Question about 1991 Mitsubishi Eclipse

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Oil gauge reading on my dash

When I'm driving my car where should the needle be should it be on the high side or the low side I'm not sure about this. On my gauge I have an L on the left in the middle is an oil can and to the right is an H. I dont want the car the oil pressure too hot. I just need to know that I'm reading the gauge right.

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  • 87 Answers

Any where from a quarter to half way is fine. After this the oil presser is getting to high. be sure you run 10-30 in the winter and do a oil change in spring time to 10-40 . oil will thin in hot temp. thus using a thicker oil like 10-40 in the summer will help keep oil presser down .

Posted on Jul 12, 2008

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keemo68
  • 1263 Answers

SOURCE: oil pressure gauge reads past 80

now unless there is a very loud knocking of the motor which would mean that the engine's top end was not getting any oil I would say that your oil guage is sprung and needs replacing. a high pressure rating would indicate a restriction in the oil flow pasdt the sending unit or a plugged oil filter. if the filter were plugged you would know it because your enging would run tight in no time at all. replace the guage itself... please rate this........thanks

Posted on Sep 29, 2008

  • 1 Answer

SOURCE: Oil gauge high

The pressure will depend on the temp. of the engine, and the RPM's. Just make sure you have the correct amount of oil in your engine. I wouldn't worry about the pressure until it gets too low, then your almost out of oil. Mine currently stays above mid-point as well.

Posted on Dec 11, 2008

  • 50 Answers

SOURCE: 1993 Jeep Grand Cherokee, V6. Oil Pressure Gauge Read High.

it could be the sensor you should look at the oil pressure relief valve

Posted on Jun 10, 2009

  • 701 Answers

SOURCE: oil pressure gauge shows low / high / middle changed sensor did

Hello mb4494: My name is Roger and I will help you. If by changing the oil pressure sending unit the problem did not change. I would perform a oil pressure test. This is done by removing the oil pressure sensor and inserting a oil pressure gauge. This can be done by yourself or by a repair shop. This needs to be done on a cold engine. Start the engine and observe the oil pressure cold.as the engine warms up observe the pressure. The pressure will drop off as the engine warms up.Should the oil pressure drop below 10 to 12 PSI. then you have internal engine trouble. More then likely a bearing problem. Try dropping the truck into gear and see what the pressure drops off to. Again if the pressure drops below 10 to 12 PSI. you have a problem. I would also check to make sure you have the correct oil switch. a truck with a oil light uses a oil pressure switch. with a gauge you would use a oil pressure sending unit. Sorry for the long reply but want to make sure you check the pressure correctly. Please rate the quality of the answer as this is how we know the answer was correct. Thank You for using Fix Ya. Roger

Posted on Jun 16, 2009

  • 7353 Answers

SOURCE: 2001 ranger 4.0l oil pressure sender location? the

the sender should be near the filter., but if the needle is that far off, your problem is in the instrument cluster.

Posted on Oct 04, 2009

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96 Chevy blazer how do I get out of safe mode ran low on oil now runs an drives but won't let car go fast past 2000rpms


The computing system on your vehicle has no safe mode for running low on oil . The only thing that will happen is the check gauges light will come on.
The oil pressure gauge is an analog device that is located in the IPC. The oil pressure gauge is operated directly by the oil pressure sensor circuit. As the engine oil pressure changes, the resistance of the sensor and the current flow in the oil pressure gauge changes. The current flow in the oil pressure gauge causes the needle to move in order to appropriately display the engine oil pressure. A sensor resistance of 1ohms will display as 0 kPa (0 PSI) and a resistance of 88 ohms will display as 80 kPa (80 PSI ). The IPC also monitors the oil pressure sensor circuit and interprets the current flow in this circuit in order to determine when the engine oil pressure is too low. If the oil pressure is too low, the check gauges tell tale will turn on. The oil pressure sender is located on the left side of the 2.2L. The 4.3L engine, oil pressure sender is located at the top left side, near the distributor/high voltage switch.
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Has 358000 miles, just had leaks repaired. Twice since my oil pressure gauge reads no pressure but not all the time? Why


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
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3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

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Oil pressure sending unit


You should check the oil pressure with a mechanical gauge. If that gauge also reads low you probably have a major engine problem. If the pressure is normal on the mechanical gauge you have a problem with the electric gauge. Probably the sender, dash unit or wiring.

