Low Oil Pressure

Ian H

Junior Member
On last cambelt change I swapped the oil pressure sender with an after market unit. It shows ~2.5 bar at idle and off the scale under normal cruise/acceleration
Since then I have been plagued with the warning light coming on at idle on the oil pressure gauge and occassionally an oil warning message on the dash.
I even now have an oil warning light coming on unde heavy acceleration.
The engine oil I use is Selenia racing 10w-60
Couple of questions:

Does the oil gauge warning light and Oil Warning dash message feed off the same sensor?
What determines which comes on since they seem to appear indepedently?
Is there a source for a repalcement unit - when I last looked they were no longer available - I suspect/hope this aftermarket one is not fit for purpose.
Is there a way to tell if there is a real oil pressure problem - I have checked the pressure reading with and without the clutch depressed and it does not change so I hope it is not the clutch / crank end float issue.

Many thanks



Junior Member
Hi Sorry to hear you are having issues Call Mike at MaseratiShed. He will no doubt give you not only advice but very likely a solution too.
If you google maseratished mikes numbers will come up he is just outside Portsmouth south coast
I hope its something simple!


I expect that the warning will be based on the same sender, but don’t know for sure.

The normal way of seeing if there is an issue would be to fit a proper gauge, but that doesn’t seem practical as it happens under hard acceleration! Could it be a wiring issue, causing a momentary dip in the reading triggering the warning?

Rex B

It seems like your problem is the sensor so If you go on eBay Modena in Germany have a new Maserati sensor for £212.
If you are concerned about end float it only takes a few minutes to check with a dial
I also know of some cases where one of the crankshaft oil gallery blanking plugs has popped out causing low oil pressure. This happened to a mate of mine and resulted in low oil pressure at idle and around 4 bar at higher rpm.