The crankshaft position sensor signal is the basic signal for calculating the time and fuel injection amount of the engine electronic control unit. It is one of the important sensors in the electronically controlled fuel injection system. The damage or poor signal of the sensor will cause the engine to fail to start. The old type of EFI car generally adopts the magnetic induction type crank position sensor , and the failure rate of the magnetic induction type crank position sensor of the domestic car is high. The weakening of the magnetic field is demagnetization, and there are three conditions for demagnetization: 1. The
magnet is subjected to strong vibration; 2
, gradually decaying alternating magnetic field; 3. The
magnet is heated to a high temperature (above 300
degrees). The crankshaft position sensor works for a long time under the condition that the engine speed is constantly changing. When the engine speed changes from high to low, the induced current magnetic field generated by the magnetic induction crank position sensor is just a gradually attenuating alternating magnetic field. Therefore, this may be the main cause of magnet demagnetization inside the magnetic induction crankshaft position sensor. You can find a strong white magnet with a strong magnetic force. It will be placed behind the original car magnetic induction crank position sensor. The epoxy resin can be used to reliably hold the magnet. The problem can be solved.Onlyrelx LUX3000
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