Question about 2002 Jeep Grand Cherokee

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2005 Jeep Grand Cherokee v6 low oil pressure at idle

Already had the engine fixed from blown head gaskets. Two days later my low oil pressure light goes off at idle (at stops signs etc), and as soon as I get up to 600rpms or higher it goes out. Had the oil sending unit replaced, and less than 1000 miles later it is happening again. The mehcanics think its a bad oil pump and is gonna cost me a lot of $$$.

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  • Anonymous May 18, 2009

    I have the same problem.. 1994 YJ.. Except my engine has all new parts.. Nothing used.. Start it has 50 psi then drops to 0 psi in a few min.. Checked the psi with a manual guage.. It is reading the same.. No knocks no rattling.. I call Jeep they said to clean the gally plug under the oil pressure sending unit.. If this doesnt work.. Any ideas?

  • Anonymous Mar 23, 2014

    need to find oil sending unit on 2005 4.7 grand Cherokee oil light on

  • Anonymous Mar 23, 2014

    location of oil sending unit

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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?

Posted on Jun 07, 2009

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I would try a oil prusher gage and see what the oil prusheris for shore.when your engine idel your oil prusher will drop.jeep are not know for haveing bad oil pump. it could be a bad oil pump.good luck

Posted on Apr 17, 2009

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1 Answer

Low oil light


Low oil pressure red light ? Does it come on when idling in drive ?
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Jan 31, 2009 | 1994 Jeep Grand Cherokee

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