a lead/graphite pencil improving the contact but no improvement in tach behavior.
Bill