Oil Temperature

[anonymous-user]

Last two start ups oil says -4 and takes a while to come positive. So it disables the other gauges and sounds a warning.
Water temp both times before start up was 3 and 5. It is not that cold.
New sensor three weeks ago worked fine from start , plenty of oil.
Any clues ?

[justyr]

It is f&&&ing cold though, right?
Sensor could either have failed/is failing (new, so @ top of the failure bathtub curve) or it could just be generally reading on the low side (tolerance issue).

[nawarne]

As above - OR,
- The oil temp sensor is at the bottom'ish of the dry sump tank, and as such, is a bit more exposed.
Whereas, the dash water temp sensor is at the top of engine/throttle bodies 1 & 2, and may have some residual heat from engine....bit of a waffle really, could be just sensor offset as suggested.

Nick

[nrick]

I have noticed this, it is just the oil is at the bottom of the sensor range (being cold). It is happiest at 80-90deg and becomes less sensitive lower down. If it gives a false reading at 80 then that is the time to worry, easy to check with Diag's or the water temp.

[Djdan]

Same, it has been cold and the sensors defenitly read on the cold side. bearing in mind the volume of oil in the engine it will take a fair old while for the warm oil to warm the rest of the chilli stuff in the tank. I find it funny that the low oil temp only fires when it hits -1, fine below that!