[Vwdiesel] Oil Pressure idiot light & buzzer

[Pam & Doug Boes]

My daughter's Golf diesel started showing the oil pressure idiot light and
warning buzzer yesterday. When the engine is cold, the light doesn't come
on. After driving for awhile the light starts flickering and the buzzer goes
off. I had her top off the oil and drive it home. It doesn't smell hot like
there is no oil circulation and the water temp gage shows normal.

 

Do the sender units on the N/A engines degrade before failing completely?
I've asked a couple of gearheads and they all say to get a gage and connect
it to the sender ports to see what the pressure actually is. How likely are
worn bearings, etc that would be too sloppy to maintain oil pressure after
the engine is warmed up? There doesn't seem to be any corresponding drop-off
in performance when the light comes on. I'm planning to get a gage & check
the actual pressures at each port and change both sender units to see if
that cures the problem.

 

Any other suggestions?