johnson outboard tachometer not working

• 2023-03-01

Johnson outboatd tachometer not working, first check whether the flexible shaft connection is disconnected, and then check whether the mileage number still increases when starting, if the tachometer is not working. There is no need to repair it again. Replace it with a new one. As long as the car starts, the gear in the tachometer is rotating. It has worn out over time. The gear in the tachometer is plastic, and the new one doesn't cost much. The faster the engine speed is, the more pulses the ignition coil generates, and the greater the speed value displayed on the table. Generally, cars are electronic tachometers, including pointer type and LCD digital display type. There is digital integrated circuit in the meter. It drives the pointer to move or digital display after calculating the voltage pulse transmitted from the ignition coil. In addition, there is a tachometer that takes pulse signals from the generator and sends them to the tachometer circuit for explanation, and then displays the speed value. However, due to factors such as the slipping of the generator belt, the value is not accurate.

It is also possible that the speed sensor of johnson outboard is broken. When the speed sensor is broken, some symptoms such as johnson outboard can't start will appear: 1. Because the powertrain control module does not accept the engine speed signal, fuel injection and high-pressure ignition are not provided when the engine is started, the control unit sends a signal to the engine speed sensor and installs it on the camshaft hall sensor for comparison; 2. If the engine control unit does not receive the speed signal, it will stop normal operation; 4. The speed sensor is a sensor that converts the speed of a rotating object into a success rate output. The speed sensor is critical to the tachometer. Once the sensor is slightly damaged, it will cause the engine to fail to start or the performance will decline, and if it is serious, it will lead to serious failure of johnson outboard, even endanger personal safety. Remove the tachometer sensor, clean the surface of the speed sensor and the surface of the signal panel with detergent, then use a pressurized air gun to dry the water stains on the surface, and finally use the diagnostic instrument to clear the fault code and eliminate the ABS fault light. It should be noted that cleaning agent is not allowed to penetrate into the pin position of the connector during cleaning to avoid corrosion of the electronic components inside the sensor.