Oil Pressure Switches and Transmitters

Its function is to indicate the existence of oil pressure in the engine.

If there is no oil or it runs out, the pressure switch opens or closes an electrical circuit, warning us with a dashboard light.

Each part number is calibrated to a specific actuating pressure.

The good condition of the metal body, the connector and wires must be checked and ensured.
Also verify if the sensor shows any cracks, dents or impacts that might have damaged it.
Keep in mind that, as a general rule, visual inspection is not sufficient to ensure the good or bad performance of the part, but it helps to make an initial diagnosis.

1. Cracks or breaks. Tensions provoked by mechanical stress
2. Deformation and denting. Overheating of the sensor
3. Leaks. Bad anchored sensor to the engine block or a worn out seal
4. No signal. Failure of the wire due to friction or excessive vibration, short circuit, internal failure of the sensor due to mechanical or thermal stress

SIGNS OF FAILURE OF THE OIL PRESSURE SWITCH

• High fuel consumption
• Power loss
• Overheating
• Warning light Engine Check.
• Difficulties starting the engine
• Increased emissions

OIL PRESSURE SWITCHES AND TRANSMITTERS MAINTINANCE

The specific values of the sensors must be checked each maintenance or every 25.000km. Remember that refrigerant can cause corrosion and disable the res- ponse of the sensors. In case of air sensors the possibility exists that impurities obstruct the pipes which results in the impossibility of performing readings by the sensor. Replace the sensor whenever results are diagnosed which are not within the specified operating limits.