What happens when a speed sensor goes bad?
A faulty speed sensor won’t be able to provide accurate speed signals. When this happens, the car’s computer won’t be able to control the gear shifting within the transmission. This can result in the transmission to shift faster and roughly than usual.
Where is the speed sensor located?
The Speedometer Vehicle Speed Sensor (VSS) is located in the transmission housing on the passenger side output flange. Automatic Transmission The Vehicle Speed Sensor (VSS) is located on the right side of the transmission near the output shaft.
Can a bad speed sensor cause slipping?
A malfunctioning transmission or speed sensor may tell the vehicle to shift at the wrong time, or too late. This can cause hard shifting, or even the sensation that the transmission is slipping. Sensors should always be checked when a vehicle is shifting poorly.
How do you know if your transmission speed sensor is bad?
The following signs will show you if your transmission speed sensor has failed.
- Cruise Control Fails. The main function of the speed sensors is to monitor the output and input shaft speed.
- Improper Or Harsh Shifting.
- The Check Engine Light Indicates.
What causes speed sensor failure?
Over time, the transmission speed sensor can go bad due to wiring issues or just outright failing due to it constantly being used every time you are driving your vehicle. If the sensor is magnetic, it can go bad from iron sticking to the tip of the sensor, which will cause an inaccurate reading.
What is the difference between vehicle speed sensor and transmission speed sensor?
If you noticed, I’ve used the words, transmission speed sensor and vehicle speed sensor so far. The only difference between the two is what the manufacturer decides to call it. In either case, the faster the transmission output shaft moves, the more voltage the sensor produces.
Is it hard to replace a speed sensor?
The vehicle speed sensor is one of the easiest parts on your car to change yourself. If you notice that the speedometer does not work any longer, replace the vehicle speed sensor as it is the most likely cause.
How do you diagnose a bad speed sensor?
Here are the symptoms of a bad or failing transmission speed…
- Harsh or improper shifting. Without a valid speed signal from these sensors, the PCM will not be able to correctly control the shifting of gears within the transmission.
- Cruise control does not work.
- Check Engine Light comes on.
How do you troubleshoot a speed sensor?
How to Troubleshoot Speed Sensors
- 1.) Check Sensor Connection.
- 2.) Check Gap.
- 3.) Resistance Measurement (two wire plug only)
- 4.) Check Power (three wire plug only)
- 5.) Check Wiring (three wire plug only)