42rle, 3.73 gears, 33x12.5x15 tires. Cruising at 60-65 mph (about 2500 rpm’s) overdrive on oil pressure “normal”. Switch off overdrive( now running at 2800-2900 rpm’s. I can see the gauge slightly move up(1/4”). Switch on OD and oil pressure goes back to normal. Is this OK or should I be checking something?
Oil pressure rising
- Thread starter KcTj
- Start date
KennethS
TJ Enthusiast
Oil pressure will increase with increasing engine RPM, and decrease with decreasing engine RPM. So what you are seeing is 100% normal.
X2. The oil pump is driven by the engine so oil pressure varies up & down in direct step with engine rpms. Newer TJs like yours reduce the range of the gauge pointer so the pressure ups and downs are not as readily apparent as is actually happening in the engine.