Northstar Engines and System Technical Discussion Discussion, Northstar low oil pressure alarm in Cadillac Engine Technical Discussion; I Replaced The Northstar In My Wife's Eldorado, (headgasket Problems And Overheating With Cooland Loss), With A Used Low Mile ...
I Replaced The Northstar In My Wife's Eldorado, (headgasket Problems And Overheating With Cooland Loss), With A Used Low Mile Seemingly Good One. When The Engine Gets To Tempurature Especially On Hot Days I Get The Oil Pressure Alarm At Idle. If I Crank The Idle Just A Little It Goes Away Although It Sometimes Happens When Decelerating. Could It Be A To Low Idle Problem Or A Sensor? More And Neverending Northstar Problems For Me. I Shoulda Got Rid Of It.
thanks, it is the factory sensor that is in the engine.
Totally normal here. Especially when the motor gets hot. The cure would be going to a thicker oil, best oil for the North* is Rotella T which is a heavyduty truck oil, try it and I guarantee it will go away.
The 4.6L Northstar takes 7.5 quarts with filter change. Overfilling is very bad. WHen I change, I usually fill the new filter, then take the rest of the quart can and 6 more, and use exactly that. Then I check it once a week, and add about 3/4s of a quart every 1000 +/- miles to the Deville, and about 1/2 qt every 2500 to the Eldo. I just try to keep the level just below the top of the hash marks on the dipstick, checked when warm, about 5-10 minutes after shutdown.