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Recommended Posts

06 997S 104k

When I check my oil I am full bars now, when I am at idle every once in a while, when my car is hot I get a Oil Level too low.

I read that if you over fill the oil this can cause this, I did just add some oil in as I was at 2 bars 20 mins before.

Thoughts on this? My question is at idle what is the sensor suppose to read? Anyone heard of similar or my expected cost to repair an oil sensor and or pump.

Thanks in Advance!!


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could be the oil pump(s)...but a cheap and easy first step would be to swap out your pressure sending unit. at least you could rule that out if the problem persisted. i changed mine (due to leaking but it still seemed to read ok), part was <$100 and was an easy DIY.

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Strangest thing, got in the car the next morning oil level was 4 bars, no warning and idle is 2.5-3 so all is well.

I think my 997 has become self-aware.

Regardless thanks for the advice!! Now where is that dontation button ;-)


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I had an Audi do exactly the same thing! It will happen again under the right circustances. The oil level sensor works by "seeing" the air/oil interface in your crankcase. Actually I think "hearing" may be the better term as I believe the sensor is similar to the one used in medical ultrasound machines (sonar). For instance if there is condensation on the surface of the oil the sensor will not see/hear the boundry correctly and report a low level. Once you stir the oil up (off idle) everything returns to normal. Do not add oil!

Edited by Mijostyn
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