The oil pressure sensor switch is primarily responsible for monitoring and reporting the oil pressure within your engine. If it fails, it typically provides false readings or fails to trigger the low oil pressure warning light. However, a faulty sensor switch itself would not cause the engine to be chattery or noisy. The noise and low oil pressure you are experiencing are more likely due to actual low oil pressure, which can be caused by worn bearings, a failing oil pump (even though you've replaced it), clogged oil passages, or other internal engine issues. Given that you've already replaced the oil pump and still experience pressure loss when the engine reaches operating temperature, it’s prudent to proceed with checking the bearings as you planned. Worn bearings can lead to low oil pressure and increased engine noise. Inspecting the oil pan for metal shavings or debris can also provide clues about the internal condition of the engine. While replacing the oil pressure sensor switch could ensure accurate pressure readings, it won't resolve the underlying mechanical issue causing the noise and pressure loss. Therefore, focus on the internal components, and if they appear to be in good condition, then consider replacing the sensor to ensure accurate monitoring going forward. Let me know if it does help you or not. I will visit here again for now I will visit https://academized.com/term-paper-writing-service here because my brother is looking for a term paper writing service and with the help of a Google search I found that website where I found the service. And when I am done helping my brother after that I will come back here.