Oil Pressure-Stop Switch

Oil Pressure-Stop Switch

An oil pressure-stop switch is a safety device that prevents the engine from running if the oil pressure drops below a certain level. This is important because if the oil pressure drops too low, the engine will not be able to lubricate properly and will eventually seize up.

Oil pressure-stop switches are typically located in the engine block near the oil pump. They are usually made of metal and have two terminals. When the oil pressure drops below a certain level, the switch closes the circuit between the two terminals, which sends a signal to the ignition system to stop the engine.

Oil pressure-stop switches are an important part of any engine. They help to protect the engine from damage and ensure that it runs smoothly.

Types of Oil Pressure-Stop Switches

There are two main types of oil pressure-stop switches: mechanical and electrical.

• Mechanical oil pressure-stop switches use a spring-loaded plunger to close the circuit between the two terminals. The plunger is held open by the oil pressure. When the oil pressure drops below a certain level, the plunger moves down and closes the circuit.
• Electrical oil pressure-stop switches use a magnetic coil to close the circuit between the two terminals. The coil is energized by the battery. When the oil pressure drops below a certain level, the magnetic field around the coil weakens and the switch opens the circuit.

How to Test an Oil Pressure-Stop Switch

To test an oil pressure-stop switch, you will need a voltmeter.

1. Turn off the engine and disconnect the battery.
2. Locate the oil pressure-stop switch. It is usually located in the engine block near the oil pump.
3. Connect the voltmeter leads to the two terminals of the oil pressure-stop switch.
4. Start the engine and let it run for a few minutes.
5. The voltmeter should read 12 volts. If the voltmeter reads 0 volts, the oil pressure-stop switch is bad and needs to be replaced.

Conclusion

Oil pressure-stop switches are an important safety device. They help to protect the engine from damage and ensure that it runs smoothly. If you suspect that your oil pressure-stop switch is bad, have it tested by a qualified mechanic.

List of Oil Pressure-Stop Switch Types

• Mechanical oil pressure-stop switch
• Electrical oil pressure-stop switch