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Very High Oil Pressure

Oil pressure keeps rising to the point the pressure shot the oil dipstick out like a rocket. What could cause this it has a new filter and fresh oil. This problem just started

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High temp low oil pressure light comes on after driving for a few minutes, then off when engine at driving rpm. At stop light (idle or low rpm) light comes back on. Normal driving it goes out.


You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

Jul 06, 2015 | 2003 Ford Expedition

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At idle the oil pressure light comes on


i would say the car is safe to drive.IF the pressure sensor was working correctly, and your engine was a complete dog, then you would expect there to be some loss of oil pressure, but not 0 to 4bar in a blip of the throttle.given that the oil pressure sensor is a common fault (and it controlls the oil pressure light, it is not a seperate switch), i would say the sensor has a 'dead' spot on it, and a blip of the throttle just sees it outside the dead zone of its reading, and pings back to 4bar (its natural to get a slight rise in oil pressure when higher revs are acheived). 4bar is the right value, its what mine sits at. maybe a tiny bit under (3.95) when the engine is very hot/in traffic the oil pressure is reading just over 4 at all times, dosent go up or when accelerate or down at idle is this normal, used to mercedes W124 where it can register .3 up on idle but when accelerate it should goto max, ie 3 bar Whats the mileage on the car. Sounds like It certainly is suffering from low oil pressure at tickover, but loads of cars do and continue running for thousands of miles. blue/white smoke on start up and that points to valve seals and, yes, the head would have to come off to replace them, but it's normally just blue smoke. White smoke points more to head gasket, but that would be replaced anyway when doing the valves.Bet the engine sounds smooth as silk too
Oil pressure is determined by the rate at which oil flows through the internal combustion engine of a car. Low oil pressure is a real danger for engines, as it indicates that the bearings in an engine have worn, allowing the oil to flow more easily and at a lower pressure. However, high oil pressure is generally not a concern for motorists. Oil pressure fluctuates with the heat of a machine, and though high oil pressure can indicate a serious problem, it generally means the engine is in an adjustment period.Oil Pressure at Idle For many cars, oil pressure is much higher upon start-up or while idling. The reason for this has to do with the temperature of the engine. When an engine has been sitting turned off, it cools down, as does the oil that flows through the machine. Upon start-up, the engine temperature begins to rise. As it rises, so to must the oil heat up to find a level pressure to flow through the machine. Cooled oil is thicker, causing it to flow more slowly and at a higher pressure through the machine, until it reaches its optimal operating temperature.Pressure Relief Valve Recurrent high oil pressure, even after the machine has been running for a while, can indicate a problem with the pressure relief valve. The pressure relief valve is responsible for regulating oil pressure throughout the internal combustion engine. It is a safety device intended to keep vessels or piping from experiencing extreme pressure. When this device is malfunctioning, it will cause high oil pressure in an automobile.Types of Oil The type of oil put into an engine can also account for extremes in oil pressure. Low-weight or thin oils will operate with low oil pressure, as they will pass through the machine quite easily. Thicker oil will pass through the machine at higher oil pressure readings. Generally, after an oil change, when fresh oil is introduced into the machine, oil pressure will increase. This, however, is only a sign that the oil that formerly operated your car was too thin for optimal performance.

Oct 19, 2011 | 1995 Jaguar XJ6

2 Answers

Just replaced oil pump still have low pressure 14-20 pounds at 2500 rpms


Set your timing when u remove the oil pump it will surley affect the timing on your motor.... do this with a timing light and and adjust timing by rotating the distrubutor.

Mar 18, 2011 | Ford Taurus Cars & Trucks

1 Answer

The oil pressure guage on my 2006 nissan frontier is reading very high after recently changing the oil, however, the correct amount of oil was added during the change. Furthermore the oil dipstick...


The guage may rise a little when you accelerate the vehicle...but if it is pegged high, and does not fluctuate, when you turn your ignition key on an off...Your oil pressure switch maybe going bad...Goodluck

Dec 04, 2009 | 2006 Nissan Frontier

1 Answer

My check oil ligt keeps coming on and off, what causes that?


high or low oil level, make sure dipstick reading proper level. hig or low oil pressure chk with psi gauge

Nov 15, 2009 | 2005 Chevrolet Equinox

3 Answers

Shooting oil out of dipstick


Your engine breather system is blocked....this means that the only way that the compression caused on ignition that is getting past the piston rings and into the block can escape is via the dipstick tube.
Check breather for kinks and some have filters ensure that these are not blocked

Oct 03, 2009 | 2000 Dodge Intrepid

1 Answer

Oil pressure light comes on, especially after stop and go driving in hot weather. Dipstick says enough oil in car.


Oil filter blocked

Oil pump shot

Oil pressure sender switch shot

Does the engine temperature climb

Is the car burning oil

Wrong oil , are you using a multi-grade

Jun 30, 2009 | 2007 Volkswagen Jetta 2.5 Sedan

2 Answers

When the engine temperature is cold the oil pressure will climb depending on the RPM's. If I keep the RPM's below 1800, the oil pressure will remain at 3/4. If I go beyond 1800 RPM's with the engine block...


You need to have a mechanical test gauge hooked up to see if this is a false reading, this special gauge goes into the oil sender tap in the block and will let u know for sure if the pressure is to high cold, if it is the most common issues are wrong weight of oil, do u use oil heavier than 10W-30W? any other oil like 10W-40W will cause high oil pressure readings, the reason is the very tight rod and main bearing clearance's the engines now use, it is only about 1/2 the clearance of older engines, that is so the new fuel saving thin oils can be used.

May 13, 2009 | 2000 Jeep Wrangler

1 Answer

Oil pressure fine when i start car. when you drive for a little the pressure will drop and rise any solutions.


Depending on the range of rise and fall, this is completely normal. Oil thins out as it gets hot so you will notice the pressure drop significantly at hot idle. A typical value would be 20psi, then as the engine revs up, the pump creates more pressure because it can now keep up with and exceed the leak-down or bleed-off from the bearings. The maximum pressure would be limited by the relief valve in the oil pump which could typically be as high as 60psi.

Mar 11, 2009 | 2000 Jeep Cherokee

1 Answer

Low Oil Pressure and rough idle


Please understand, all I can offer you are suggestions, since I don't have access to hands on testing. You might first change oil and filter.
If going by the oil pressure guage, low oil pressure can mean worn crankshaft bearings, as the clearance between bearings and crankshaft is what determines oil pressure.
Of course a worn oil pump can cause the same problem.
You might want to connect an external oil pressure guage to the engine to verify the pressure reading.

The rough running at this point would be hard to pin poit.
Because I do not know the extent of the rust, I can suggest that you consider having it undercoated.

Again, I can only make suggestion because you need an absoluate diagnosis.
jetski

Nov 27, 2008 | 1986 Alfa Romeo Spider

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