Where is the speed sensor of Volkswagen Polo located?
2 Answers
The speed sensor of Volkswagen Polo is located on the shaft, near the wheel side. Working principle of the speed sensor: The speed sensor is a device that converts the rotational speed of an object into an electrical output. It belongs to an indirect measurement device and can be manufactured using mechanical, electrical, magnetic, optical, or hybrid methods. Based on the signal form, speed sensors can be divided into analog and digital types. Classification of speed sensors: According to the physical quantity measured, sensors can include displacement, force, velocity, temperature, flow, gas composition, etc. Based on the working principle, sensors can include resistive, capacitive, inductive, voltage, Hall effect, photoelectric, grating, thermocouple, etc.
I just repaired the RPM sensor on my Volkswagen Polo, which is usually hidden in the engine bay near the chassis. You have to crawl under the car to see it, located near the crankshaft pulley, close to the transmission joint. Last time, I found it only after my car started shaking and threw a trouble code. When I removed it, I discovered it was completely covered in mud. I recommend using your phone to take a few photos inside the engine bay for positioning first, otherwise, it's easy to confuse it with the nearby camshaft sensor. Remember, it always has two wires connected to a plug—disconnect the negative battery terminal before unplugging it. If you're replacing it yourself, an 8mm socket is all you need, but the position is so awkward that you'll spend half an hour covered in grease. After the repair, remember to clear the trouble codes with a diagnostic tool, or the engine light might stay on.
