Question about 2002 Jeep Grand Cherokee

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My 2002 grand cherekee check gauge lights keeps coming on and the oil gauge would drop when I slow down or is at a stop. Please advise

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This could be a faulty oil pump. or more commonly a bad oil pressure sensor you can call. If its the pump i recomend you have it fixed as soon as possible. The check gauges lights up because the oil pressure isnt as much as required. But common problem is the sensor replace the sensor and the engine oil along with a filter hope this solves your problem.

Posted on Oct 08, 2010

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I have a 2001 Jeep grand cherekee Laredo.. both the oil pressure Gage and the temperature Gage drops down while idling or stopped at a stop light or sign.. what do I need to fix? And how expensive is it...


Have the alternator output checked at idle and if the idle is too low incrtease it to spec idle revs. It appears that the voltage in you electrical system is too low for the gauges Check when at the lights take you foot of the brake and put tranny out of gear and see if there is a difference

Feb 21, 2013 | Cars & Trucks

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The oil pressure keeps going down and sets off the check guages light . This happens when i stop or slow down.


In this situation either you have low oil pressure or the oil pressure sending unit is faulty. I typically remove the oil pressure sensing unit and install a mechanical pressure gauge to verify actual oil pressure. If that checks out good then I replace the sensor. Oil in the connector for the sending unit is a good indicator that it is faulty.

Feb 23, 2011 | 1996 Jeep Grand Cherokee

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2002 jeep check check gauges light comes on only when i come to a stop and the oil gauge drops down. When I drive the the gauge goes up and the light goes off. Is this something major?! Its up to date on...


I would bet its the oil pressure sending unit. Very common on jeeps and chryslers. It is located right above the oil filter and is an easy DIY project and fairly inexpensive as well.

Jan 24, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

The oil indicator is very low and when I speed up it goes up when I slow down it goes down and the chek gauges light comes up. It has plenty of oil how can I fix it


First thing you need to do is have the actual pressure verified by attaching a mechanical oil pressure gauge in place of the sending unit on your engine. If the gauge verifies your dash readings then you have an oil pressure loss inside the engine that needs further diagnosis (worn bearings, obstructed pump pickup etc). If pressure drops enough to turn the light on I would not drive it 'till you know exactly what's happening inside or you can and will have an engine failure.
One warning...if after you remove the pan, you find that the pump screen is not obstructed, Don't blame the pump for the low pressure.....check the bearings. However, regardless of what you find (obstruction or worn bearings) it is advisable to replace the pump. Pumps generally don't fail but ingesting debris (carbon or metal from bearings) will either score or wear the pump housing and vanes enough so that the pump will never reach full pressure.
If the external gauge shows normal pressure, contrary to what the dash gauge tells you, blow out the sender passageway and replace the sender, then add marvel oil at each oil change as it will help dissolve any crud accumulated inside the oil system.

Jan 23, 2011 | 2001 Jeep Grand Cherokee

1 Answer

Dropping oil pressure


You need to put a mechanical gauge on it to read actual oil pressure, sometimes the sensor is wrong, have seen the gauge be off (even on newer than yours). The first thing anyone would do is the mechanical pressure test with a screw in oil pressure gauge. That would be my advise.

Aug 03, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

My oil pressure gauge goes to the H


Not really , when you give it gas it creates higher pil pressure at higher engine speeds, when the engine slows down there is less pressure on the oil.

Apr 03, 2010 | 2002 Jeep Grand Cherokee

1 Answer

I have a 2002 dodge ram 1500 w 176,000 + miles. When i come to a stop the check engine gauge comes on and the oil gauges immediatly drops. If I idle then the check engine light turns off. I done hear any...


Well Check your oil preshure with a proper gauge!
may have not sufisiant oil preshuire!!! or it might just be a faulty preshure senser!
Better that than defective oil pump! use caution as insefitient oil preshure will lead to ireprable engine dammage!!!!!

Have a good one .Bruce.

Mar 15, 2010 | 2004 Dodge Ram 1500

2 Answers

2001 Jeep Oil Pressure


Last week my 2001 Grand Cherokee with a 4.7 was dropping below 10 and my "check gauges" light and chime came on. My sending unit was bad. I could see it was bad because oil was getting through the unit and leaking very slow. It's located above the oil filter. Easy fix, but the unit was over $50 and the 1 1/16 special deep socket for sending units was over $10.

Oct 07, 2009 | 2001 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

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