Question about 2001 Oldsmobile Silhouette
My van keeps popping on and off the Low oil pressure light. I've changed the oil and filter as well as the oil pressure switch. Trying to find what my oil pressure should be when checked manually and for suggestions on what to do next.
Anything less than 15 psi is low... and this is for all automotive engines
Posted on Dec 28, 2013
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Posted on Jan 02, 2017
Low pressure when at idle, after the engine has warmed up and the oil has thinned, indicates that the oil pump is worn and needs to be replaced.
Posted on Jul 07, 2008
Have the oil pressure tested with an accurate mechanical gauge. often the sending unit goes bad, but without testing it could cost you an engine before you find the problem.
If the mechanical gauge shows same low readings, you have internal engine wear (likely worn crank/rod bearings) Then, it's your decision on whether to drive it till it expires, repair it or buy a new vehicle.
Posted on Apr 02, 2009
The oil pressure sending unit has gone bad. I sending unit is just above the oil filter and you can get to it from the top. When you face the Engine look down towards the oil filter, the oil pressure sending unit is just above that and it looks like a cylinder with two wires coming from it. If you don't see it, it's right between the exhaust manifold and oil filter.
If you go to Auto Zone or Parts Source, they'll have the oil pressure sending unit and the step by step instructions, When installing the new sensor. Do not use teflon tape or any sealant, the sensor is tapered and need's the good ground from the engine to give you right readings.
Good luck and hope this helps.
Posted on May 11, 2009
SOURCE: Oil Pressure Low Warning
Look low oil pressure is nothing to ignore, serious engine damage will result, have the dealer test the oil press with a special oil press tester, if that checks ok then you most likely have a defective oil pressure sensor.
Posted on Jul 06, 2009
The Aurora is a low pressure oil system. The only solution available at this time is to increase the oil weight. I went o straight 30W to solve the idle alarm issue. Some use 20W oil and that works too.
With 20W you will be at 80 to 90psi cold then drop to 20-30psi hot.
I first replaced the oil pressure gauge and it was worse. I put the original back in and it was better. Then went to 30W and all is fine.
Running it that way for a few years now.
Posted on Apr 03, 2010
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