В механизм автомобиля входит множество систем, each of which plays a huge role in his work. Failure of one can lead not only to failure, but also damage to another. If you do not monitor their condition, then this is fraught with negative consequences. To avoid this, constantly need to monitor their health.
In order to follow the car on itinstalled a variety of instruments and sensors that indicate the status. One of them is the oil pressure sensor. The car's lubrication system uses three types of oil supply to the parts: spraying, gravity and pressure. It is logical to assume that the first and second options simply can not fail, because the first is used to lubricate the walls of cylinders, and the second - mechanisms and gear joints.
Only one fault remainsnature: pressure drop in the lubrication system. To determine it uses a sensor that is screwed into the engine block. His readings are displayed on the dashboard. Here it may be just a control lamp, and maybe a device with a scale. Any motorist knows that a burning oil pressure warning lamp will not lead to anything good. If the oil pressure sensor is lit, it is urgent to start looking for the cause. There may be several.
The oil pressure sensor itself may be faulty.which is screwed into the unit or device. This is checked by testers, it is tested for resistance, the latter just needs to be in good condition. If the oil pressure sensor still lights up, engine disassembly is inevitable. In the engine itself, there may also be more than one malfunction. To get started is to get to the oil filter and check its tightness, and also find out if it is not clogged. If this is the case, then the oil is simply not supplied to the system, and through the pressure reducing valve of the pump is discharged into the crankcase.
If the filter is fine, it is worththink about the state of the pump itself. There are cases when some little thing gets under the pressure reducing valve and it hangs. The pump, even the most productive, in such conditions can not inject the necessary pressure, it simply bleeds. This is a rare case, but it happens. If everything is normal, then you need to disassemble the pump and make sure that it is not worn. This is done with a probe, which measures the distance at the junction of gears, as well as between the gears and the walls of the pump. For each car, these figures are different, they can be found in the instruction manual.
If after such operations the pressure sensoroil shows pressure less than normal, then there is one option - wear liners and crankshaft necks. Its repair is reduced to replacing the first or grinding the second, in which case the liners themselves will still have to be changed. This repair is not too expensive, but there may be problems with the quality of parts, so you should pay special attention to it.
As a rule, the oil pressure sensor startsburn first on a warm engine, and then only such a malfunction occurs on a cold unit. The fact is that at high temperatures, the viscosity of the oil drops significantly, and at normal temperature, it remains at the proper level. If you do not pay attention to it at the first stage, then at the second repair can cost much more, until the replacement of the crankshaft.
