Engine cam, rod, or main bearings are worn out.
check for spark and fuel pressure I just had this problem with a 1989 Cherokee and had to have a Cranking Sensor installed.
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
You do NOT reset an oil pressure switch. It has to be replaced and a special socket is required. Before doing so you will need to have an external mechanical gauge installed to be sure that you do have pressure.
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
It is mechanical as pressure is very much a mechanical element.
The low oil pressure light would be on if you had low or no oil pressure. If you question the accuracy of the oil pressure light, a mechanical gauge could be installed permanently or temporarily to double check pressure readings.
i believe it should be around 6 psi that's what mine was at after i installed my new pump
Assuming the engine is not knocking, indicating a serious mechanical problem, its most likely the oil pressure sender.
no the vortec is computerize and that runs the fuel pump At a greater pressure than be atained by a mechanicle fuel pump.
Metamorphic rock can be formed a a combination of heat, pressure, and mechanical activity, or by heat, or by pressure from a mechanical activity such as plate motions.
EQUIPMENT OUTPUT DERATION: Particular example is the Generator Set installed at 1000 meters above sea level the power output is derated due to pressure.
mechanical