My '97 5.2L is ony showing about 20-25 pounds of oil pressure, just above the first hash mark, but not close the the 40 psi mark. I am running 5W-30 synthetic oil. Seems low and does not appear to change with rpms. Bad sending unit? Where is the sending unit on this engine.

Thanks all.

 

By the dist. on the back side of the motor.

 

I would do a manual test first before changing the sensor.

Could be bad bearings or oil pump, but anything above 10psi should be ok for the 5.2 and 5.9 motors.

 

I know mine is the sensor.. slightest rise in temps seems to make the sensor MIA. Oil Pressure is good on Mech gauge. Seems common problem i'm always reading about..

 

Thanks all.