pending on the rpm level in which still should not 80 max at 3000rpm should be about 30-40lbs and at an idle any where between 10-30lbs
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∙ 2006-03-27 01:26:47Cold oil when you first start the engine will have lots of pressure then it will settle down as the oil warms and thins out.
THAT IS SIMMPEL IT IS THAT URE CAR DONT NEED ALL THAT OIL PRESSURE WEN ITS SLOWING DOWN
On metric gauge 2.5 to 3 bar, about 40 to 45 psi. At least 15 psi, 25 psi would be better, 40 psi on a good engine.
The plug or sensor above the oil filter on a 1996 Cherokee is the oil pressure sending unit. This sensor controls the oil pressure gauge.
I have a 1994 Mercury Cougar that runs good but burns alot of fuel and after the engine starts the and gets some heat, oil pressure gauge indicates low when there is nothing wrong. I have the same problem with a 1991 Mercury Cougar 3.8, doesn't burn fuel that much but a mechanician told me that it might be a miscontact on the gauge indicator, some dirt in oil pan blocking oil pump or the oil pump is going off. First thing to do is changing oil and filter replacing it by syntec oil in it so it will stay in engine more time when heating. If after that nothing changed check oil pressure at a local garage.
800 RPM should yield about 25-40 lbs. of oil pressure on a stock motor.
40 on idle up to 60 while on the move.
with your eyes
between 35/60 psi.
The gauge should be electrical.
You will have to remove the oil sending unit/switch and screew a oil pressure gauge into it's place and then start the engine and read the oil pressure.
Cold oil when you first start the engine will have lots of pressure then it will settle down as the oil warms and thins out.
The oil gauge shows the oil's temperature. The oil pressure gauge monitors the oil pressure for your viewing pleasure.
It is necessary to read the density and the quality of the gauge. You should see the lower side.
Connect the wiring harness to the back of your oil pressure gauge. Secure the oil pressure gauge with the retaining screws.
Take the wire loose from the oil sending unit and then turn the key on and ground the wire to the engine somewhere and the gauge in the truck should go all the way past the highest point. If it don't then the gauge in the dash is bad are the wire going to it ( The 1 you grounded ) is broken. If the gauge is reading low oil pressure, Then unscreew the oil sending unit on the engine just behind the distributor, were you took the wire loose from. Then install a OIL PRESSURE GAUGE into it's place. Then start the engine and read the pressure, Now compare the reading on the dash gauge to what you are reading on the oil gauge.
Defective gauge, defective oil pressure sending unit, low of oil, defective oil pump.