Fluctuating oil pressure

[Jon Weywadt]

I just came home from the Danish Matra summer meet. During the drive I noticed that the oil pressure fluctuated between 2 to 5, even with constant 2000 RPMs.
Any ideas what could cause that? I have a new oil filter and oil. The oil is still clear.

[takeadjet]

I had the same problem at the Djet.The oilpressure switch at the engine was the problem.

[takeadjet]

Check ther oil pressure switch at the engine.Never trust french car electric.

[Oetker]

Yes, oil pressure switch is  in most cases the problem.
I never saw one that displays the same pressure.
According to my information this one should fit.

http://www.ebay.co.uk/itm/Fuel-Parts-Oil-Pressure-Sender-Unit-Engine-Sensor-Genuine-OE-Quality-Replacement-/391202918516?hash=item5b1582d074

I have tested some VDO units that are cheaper but they work different.
VDO sensor  needs several  modifications to work with the original meter.

[Jon Weywadt]

Yes, oil pressure switch is  in most cases the problem.
I never saw one that displays the same pressure.
According to my information this one should fit.

http://www.ebay.co.uk/itm/Fuel-Parts-Oil-Pressure-Sender-Unit-Engine-Sensor-Genuine-OE-Quality-Replacement-/391202918516?hash=item5b1582d074

I have tested some VDO units that are cheaper but they work different.
VDO sensor  needs several  modifications to work with the original meter.

Thanks.
I looked for one like it in all the Danish parts stores. Only one showed it and they did not have it in stock, so I have ordered the one on eBay.