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Oil pressure test.
Use a pressure gauge connected into the oil system to see if there is adequate oil pressure. This will tell you if the pump is giving enough pressure. The only way to check the pump to see if the filter is clogged or if the input shaft is worn is to remove it from the engine.
Fuel pressure test is the only sure way.
You Can Have a Transmission Shop Run A Pressure Test. Good Luck
The oil pump is located on the engine in the oil pan. Once you remove the oil pan you will see the oil pump with the sump attached.
The yellow light is caused but the sensor in the oil pan. When changing the oil the next time you might need to replace the sensor. It is right next to the oil plug. The oil warning light is in place of a guage. The sensor is designed to trigger if the oil pressure falls too low. If the oil pump is not working properly, the oil light will come on. If you had a guage, you would be able to see what the actual pressure is, and whether or not it is lower than ususal. If you think that the oil pump is bad, then remove the valve cover(s) and start the engine. If oil is spurting out of the rocker arms, then the pump is working. If there is no oil flowing over the head, then the pump is not working.
Where is the fuel pump fuse and relay on 1994 BMW 525i and how can I test to see why my fuel pump won't work
oil pump is located underneath of engine n in order to see it m oil pan must be removed, removing oil pan you will oil pump ...
the oil pan has to come off the engine and then you will see the oil pump and the bolts that hold it in.
Remove the oil pan and you will see the oil pump. Simply replace it.
The oil pump is driven by the distributor shaft, with an intermediate shaft in between. There is a plastic coupler between the oil pump shaft and intermediate shaft. You could take out the distributor and put an oil pump primer shaft down in there and spin it with a drill to see if it's all connected and working properly. If no oil pressure with a drill, the problem could be that the pickup tube has broken or fallen off the oil pump or the bolt that holds the oil pump to the rear main cap is loose (not common). The solution would be to remove the oil pan and replace the oil pump and pickup. If the engine ran without oil, you may need to check the condition of the bearings.
Changing the oil pump requires putting the car up on jack stands and locating and removing the oil pan after removing the oil pan,you will see the oil pump