Question about Jeep Grand Cherokee

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I just noticed that my oil pressure gauge reads high. Any ideas? 2002 grand cherokee 4.0

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Better high than low, but if too high, may be a possible stuck oil pressure relief valve. Recommend a shop diagnosing this problem.

Posted on Oct 10, 2010

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CHECK OIL PRESSURE SENDING UNIT

Posted on Oct 10, 2010

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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

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1 Answer

I have a 2002 Jeep Grand Cherokee Laredo. When I go above 30 ish it starts to whine, but if I turn off the overdrive, the sound goes away. What could this be? Also just recently my oil gauge is really...


Check the level of the differentials, transmission and transfer case. any of those if low can cause a whine...hopefully if low you haven't sustained any major damage. Could also be an internal converter problem.
As for the oil pressure being high, you may have a sticking pressure relief or the wrong oil filter installed. Check the filter number and make sure it gets warm (if not oil isn't going through it) and you can add some marvel oil to the engine which will often clear up any internal valving problems. Could also be a bad sending unit....only way to know that is to either replace it or have an external test gauge installed and read the actual pressure.

May 24, 2010 | 2002 Jeep Grand Cherokee

1 Answer

My oil pressure gauge is reading high, if the car is turned on and parked, or when ever I stop, the car is giving gas as if i was stepping on the gas pedal.


have oil pressure checked to see oil pump is faulty.make sure your oil is the right viscosity if too thick that will cause high pressure.if all is good.your pressure gauge is faulty.

Nov 18, 2009 | 2002 Jeep Grand Cherokee

2 Answers

2002 Jeep Grand Cherokee 4.0L oil pressure gauge reading too high


if the gauge starts a 0 - goes to 1/2 , than full - sounds like gauge is OK - seems to me like the sending unit is bad - you could try removing the sender and trying to clean out the port with "brake clean", letting it dry than re-installing it. the pressure switch is still the least expensive place to start

Oct 27, 2009 | 2002 Jeep Grand Cherokee

3 Answers

2002 Jeep Grand Cherokee 6cyl 4.0 - High oil pressure


its probably the sender. there is no good way to test them without a mountain of tools. its easier to replace the sender i think its pretty cheap

Sep 14, 2009 | 2001 Jeep Grand Cherokee

1 Answer

Oil Pressure Always Runs High - 2002 Grand Jeep Cherokee


If your oil pressure is running in the red this would indicate too much oil in the system. You should have your oil changed and refilled soon or you run the risk of burning out the oil pump. At idle your pressure should be just over a quarter of what your gauge has. At highway speed it should not exceed 3/4 of the gauge unless your going in excess of 100 MPH. Change the oil and filter and your vehicle should be fine.

Jul 27, 2009 | 2001 Jeep Grand Cherokee

1 Answer

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


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

Jun 10, 2009 | 1994 Jeep Cherokee

1 Answer

No/low oil pressure, high engine temp


I think you have a bad ground on your engine gages...but, more importantly, have your oil pressure checked by a mechanic.  If it is indeed only 20 pounds the engine is sadly on it's last legs.
When you receive advice from this website you have to understand that without the item in front of us, we are only able to provide "a best guess" as to what the problem might be based on you description of the defect.  If you haven't described a clear and precise description of the defect you decrease the chances of an accurate reply.  Thank you.   

Apr 28, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Engine light on/Oil Gauge on stays on high


Any waranties left? Is oil full? Any noises from engine? Did you put a mechanical gauge on it and check "real" oil pressure? (I would not drive it 'till I was sure about actual oil pressure!!)

Feb 25, 2009 | 2002 Jeep Grand Cherokee

1 Answer

2002 Jeep Grand Cherokee 4.0L Oil gauge reading very high


If the weather in your area is colder than normal, your startup oil pressure will reflect this, essentially because it is much thicker when very cold. This high reading should drop to "normal" once it reaches operating temperature. This condition can also be caused by a sticking pressure relief in the oil pump, usually caused by sludge inside the engine. If you regularly maintain your vehicle and use good quality oil, this should not happen. The oil pressure sending unit is also suspect, but in your case, I would not put it at the front of the list. If oil is close to "change time" consider using a good synthetic oil (synthetics flow better at extreme temps) or using a 5W anything oil during winter months. (see manufacturers specs)

Jan 22, 2009 | 2002 Jeep Grand Cherokee

1 Answer

1992 jeep wrangler oil pressure goes off scale while accelerating


try replacing the oil filter and oil make sure u use the right grade oil for it if it still does it u need yo go to mechanic or if u have one connect a external oil pressure gauge to the engine to check if the car gauge is reading correctly if it is reading right then the oil pressure releif vale is stikking

if the car gauge is reading wrong change oil pressure sender

Dec 20, 2008 | 2002 Jeep Grand Cherokee

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