When I start the engine the speedometer dial has a surge and goes all the way to the top and then comes back down. It will then work normally for a while then suddenly the speedometer dial will drop to zero. This can happen at anytime but wont stay on zero for very long, it will correct itself and tell me my correct speed.
Does anybody know what the problem might be? Could it be the speed signal sensor? Could it be that i need a new battery?