Question about 2000 Jeep Grand Cherokee

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Irradic reading at oil pressure guage

I have a 2000 Grand Cherokee w/ a 4.7L V8. Started getting an irradic oil pressure readings at the guage the other day. Oil level is fine, engine sounds good, runs very smooth. Could this be a bad sending unit/switch?

Thanks

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  • Anonymous Mar 13, 2014

    Locat5ion of oil sending unit

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The sending unit would be the first thing to change, at least it would eliminate that.

Posted on Jan 25, 2009

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Why is the oil pressure reading 50 psi when the jeep is turned off


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Very first thing you need to do is install a mechanical pressure gauge on there to verify what you see on your gauge. If the actual pressure is low, then it's time to start looking inside the engine. If not, then you need to trace out the electrical problem but will know the engine is safe.

Jan 29, 2011 | 2001 Jeep Grand Cherokee

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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 will not start tempture gage reads hot


This is a safety system built into a Grand cherokee. If it gets hot or loses oil pressure it will shut itself down to prevent engine damage. If it hasn't been started and it reads hot I would say your coolant temperature sensor for the gauge has gone bad and needs to be replaced. They are fairly inexpensive and not to hard to replace.

Oct 03, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Oil pressure drops to zero when idling but is normal when running on 2000 grand Cherokee V8


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Aug 17, 2010 | 2000 Jeep Grand Cherokee

1 Answer

When first starting the 2000 jeep grand cherokee the oil pressure is fine, after driving 15 to 20 miles when you stop the oil pressure guage indicates the pressure dropping near 10 pds or less and the...


When the pressure reads low, are you hearing any knocking or tapping noises from the engine? If so, you may have worn engine bearings. I'd check the actual pressure by having a mechanical gauge installed on it in order to determine the actual pressure (your gauge is electro-mechanical and not quite as accurate) If pressure is actually that low the oil pan must be removed and bearings, oil screen etc need to be checked.
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Jan 04, 2010 | 2000 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. 

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3 Answers

Oil pressure gage at zero when engine is running on my 1999 jeep grand cherokee v8. plenty of oil in engine


if the engine is running normal and there are no odd sounds from engine. probably needs oil pressure switch or bad connection at switch. any ticking noises and i would have pressure checked with guage

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