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The oil thins when hot and the oil pump is driven off the engine so, the lower the engine rpm's, the slower the pump turns.
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∙ 11y ago
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What causes oil pressure drop when engine has heated up during drive?
The oil gets thinner. It is normal for the oil pressure to drop after the engine has reached full operating temperature. If you have from 30-40 psi pressure when the engine is hot then that is normal.
Why does the engine get hot when idling?
The fan clutch is not functioning properly. Replace.
What is a metallic knocking noise on a 1996 Toyota Camry while the engine is cold?
DOES IT HOLD GOOD OIL PRESSURE WHILE HOT AND IDLING? SOUNDS LIKE MAIN BEARINGS.
What is normal oil pressure for a 1992 Chevy 5.7L 350?
It depends on how your gauge is callibrated. It should be somewhere near the center of the gauge and shouldn't drop much when it's idling or hot. The manufacturer recommends a specific "weight" of oil, but when the engine gets older and worn the pressure will drop when hot and at an idle unless you select a higher viscosity oil. Oil lines have a pressure regulator which keeps the oil pressure from going too high. You should be able to see where the pressure is set when you first start the engine and everything is cold; the gauge should go up to that point and stop there consistently and should also stop there when you're running at highway speed. If the oil pressure drops much below that point when you're idling, the main and/or rod bearings are wearing which allows too much oil past.Again, IF the oil pressure is low, ahigher viscosity oil will staypressurized in the oil linesa little longer and will keep the engine from failing. If you have any questions, feel free to contact me directly.
What causes oil pressure to drop when idling on 98 suburban?
The oil is hot and the rpm's are low. When you first start up the internal rotating parts are colder and tighter then at operating temp which will drive the oil pressure up, as the engine gets to operating temp the gaps around the internal rotating parts change due to temperature, causing oil pressure to drop at an idle. Most people never notice this due to having warning lights instead of gauges.
What is the ideal oil pressure reading for a Buick LaSabre with a V6 engine?
There is no ideal pressure. Of course the oil pressure will be higher when the engine is cold. After it is running and at full operating temp, the pressure should read at least 10 lbs while idling. The pressure will be directly related to how many miles are on the engine and the amount of wear. A new engine will have around 40 lbs when hot and running at 2,000 rpms, and around 30 lbs at idle.
Why do your values tap when going on the highway?
What makes you think it's valve noise? How's your oil pressure? If you only have a light, does it flicker or just plain turn on when the engine is hot and idling? If it's an oil pressure gauge, is the oil pressure down near the bottom during idle? If you have poor oil pressure and the engine is making a tapping noise when you accelerate hard, it
How should the transmission fluid be checked on a 2002 Ford Escape?
The engine should be hot and idling in park.
What is the normal oil pressure gauge reading for a 2008 Tahoe Hybrid?
Hot, idling in drive, 20 lbs.
What is the oil pressure for a vw Beetle when engine is hot?
22
The Motor was repaired but when the oil is hot the Pressure goes down?
It is normal for the oil pressure to drop some when warmed up.
Why does your temperature gauge drop when engine is hot on ford focus2005?
check the antifreeze
