Question about 2000 Jeep Grand Cherokee

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I have a 2000 jeep grand cherokee. When i crank the car, the oil pressure gauge goes all the way over to 80. It stays that way while I'm driving. Sometimes it will drop slightly as I accelerate , but goes right back to 80. I have also noticed a slight whistling sometimes when I accelerate. Thanks!

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Whistling noise is prob. intake leak or emmissions air flow problem, the oil gauge, is either , oilpump screen clogged, or gauge prob. or if a lot of miles it could be the engine is just getting weak, or oil pump itself. check oil level, and sensor for leaks .

Posted on Mar 30, 2011

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1 Answer

Oil pressure gauge goes up to 80 pounds


80 lbs is good. It's more like around 50, it's probably the oil sending unit. Take a look at it aand make sure it in't leaking. If there is any oil covering it and none coming from above it is leaking. I don't know engine size, but they are usually located around the oil filter.

Apr 29, 2011 | 2000 Jeep Grand Cherokee

1 Answer

What does it mean when the check gage light come on and the oil pressure hand goes to the zero mark? I have a 2000 jeep grande cherokee limited with 124,000 miles.


Either the oil level is very low or the engine bearings have failed (assuming the gauge is accurate) if the engine isn't making noise and the level is full have a mechanical gauge installed to check actual pressure. if good, the sending unit or gauge is faulty.
If in doubt, do not drive or run the engine 'tll the problem has been diagnosed.

Feb 04, 2011 | 2000 Jeep Grand Cherokee

1 Answer

The oil pressure guage on my 2000 Jeep Grand Cherokee is registering 0. My oil was just changed and I don't see any indication of oil leaking anywhere. Could it be the sensor?


First off I wouldnt drive your car until you make sure that you have indeed oil pressure and that the gauge is a false reading, driving your car if in fact it has no oil pressure will severly damage your engine, but firstly i would check the oil pressure switch its located on the passenger side of the engine right back from the oil filter make sure the connector is clean and free from oil and corrosion if the connector appears to be in good shape take a paper clip and insert it between the 2 terminals inside the connector your oil pressure gauge should peak at 80 PSI that tells you that your gauge and all related wiring are good and in working condition, secondly remove the oil pressure switch and hook an manual oil pressure gauge up to you engine and start the engine the guage should have a oil pressure reading anywhere from 30 PSI to 55PSI depending on engine temperature if theres oil pressure on your manual gauge replace the oil pressure switch with a new unit, if you still have 0 PSI on your gauge then stop your engine immediatly and start looking at your oil pump and lubricating system for a problem.

Dec 06, 2010 | 2001 Jeep Grand Cherokee

1 Answer

2000 jeep grand cherokee upon start up oil pressure goes immediately to the right 80 upon acceleration goes to left just after 60


sounds like couple things one you need check oil make sure it is not low on oil or over full and if it ok still doing it you may need a new oil pump it is faulty check oil level first when real low or high they do this too

Sep 24, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Have high oil pressure reading when driving goes down to 55-60 when sitting at light,2000 jeep grand cherokee laredo 2-wheel drive 4.0 litre engine


the 1st thing that needs to be done is have a mechanical oil pressure test gauge hooked up to confirm the actual reading, the electronic gauge many times is incorrect.

Feb 16, 2010 | 2000 Jeep Grand Cherokee

1 Answer

My 2000 jeep grand cherokee was making a faint grinding sound, that got louder anmore clear to make out. It wouls get louder as trie to pick up spee, and I wouldhave go slower and slower each time, I check...


Your engine may be junk now. First, get the oil pressure tested with an external gauge to verify that it is low, and that your oil sending unit or vehicle gauge isn't the problem.
Low oil or pressure wears out crank bearings, which destroys oil pressure.

Feb 06, 2010 | 2000 Jeep Grand Cherokee

2 Answers

Oil pressure gauge shows 60-80


the oil sending unit that screws in the block beside the oil filter may be faulty,
the worst thing would be the oil pump its self the regulator valve on it

Jan 26, 2010 | 2000 Jeep Grand Cherokee

1 Answer

94 jeep grand cherokee oil pressure and engine temp?


I'm guessing your engine is'nt making any tapping noise with the low oil press.
Your oil pressure sending unit is most likely the culprit.
Is your car smoking when the temp. goes up?
You engine could be air bound or thermostat could be opening too late (might need new one).
PLEASE DO NOT OPEN THE RADIATOR CAP WITH A HOT ENGINE.

Oct 05, 2008 | 1994 Jeep Grand Cherokee

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