Question about 2002 Jeep Grand Cherokee

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Oil pressure goes to high right away as soon a car is started on

The oil guage on my 2002 Jeep Grand Cherokee goes straight to high as soon as the engine is started. Car runs fine. Oil is full.

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  • Anonymous Mar 18, 2014

    why is my oil pressure high on my 1996 Jeep Cherokee

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Try replacing the oil pressure sending unit

Posted on Feb 27, 2009

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2 Answers

I have a 2002 jeep Cherokee oil gauge show max out when i start the Eng


When oil is cold, pressure will read high, but as it warms up pressure indicator should drop to normal. Are you using the correct weight oil for your weather conditions? Running straight 30 weight, or say 20w50 could cause this issue.

Dec 19, 2014 | 2002 Jeep Grand Cherokee

2 Answers

How do I check oil pressure with a guage


Remove the oil pressure switch. It is typically located near the oil filter. Install the appropriate fitting from the oil pressure gauge kit. Install the gauge. Start the vehicle.

Jul 08, 2014 | 2000 Jeep Grand Cherokee

1 Answer

2002 jeep grand cherokee, oil pressure guage to the maximum high limit. Oil level okay, Oil change mechanic says common among these cars. I'm still curious what to do. thank you. 6 cyl.


It may be that the oil pressure switch is faulty. Find the oil pressure switch and unplug it and see it it goes to the min. If it does I would suggest getting a new switch. Also, the oil pressure switch wire might be grounded out against the body or the motor somewhere.

Jan 05, 2011 | 2002 Jeep Grand Cherokee

1 Answer

High oil pressure on guage. It goes to zero with engine off. Where is the sensor?


High oil pressure is ok, lack of pressure if the engine is running, is very bad. Pressure is supposed to drop to zero as soon as you turn off the engine, nothing abnormal about that.

Jun 21, 2010 | 2000 Jeep Grand Cherokee

2 Answers

Jeep Grand Cherokee almost overheating!


Check your oil level first and make sure its at the correct level. A couple of things, if your guage is going up it's a bad guage/sending unit are easiest checks. If it goes way up while driving you probably have an oil passage blocked somewhere causing the pressure to spike maybe a spun bearing (lower motor). Does it make any rattling/knocking noise? If not I would get it checked out ASAP, low/high oul pressure can lead to severe engine damage/failure.

Aug 09, 2009 | 2002 Jeep Grand Cherokee

2 Answers

2005 Jeep Grand Cherokee v6 low oil pressure at idle


have a 2000 jeep grand cherokee with 84,000 miles. started having issues with oil pressure gauge going crazy up and down, beeping. had oil pump replaced per mechanics recommendation. didn't help won't hold pressure---only registers about 2. now they tell me i need a new motor!!! just bought vehicle less than 1 yr ago...had carfax clean report!!!!any suggestions?

Apr 17, 2009 | 2002 Jeep Grand Cherokee

1 Answer

2004 Grand Cherokee: oil pressure fluctuates


if you know for certain that the sending unit is correct and the guage is accurate, then yiu may have big problems.....while the engine is running open the oil filler hole.. is everything wet with oil? or does it look dry or just a little lubed? you can allways install an aftermarket oil pressure guage(crappy tire) if you get the same results with that then you may have a week oil pump....worst case scenerio... need an engine rebuild as the moter may have wear issues.does the pressure slowly drop as the motor warms up? at idle ? does it jump up when you step on the gas?

Mar 30, 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

Hi grand cherokee 1999 ,the oil guage read to MAX.


Just got word from an expert standing behind me (my son); remove the oil pressure sensor (on an I6) near the oil filter, clean it (small orifice) and put it back in. They just 'cured' one this AM.
If it doesn't work, (does 2 of 3 times) it is not an expensive part and widely available. 

Jan 18, 2009 | 2002 Jeep Grand Cherokee

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