Shorting Oil Pressure switch

[JAMZ]

This came up in the forced induction section too but i know some of you tech heads dont always visit there..

The switch itself is no more and has been replaced with a guage inside the car..in its place is the feed for the turbo

How do i stop the oil check light from illuminating now...How do/can i short the switch so it thinks its still connected and everything is ticky-ta-boo?

thks

[Turbo-Brown]

Yep, that's all the switch does.

Or you could just take the bulb out

[JAMZ]

Sup bud,

So there's no way of tricking the connector that plugs into the switch?...theres gota be a way of keeping that light off while keeping everything intact?

[smithy318i]

just earth it to the bodywork.

[JAMZ]

Cheers..as easy as that then?

I just Earth the connector to an Earth point and bobs yer uncle...light stays out?

[smithy318i]

Cheers..as easy as that then?

I just Earth the connector to an Earth point and bobs yer uncle...light stays out?

yes. simple as that.

[Brianmoooore]

Oil pressure switch is nothing to do with the oil check light for a start.
Earthing the pressure switch wire will make the oil pressure light come on. Leave it disconnected and the light will stay off.

[Jon_Bmw]

Oil pressure switch is nothing to do with the oil check light for a start.
Earthing the pressure switch wire will make the oil pressure light come on. Leave it disconnected and the light will stay off.

This is what I thought on the day. The check light is just for oil level I thought. And the oil pressure switch is on the main instrument panel.

Carl perhaps you knocked the sensor when we moved it out of the sump or an earth isn't strapped down properly as there is enough oil in there.

We'll have a butchers friday.

[Brianmoooore]

So which light is it that's the problem?

[Jon_Bmw]

The check light has come on, which i think indicates low oil level and thats it iirc. Is that right brian?

[smithy318i]

The check light has come on, which i think indicates low oil level and thats it iirc. Is that right brian?

Yes. Oil LEVEL is on the check control. This is the one you need to switch off by earthing the wire.

or you could unsolder the LED from the panel.

[Jon_Bmw]

The check light has come on, which i think indicates low oil level and thats it iirc. Is that right brian?

Yes. Oil LEVEL is on the check control. This is the one you need to switch off by earthing the wire.

or you could unsolder the LED from the panel.

Taa, probably just a loose earth

[Brianmoooore]

[

or you could unsolder the LED from the panel.

Or you could repair it properly!
There is a potential problem with the earth wire from the oil level sensor.
If your main earth strap from the engine to the car body becomes defective, the next time you try to start the car all the starter motor current will flow through the level sensor earth wire (other end is one of the smaller wires that bolts to the main earth terminal on the turret), and the wire will promptly vapourise, damaging the rest of the engine loom in the process.
I have an E30 here that did just this, and it was a Cat. C write off as a result!

[JAMZ]

Lights off now...

Jon,must of been where we were on the stands and were filling it up...not sure but the check light is off now so problem sorted...

thks everyone

[Brianmoooore]

Lights off now...

Jon,must of been where we were on the stands and were filling it up...not sure but the check light is off now so problem sorted...

thks everyone

Oil level sensor is enclosed in a metal can with a very small hole at the top and an equally small one at the bottom. It gets full of sludge and the net result is it responds very slowly to changes in oil level.

[smithy318i]

[

or you could unsolder the LED from the panel.

Or you could repair it properly!
There is a potential problem with the earth wire from the oil level sensor.
If your main earth strap from the engine to the car body becomes defective, the next time you try to start the car all the starter motor current will flow through the level sensor earth wire (other end is one of the smaller wires that bolts to the main earth terminal on the turret), and the wire will promptly vapourise, damaging the rest of the engine loom in the process.
I have an E30 here that did just this, and it was a Cat. C write off as a result!

wouldnt an in-line fuse fix this problem!

[Brianmoooore]

wouldnt an in-line fuse fix this problem!

It would, but so would proper maintenance.