Why is my speedometer fluctuating?
Speedometer speed fluctuates erratically While you are driving, if you notice the needle on the speedometer jumps erratically from one number to another, the speedometer cable is most likely damaged or the sensors on the driveshaft are not accurately sending the signal through the cable.
What does it mean when your speedometer goes up and down?
You could have a problem with the speed sensor that provides information to the speedometer — either with the sensor, the driven gear, or the wiring or connector to the system. A good diagnostic tool should be able to monitor sensor output and test the system.
Can speedometer affect transmission?
Problem Description The vehicle may lose vehicle speed signal, which can affect speedometer operation and transmission shift quality. Most often the vehicle speed sensor is faulty, however, at times, the driven gear inside the transmission is at fault.
What does it mean when your speedometer is not working?
If the cruise is working and the check engine light is on, the problem is likely with the speedometer itself. Also keep in mind that anytime a warning light comes on, your ECM should be scanned right away as this might indicate a very serious problem.
Where is the Speedo cable in a Volkswagen?
Find where the cabling enters the body of your Volkswagen’s interior — you will see a thick gauge black wire going into the instrument cluster, that’s the speedo cable. To take it out, remove anything holding it in and pull it through the passageway under the dash.
How does a speedometer work on a VW?
A speedometer is a valuable instrument that shows the driver real time readings of the speeds of their Volkswagen. While most modern VW’s use speed sensors to determine speed, some older vehicles used gears and wires for the speed reading.
Why is my speedometer not working on my Chevy Trailblazer?
Your Chevrolet’s speedometer gives important readings about your current speed. If you are experiencing problems with yours, don’t fret — these issues are common and easily fixed (usually). In fact, TrailBlazer speedometer problems are one of the most common topics discussed on popular Chevy online forums.