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What is the reason for the idle oil pressure light coming on but going off when revving the engine?

1 Answers

SanAmir

07/23/25 11:09pm

The idle oil pressure light coming on but going off when revving the engine is mostly caused by a faulty oil pump. The oil light, also known as the oil pressure light, illuminates when the oil pressure is insufficient. If the oil light comes on during idle, the engine should be shut down immediately, and the vehicle should not be driven. More information about the oil pump is as follows: 1. The function of the oil pump: The oil pump is driven by the crankshaft via a belt or gear. When the engine starts, the oil pump begins working. The oil pump is responsible for delivering oil from the oil pan through the oil passages to the upper parts such as the camshaft, ensuring sufficient lubrication for high-speed moving parts. 2. Classification: Oil pumps come in two types: rotor pumps and gear pumps, providing about 300kPa of pressure at idle. When the oil pressure is too low, some parts may not receive enough lubrication, leading to increased wear.

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