Take this as an advanced warning that the oil pressure sensor is wearing out. Oil Pressure Warning Light. Engine oil is used to cool and lubricate bearing and machined surfaces. Replacing the oil pressure sensor is a fairly simple and inexpensive procedure that your mechanic is undoubtedly capable of quickly completing. The MAF can become clogged with excessive carbon build-up from the combustion cycle, or sometimes by road grime. 3. Notify me of follow-up comments by email. The way to checking oil pressure can be done by attaching the pressure gauge into the engine where unit of the oil pressure sending is attached. Mine is a 1997. Some batteries have 2.1-volt cells, for a total of 12.6 volts. On and Off Oil … Based on the calculation, the unit will know how to properly regulate the oil flow in the engine. When I turned on the car the gauge was reading low and the light turned on. In addition, I also brought the car to a friend recommended garage to get the oil changed and the tire pressure right (I don’t have the ramps to elevate my car, or else I would have certainly done the oil change myself). Remember that the pressure indicated on the gauge is designed to show the effort required by the pump to move the oil, creating the flow required by the system to provide the correct lubrication.The pressure indicated on the pump gauge has nothing to do with the pressure between the parts of the system, such as the crankshaft bearings or cams, which is different. Running an engine with low oil pressure can cause significant damage and may total your engine and cost thousands of dollars in auto repair. Any time this light comes on, even if you know your sensor is bad already, you need to check it out. You still have time to do something about it before your engine suffers serious damage. Only if you really have no oil pressure! With the pressure sensor unplugged, the gauge overshoot the maximum, but still no warning lights were on. The gauge tells the driver what the current oil pressure is. As we said before, oil is the lifeblood of your car’s engine. Save my name, email, and website in this browser for the next time I comment. Two important components to the oil pressure sensor include the spring-loaded switch and a diaphragm. The benefit of engine oil is that it cools and lubricates these components to reduce the heat and keep them running smoothly. To recap. Without the correct ratio, the engine won’t run. One of the first signs of trouble with your oil pressure sensor is when the oil pressure warning light comes on. In the end, what will happen if you leave the bad oil pressure sensor untouched is that much greater harm will come to your car’s engine, and possibly even to yourself. With a bad fuel pressure sensor, the engine will not receive the correct amount of fuel for its internal combustion process. 2003 trailblazer low oil pressure/shut off engine I keep getting this reading my oil level is full what else can I check - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Most of the time, too much fuel will be pumped into the combustion chamber and there will be a noticeable reduction in your MPG from running too rich.. But the sensor looks the same. As you know, the engine is comprised of several moving components. If the low oil pressure warning light is on while the engine is running, stop it immediately. This is usually used on vehicles that run a higher oil pressure to operate a variable valve timing system. Problem With the Oil Sending Unit (Sensor) The high oil pressure problem can also be due to a faulty oil sending unit. 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