the reason speedometer and tachometer not working chevy

• 2022-11-04

The Chevy speedometer is faulty. First, check whether the circuit from the speedometer sensor to the speedometer is broken or short circuited, whether the plug is loose or loose, and whether the circuit plug is normal. First, check the sensor. If the sensor is normal, the speedometer itself needs to be repaired. The causes are as follows:

1.If the speed sensor is damaged, the speedometer will not move. Check whether the speed sensor has any fault. If it has any fault, replace it in time;

2.If the speedometer is damaged, the speedometer may not move, but check whether the circuit of the speedometer is falsely connected or short circuited, if it is repaired in time;

3.Check whether there is any fault in the sensor driving mechanism, and the poor contact of the connecting circuit will also cause the speedometer to stop moving;

4. Use the diagnostic apparatus to take out the fault code, which can solve the problem more quickly

The solution to the immobility of the Chevrolet Cruz tachometer is as follows:

1. Tachometer pointer does not move due to disconnection of flexible shaft in tachometer; Replace relevant accessories;

2. Tachometer pointer does not move due to falling off or stuck; Replace relevant accessories;

3. There are foreign matters in the instrument panel, which makes the pointer unable to rotate; Remove the instrument panel and clean the foreign matters;

4.The circuit in the tachometer is defective, aging or burnt out. Replace the harness.

Fault diagnosis: This phenomenon is an accidental fault. The fault did not reappear during the test run. According to experience, the possible causes are: ① The ignition system or generator interferes with the instrument; ② There is virtual connection in the vehicle speed sensor or connector and circuit. Because it is time to replace the spark plug, it was decided to replace the spark plug first. The result was no effect, and the fault occurred again. Troubleshooting: After replacing the vehicle speed sensor, the fault is eliminated.