If you suspect the sending unit may be faulty just replace it with a new one, they are not expensive but a little difficult to remove and replace.
You can test your 1997 Oldsmobile 2.4 liter engine oil pressure sending unit with a diagnostic tester. The diagnostic tester is the most reliable way to make sure your sending unit is working properly.
Remove oil sending unit and replace with a mechanical gauge
The oil pressure sending unit on a 302 ford is located on the block of the engine. It screws into the block and the sending unit goes on the end. The oil pressure sending unit on a 302 Ford is slightly above and to the left of the oil filter. I find it is easier to replace with the oil filter out.
"http://wiki.answers.com/Q/Location_of_oil_pressure_sending_unit_1990_bronco_351"
It is located directly above the oil filter.
Just foward and at the 10:00 position from the oil filter.
Remove the oil pressure sending unit retaining ring. Remove the wiring harness from the sending unit. Poll the sending unit out of the engine.
To get oil pressure - you have to either tap in the existing pressure sending unit's oil port or get a sandwich adapter plate - that fits between the oil filter and the block. In any case - you will need an oil pressure sending unit and appropriate gauge to go with it.
The oil pressure sending unit on a 2005 GMC Sierra
Were is the oil pressure sending unit on a 95 mitsubishi miaage
The oil sending unit only provides a reading of the oil pressure to the gauge. It has nothing to do with actually sending oil.
Which sending unit? Oil pressure sending unit? Engine temp sending unit? Fuel gauge sending unit?