Removal tool for oil pressure switch

[S2_avant 19930325]

Hi tried to find the OEM number for theremoval tool/socket for oil pressure switch ,, the big one. ABY engine.

Part number. 035 919 561

Best Regards

[Tractor Dave]

Crows foot spanner or bend an old spanner. I think it's 17mm from memory.

[Tractor Dave]

Yes. 17mm. This is what I made. You will see I trimmed the internal part of the spanner so it fits the nut snug. I use a long bar to give it a whack when undoing. Works really well.




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[S2_avant 19930325]

I have a great tool for it.. when i have the room for it .. i can borrow the original VAG toool and its some kind of socket ... so thats what i nedd , but thanks for the advices ..

[K Simmonds]

I think the VAG tool is effectively a crows foot socket, I could actually do with getting a set of them as it's one thing I don't have in my tool kit, we do have them at work. It's so rare that I have to use one at home though, normally I do something like Dave's solution and modify a spanner, I've got quite a few 'special' spanners I've made for job's on S2's over the years.

The sender can also be undo with a stubby 17mm spanner but it's a fiddle.

[S2_avant 19930325]

When you turn the key as far you can without starting the car ,,, are the warning light for oil flashing ? It should be flashing since there is no oilpressure .. .correct ?

[Tractor Dave]

No. Only the battery light on with key in that position.

[S2_avant 19930325]

Ok , so my scenario is.
So i connected the sensor , the small one outside the car and able with air pressure to active it ,, i have clock to see the pressure.
I turn the key on , no flashing light.
I turn the air pressure to 5 bar , the light activates.
I try with 1bar.
The light activates. I have a new sensor.
So it does not matter what i do , it activates. Since it activates ,it means the wire is good. Correct ?
If i start the car with sensor connected as it should be it activates.

[S2_avant 19930325]

Is there something on the electronic board on the dash panel it could be ?

[Tractor Dave]

Everything you need to know is in this thread.

https://www.s2forum.com/forum/technical/electrical/83352-oil-pressure-warning-light

[Tractor Dave]

And excellent write up by Dave here.

https://forums.quattroworld.com/s4s6/msgs/96161.phtml

[S2_avant 19930325]

i found this .....

The last sentence ....
"The F1 has nothing to do with an signalling an "at idle" low OP situation"

To paraphrase "AudiEd" who (mostly) said: "The way I think the system works is the G10 not only sends a variable signal to the gauge via the black/white wire but the blue/black wire from the F22 trips the Auto Check low oil pressure warning light if OP drops below 0.3 Bar. The F1 switch trips the Auto Check "IF" oil pressure is below 1.8 Bar @ 2000 to 2200 rpms. The F1 has nothing to do with an signalling an "at idle" low OP situation."

So when i get a signal of low oil pressure at idle and that has nothing to do with F1 , the single connector for the oil sensor, why do i get low oil pressure signal then ?? Where does it come from ??

[sjw185]

So when i get a signal of low oil pressure at idle and that has nothing to do with F1 , the single connector for the oil sensor, why do i get low oil pressure signal then ?? Where does it come from ??

I had a faulty signal on the oil pressure switch at idle when hot.
Pressure gauge working ok but would get autocheck alarm after car was warmed up then sat at idle
Disconnected Blue/black F22 wire until I fitted new OEM switch

F22 removed.jpg

[S2_avant 19930325]

hmm ... i have new oil sensor switch and sensor .. the big one and the small ,, both are new. Mine starts directly to flash when i start the car.