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oil pressure sensor leaking
The oil pressure sensor is leaking oil. What should I do? More than 90% of the oil leakage problems are caused by the long-term alternating change of the temperature of the rubber sealing ring inside the gearbox, which leads to the loss of a large amount of plasticizer and softener of the sealing ring, resulting in corrosion, aging and hardening.
Cause analysis and Solutions
1. The oil storage capacity of the engine is too small, resulting in no or little oil in the lubrication system, resulting in low oil pressure. Solution: refuel.
2. Dirty or viscous oil makes the oil pump unable to effectively absorb and pump oil, resulting in low or no oil pressure. Solution: change the oil.
3. If the engine oil becomes thin or becomes thin due to high engine temperature, the engine oil will leak from the clearance of the engine friction pair, resulting in low oil pressure. Solution: change the oil or overhaul the cooling system.
4. oil leakage of oil pipe, damage of oil pump or excessive wear of its parts will reduce the oil absorption and pump output, or there is no oil pressure at all, resulting in low or no oil pressure. Solution: overhaul.
5. excessive clearance between crankshaft and large and small bearings leads to oil leakage and low oil pressure. Solution: overhaul.
6. the spring of the pressure limiting valve or reducing valve is too soft, or the card is stuck or the steel ball is damaged, resulting in the disappearance or weakening of the valve function and the decrease of oil pressure. Solution: replace and overhaul.
7. low oil pressure caused by oil sensor plug, pressure gauge or circuit fault. Solution: replace and check.
operating principle of oil sensing plug
The oil plug is positively controlled, just like a switch. When we start the vehicle, the oil pump generates pressure, and the oil pushes the internal diaphragm to disconnect the circuit. At this time, the oil indicator on the instrument panel goes out, indicating that the oil pressure is normal. On the contrary, if the oil pressure is insufficient, the line will be connected, and the oil indicator light on the instrument panel will light up to remind the owner of the need for inspection and maintenance.
Misunderstanding of oil indicator
Many drivers think that the oil indicator light is on, which means the engine is short of oil. In fact, this understanding is not completely accurate. The light of oil means that the oil pressure is insufficient. When the oil pressure is insufficient, we cannot accurately judge. We should follow the repair standard of "easy before difficult" and "small money before big money". Some circuit problems, such as occasional sensor failures, are difficult to repair. You said it wasn't completely bad. You said it was not broken, but it could work normally, and the fatigue accuracy of the sensor was not enough.
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