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2012 ford f150 speedometer needle fell off
2012 ford f150 speedometer needle fell off may be:
1.The main reason is that the speed sensor is damaged.
2.The transmission connector wire may be broken.
3. The possibility is that there is a problem with the grounding.The clip at the connection between the 4-way code meter and the transmission is loose.
Troubleshooting method:
There are two situations when the speedometer does not move. One is when it does not move at 0, which generally means it is broken or short-circuited; The other is to stay still at the highest point. That is what we often say when the meter runs out, it can be adjusted back. If it doesn't move at 0, and the mileage number doesn't move, it's likely that there is a problem with the speed sensor, or there is a problem with the wiring between the instrument and the sensor. Go to the factory for maintenance. It's a small problem.
Extended data:
The speedometer actually consists of two meters. One is the speedometer and the other is the odometer. The traditional speedometer is mechanical. A typical mechanical odometer is connected to a flexible shaft. There is a wire cable inside the flexible shaft. The other end of the flexible shaft is connected to a gear of the transmission. The gear rotation drives the wire rope to rotate. The wire rope drives a magnet in the cover ring of the odometer to rotate. The cover ring is connected with the pointer and the pointer is placed at the zero position through the hairspring. The speed of the rotation of the magnet causes the change of the magnetic line of force. The balance is broken and the pointer is driven. This speedometer is simple and practical, and is widely used in large and small cars. However, with the development of electronic technology. Now many car instruments have used electronic speedometers. One common way is to obtain signals from the speed sensor on the transmission and deflect the pointer or display numbers through the change of pulse frequency.
The odometer its feature is that the upper drum rotates one full circle. The next drum rotates 1/10 turn. Like the speedometer, the odometer also has an electronic odometer, which obtains the mileage signal from the speed sensor. The mileage accumulated by the electronic odometer is stored in the nonvolatile memory, and the data can also be saved without electricity.
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