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Location of oil sending unit on 1990 ranger 2.9


Here's a link to your oil pressure switch,here's the part.As you can see there are 2 types,one for light and one for gauge.
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  • Undetected high or low oil pressure can result in internal engine damage and/or gasket leakage

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How can i fix the oil pump


see this tips and fix it. God bless you
The oil pump supplies oil to lubricate your engine. If the oil pump is worn or is not turning, the engine will suffer a loss of oil pressure, which may result in engine damage or engine failure.
The first sign of trouble may be a low oil pressure warning light, a drop in the normal reading on you oil pressure gauge (if your car has one), or the appearance of ticking or clattering sounds from your engine.
As a rule, most engines only need about 10 PSI of oil pressure for every 1,000 RPM of engine speed. Oil pressure will read higher than normal when a cold engine is first started because the oil is thick. Oil pressure will gradually drop as the engine warms up and the oil thins out. So normal oil pressure on a warm engine cruising down the highway is typically 30 PSI up to 45 PSI.
SYMPTOMS OF OIL PUMP TROUBLE
The first thing you should do if any of these symptoms occur is to stop your car, turn off the engine, let it sit for a few minutes, then check the oil level on the dipstick. If the oil level is at or below the ADD line, add a quart of oil to bring the level back up to the full mark. Add as much oil as is needed to raise the level to the full mark. Then restart the engine. If the warning light remains on, or the oil pressure reading does not climb back up to its normal range, or the engine noise does not go away, you may have a bad oil pump.
The other possibilities include a bad oil pressure sending unit, or a problem with the oil pressure warning light circuit or oil pressure gauge.
OIL PRESSURE SENDING UNIT
If the engine is NOT making any unusual noises and seems to be running normally, and the oil level on the dipstick is FULL, but you are still getting a low oil pressure warning light or low gauge reading, the fault could be a bad oil pressure sending unit.
The oil pressure sending unit is mounted on the engine block. On some applications, there is a spring-loaded pressure-sensitive diaphragm with a switch inside the sending unit. This switch completes the circuit to the low oil pressure warning light if oil pressure drops below a certain threshold. The unit may stop working if the diaphragm inside fails, if the switch is stuck, if the small hole that allows oil to enter the sending unit becomes plugged, if there is a loose, corroded or broken wiring connector at the sending unit, or there is a fault in the wiring circuit between the sending unit and warming light.
On vehicles that have an oil pressure gauge (electronic, not mechanical), the oil pressure sending unit has a small rheostat inside that sends a variable voltage signal to the oil pressure gauge when the diaphragm moves. A worn spot on the rheostat or any of the other problems just described for the simple pressure-type oil pressure switches can cause a problem.
FORD'S FAKE OIL PRESSURE GAUGE
On many Ford vehicles that were built from 1980 through the 1990s, the oil pressure sending unit has two switches, a low pressure and a high pressure. These vehicles also have an oil pressure gauge, but the reading on the gauge is not a true indication of real oil pressure. As long as the pressure to the sending unit is between high and low, the gauge will read normal. If oil pressure drops and trips the low pressure switch, the dash gauge will now read low. Or, if oil pressure goes up and trips the high switch inside the sending unit, the dash gauge will read high. Consequently, don't rely on the oil pressure gauge for an accurate reading in these vehicles. It is only a gross indication if the oil pressure is low, normal or high.
OIL GAUGE PROBLEMS
If the engine is NOT making any unusual noises and seems to be running normally, the oil level on the dipstick is FULL, and you have replaced the oil pressure sending unit but are still getting a low oil pressure reading on the dash gauge, the fault could be in the wiring circuit between the sending unit and gauge, or the gauge itself might be bad.
Check the wiring connections on both ends as well as wiring continuity between the sending unit and gauge. If no wiring faults are found, hook up a pressure gauge directly to the oil pressure port on the engine and check oil pressure with the engine running. If the engine-mounted gauge shows normal oil pressure but the dash gauge is reading low, the problem is a bad dash gauge.
On the other hand, if the engine-mounted pressure gauge reads low and you have done all of the above, chances are the oil pump is worn, or it is not picking up enough oil because of a restriction or blockage in the pickup screen in the bottom of the crankcase.
OIL PUMP PICKUP PROBLEMS
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Sep 28, 2012 | 1996 Toyota Tercel

1 Answer

I have a dodge ram van 250 1991. It seems like the reading onthe oil pressure guage on the dash has over time gotten so it is lower and lower, however, my spouse disagrees. It would be helpful to know...


Hi Harvey

this sounds correct to me, oil pressure on nearly all gauges should sit around the middle so 4 or 4.30 would be correct. Does the car have any issues at all or are you just concerned? a reading to high suggestes a blockage in the oil or "black death" as it's known in the trade this is caused by cheap oil builing up and being carbonated within the engine. the other side is when the oil pressure is low meaning the oil pump is failing and therefore not pumping to the top of the engine.

If it was mine I would be happy to say thats a healthy engine reading.

Regards and a god new year to you.
Dan

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1 Answer

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Jul 10, 2008 | 1991 Mitsubishi Eclipse

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