XUD question

[Philip Chidlow]

It's a ZX, but the engine's the same as a BX19D in essence, so I wondered; the oil level warning light flashes indicating low oil, but the oil level's fine. An oil change didn't make it go away either.

In true Citroen-fault-fixing-style, which wire do I have to wiggle to make it behave, lol? Where's the sensor (must be some sort of float? If so is it stuck - so where do I tap it - )

Phil

[Stinkwheel]

Back middle of the sump is a 2 pin sensor and the wiring going up from it. The sump has what looks like a cyclindrical casting in it, this is, i believe, where the sensor lives.

Its easiest to get to from beneath on a BX, but on a ZX i do not know. Hope that helps

[Tim Leech]

My Xantia's has done this since new (its one of those things Sir), fine when left overnight but if you start it up again after a run it flashes for a few seconds saying oil is low when its fine.

[mat_fenwick]

It's not a float sensor actually, at least on the BX But a circuit which passes current through a piece of wire, which will heat up very quickly if in air but not if immersed in oil. Depending on how quickly it heats up, the oil level is known.

[Oilyspanner]

On some the sensor is on the back of the block near the gearbox, it has a longish probe pointing downwards into the sump, my Xantia one used to cry wolf if I parked with the wheels on a kerb etc.