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  1. #1
    Join Date
    Dec 2015

    Default 01 XJ oil pressure

    Can anyone tell me the proper oil Pressure when it warms up at idle mine use to be between 15-20 psi and now I've noticed it around 10 or a hair above is that too low? When its cold and just started its up around 40 and use to drop 15-20 when up to temp and driving at idle and then goes back up around 40 on acceleration and now Like i said I've noticed it a hair over 10psi at idle anyone know whats the normal range? Thanks.

  2. #2
    nickyg's Avatar
    nickyg is offline Level: Uber Jeep Cherokee Trailer Queen
    Join Date
    Feb 2013

    Default Re: 01 XJ oil pressure

    Mine's a taste over 40 when it's cold or at speed and a hair over 20 when it's warm and/or ideling. But I'm not sure if that's accurate or not. I don't put too much stock in factory gauges
    One more part and I'll have a new Jeep

  3. #3
    Join Date
    Nov 2011

    Default Re: 01 XJ oil pressure

    The minimum oil pressure should be not lower than 13psi at hot idle. Sounds like the bearing clearances of your engine have become excessive. You could try a thicker grade of oil as a bandaid.

    1992 XJ - 4.6L Stroker - AX15 - Sold 13/12/2016
    202rwhp 258rwtq (248bhp 311lbft crank)
    Jeep Performance, Jeep Tech, Junker to Stroker

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