What are the reasons for abnormal display of the engine oil pressure gauge?
1 Answers
There are several possible reasons for abnormal display of the engine oil pressure gauge: 1. If the gauge needle indicates low pressure, it may be due to excessive wear of the oil pump, clogged filter, or low oil level. 2. The pressure gauge itself may be faulty. 3. The lubricating oil may be too thin. 4. Poor sealing of the oil passages. When the gauge needle shows abnormal oil pressure, it indicates a fault in the engine components. If the oil gauge needle indicates low pressure or the needle fluctuates significantly, it may be caused by excessive wear of the oil pump, clogged filter, oil suction screen exposed above the oil level, low oil level, air mixed in the oil passages, or a faulty pressure gauge. Additionally, low viscosity of the lubricating oil, poor sealing and lubrication of the oil passages, excessive viscosity of the lubricating oil when too cold, or excessive sludge deposits in the lubricating oil can also cause abnormal display of the oil pressure gauge. The working principle of the oil pressure sensor (engine oil pressure sensor) is that it contains a sliding resistor. The oil pressure pushes the potentiometer of the sliding resistor to move, changing the current of the oil pressure gauge and altering the position of the needle.
