speedometer and tachometer not working chevy

• 2022-04-25

The diesel engine can change direction, but it can't start after changing direction. This kind of situation often occurs when driving and starting from forward to reverse. When the speedometer and tachometer not working chevy , if the fully loaded ship is sailing at full speed five ahead, it needs to start in reverse; First, reverse the shuttle. After the reversing action is completed, the next step is to reverse start. Only when the main engine cuts off the fuel, due to the inertia of the hull, it should drive the propeller to rotate in the positive direction. The torque generated by this rotation is called reverse torque ; Then the torque generated by the reverse rotation of the main engine is called positive torque ; Then , to realize the reverse starting, the main engine can realize the reverse starting only when the ship's speed is reduced to reduce the reverse torque generated by the propeller to less than the positive torque (that is, the positive torque generated by compressed air is greater than the reverse torque during starting).

It should be pointed out that the reverse torque generated by ship inertia is related to the loading of the ship. If the ship is fully loaded, the reverse torque is much greater. Therefore, if the positive torque generated by the compressed air is less than the reverse torque of the ship's inertia, the reverse start cannot be carried out. During the operation of diesel engine, false alarm occurs from time to time; In particular, the alarm of exhaust temperature and lubricating oil pressure.

Generally speaking, the causes of false alarm are as follows. First, the alarm setting value is incorrect, resulting in false alarm. The second is the false alarm caused by sensor failure, that is, there is a problem with the measured signal; For example, in the exhaust temperature high temperature alarm, the failure of its thermocouple sensor will cause the distortion of exhaust temperature display and false alarm of exhaust high temperature. Another reason may be that the alarm system line fails, resulting in false alarm. Of course, there are many other reasons for false alarm, but the common reasons are mainly the above three aspects. The alarm value can be adjusted; If the sensor fails, replace the sensor; Faults in the line shall be eliminated in time.