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Oil pump going bad?

Discussion in 'Cherokee' started by Billy1234, Oct 16, 2019.

  1. Oct 16, 2019 at 11:45 AM
    #1
    Billy1234

    Billy1234 [OP] Well-Known Member

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    So befor I get in to it. Yes the jeep is stock besides a 3 inch lift everything on the drivetrain is STOCK. No lights on at all. so now that the normal questions are 9ut of the way. While Driving the oil pressure drops to below 10 psi. Sitting at a light it goes back to 40psi. When I hit the gas in ANY gear it drops to almost nothing. Could this be the pump going bad or what's going on?
     
  2. Oct 16, 2019 at 2:40 PM
    #2
    Prerunner1982

    Prerunner1982 Well-Known Member

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    That does seem backwards, usually lower at idle than under acceleration.
    If you go in there for the pump you might as well check the bearings and replace the rear main seal.
     
  3. Oct 16, 2019 at 3:15 PM
    #3
    Awrench

    Awrench Well-Known Member

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    AS MENTIONED THAT SOUNDS 'BACKWARD' HAVING HIGHER PRESSURE AT IDLE - TYPO ?
    PUT A MECHANICAL GAUGE ON THE ENGINE TO CHECK TRUE PRESSURE.
    THEN LET US KNOW.
     
  4. Oct 16, 2019 at 6:03 PM
    #4
    Jim Beam

    Jim Beam Well-Known Member

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    Yes, check it with a mechanical gauge. A temporary installation if you don't like the stupid thing in your vehicle.
     
  5. Oct 17, 2019 at 12:46 PM
    #5
    Billy1234

    Billy1234 [OP] Well-Known Member

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    I'll get one on the way home you think this could possibly be just a bad ground?
     
  6. Oct 18, 2019 at 12:24 PM
    #6
    Jim Beam

    Jim Beam Well-Known Member

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    Bad ground connections can always be an issue, it can't hurt to put in a few extra. The ground should be wired directly to the battery negative terminal.
     
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