Why did my speedometer just stop working?
Why did my speedometer just stop working? If your speedometer stopped working and stays at 0 MPH, you should have your car checked ASAP. The most common causes of a speedometer that stopped working include are a faulty speed sensor, a broken gear on the speedometer, damaged wiring, or a faulty engine control unit. Is it bad to drive with a bad speed sensor? When a speed sensor is faulty or completely bad, it would send wrong or no signal to the connected system, which could be the ECM, ESP, or ABS system. That said, driving a car with a...