Oil sensor pressure 2.7 crd

[JoeTe]

Hi guys!
I have a problem with oil pressure. My pressure sensor show good value all time but if coolant temperature is higher than 90 then in idle oil pressure drop to 0 and show check gauges. I changed the sensor and same happen. Somebody had same or similar problem? Maybe a wires problem? Really have a low pressure and need new oil pump? Engine sound fine even when show 0 in the cluster

[JeanLuke]

The aftermarket oil pressure sensors can be a bit of a problem. The general rule is Mopar only for these.

I use this one: https://www.rockauto.com/en/moreinfo...&pt=8660&jsn=1

[5oclock]

I have had this from time to time too JoeTe and its always been in hot weather after climbingsteep tracks. My theory is the oil pressure sender is maybe not as good as it was when new. The Benz diesel has a good oil pump(much better then some "wonderfull" toyotas I have owned), so I just ignore it when it gets over heated. The sender is behind the viscous heater unit, if you pour a bit of water on it when it plays up it wil probably come good,,,where abouts do you live JoeTe,,are you in a warm climate?

[JoeTe]

Hi guys!
I know that general rule is only mopar sensor but I already bought another one new (and not mopar) and was doing the same maybe if new sensor although check gauges show but in other way I would go directly to new sensor mopar but is pretty strange that only show "incorrect" value when engine is a little bit hotter (when coolant is higher than 90 degrees) and both sensor fault in the same way.
I was thinking about oil level, mine is at medium level and I didnt refill because Im going to replace it but I didnt yet because if my oil pump is a little bit damage I have to drain the new oil. I guess oil sensor pressure is very sensitive in low range so if the pump is not working very very good or wires need more ground or oil level is a little bit lower can show the fault( Although cluster show "0" really I check with Wjdiag and is not 0 es about 0.5 bar)

[JoeTe]

Ok I refill the oil and same happen. I ordered a brand new mopar sensor although I dont think is the problem because I already swap with Standar Motor Products sensor and was doing the same

[Adrian D]

My replacement Standard Motor Products sensor puked oil within 100km and then started to read 0 oil pressure over 2000 rpm.
I installed a Blueprint brand sensor and it worked well.

[Deezelweazel]

Blueprint is Febi BIlstein, Adrian...