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Mercury capri oil pressure fluctuates it the sensor going out?

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: fluctuation on the oil pressure gauge reading

The oil pressure sending unit is a sensor with an internal diaphragm, if the internal diaphragm is damaged , or the line to the diaphragm is blocked you can get this kind of fluctuation on the oil pressure gauge.

The oil pressure value must be read by installing a mechanical gauge near to the oil pressure switch and checking the pressure.

If pressure is ok, replace the sending unit. If there is a real pressure drop, check the oil pump.

If you still get fluctualtion after replacing the oil pressure sending unit, replace the oil pressure gauge.

Posted on Nov 24, 2008

  • 15 Answers

SOURCE: 1991 4 clinder mercury capri build down under,

The firing order is 1-3-4-2
All things Capri are found at:

Hope this helps

Richard R
SE XR2 turbo

Posted on Jan 07, 2009

  • 318 Answers

SOURCE: Fluctuating oil pressure on 92 Mercedes 300CE

Either the sending unit,(this unit is on the motor)is malfunctioning, or your engine oil pump may not be providing enough pressure.
This could be due to sticky oil pressure bypass valve,,worn out pump,,or worn engine main bearings.
If it is just a case of worn engine oil bearings,this is usually indicated by high oil pressure when cold,,but low oil pressure when hot,.i wouldn't worry to much, since most engines suffer from this same complaint and doesn't harm the engine any.

Posted on Jan 19, 2009

  • 46 Answers

SOURCE: loss of oil/oil pressure and fluctuating oil pressure

could be that the screen in the oil pan where the oil is taken up is clogged. not certain--maybe oil change?

Posted on Mar 02, 2009

  • 35 Answers

SOURCE: 2004 Grand Cherokee: oil pressure fluctuates

if you know for certain that the sending unit is correct and the guage is accurate, then yiu may have big problems.....while the engine is running open the oil filler hole.. is everything wet with oil? or does it look dry or just a little lubed? you can allways install an aftermarket oil pressure guage(crappy tire) if you get the same results with that then you may have a week oil pump....worst case scenerio... need an engine rebuild as the moter may have wear issues.does the pressure slowly drop as the motor warms up? at idle ? does it jump up when you step on the gas?

Posted on Mar 30, 2009

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