You Know That Your Car's Speed Sensor Is Malfunctioning If…
Your car's speed sensor does not just show you how fast you are going; it provides other useful functions. For example, the sensor helps in regulating the ignition timing and volume of fuel entering the carburetor. Therefore, a malfunctioning speed sensor can create a host of problems for your car. This means you should be on the lookout for signs of a faulty speed sensor, which include:
Malfunctioning Speedometer
This is one of the most common symptoms of a malfunctioning speed sensor.