there's two oil senders. one on top of the oil filter, one on the head.
If your problem is intermittent 2000~ rpm going off -> vw oil filter,20w50 oil will cure that.
If not you need to check the sensor or the wire going to it.
see my sig
and see http://sam.bytebandits.com/radotutorial
the big blue one on the head is the 2000rpm one iirc, and the one on top of the oil filter is the constant one.
Now the trick is, one sensor will buzz when disconnected (open circuit) and the other is when its grounded! I forget which is which.
But if you ground one, and buzzing stops, or if you unplug one and the buzzing stops you've found the culprit. First thing to do is check that both wires are connected, then imo put a real pressure gauge on it or replace the sender. I got a used one for cheap here cause the dealer wants so much for em. Oddly my sensor on top of the oil filter the connector sheared off leaving a wire dangling.
And if you do like I did:
-Replaced both sensors
-Pressure test came out good
-checked bay wiring
and you still get beeps your SOL, but you can take out your cluster and search for the buzzer that annoys you so much. I couldn't find mine because I wasn't looking in the right place
20w-50 did it for me. I live in HOT Florida therefore the beeping becomes an issue in the summer. I noticed I need tochange the oil more frequently in the summer to keep the beeping from appearing under 2000rpm.
I agree with mkrad, a real gauge is the way to go...
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