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93 ZJ 5.2 Oil Pressure Sending Unit Leak

Discussion in 'Grand Cherokee' started by TinyInkognegroT, Sep 28, 2019.

  1. Sep 28, 2019 at 11:16 AM
    #1
    TinyInkognegroT

    #1
    TinyInkognegroT [OP] Well-Known Member

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    I thought I had a rear main seal leak but turns out the oil pressure sending unit is cracked and faulty and leaking a lot of oil from my engine, causing it to run down the back the engine pan, making it easy to be mistaken for a rear main seal leak. Here's a video of mine with the engine running and it puking out oil.

    https://youtu.be/YNUWUEdggvA
     
    TinyInkognegroT, Sep 28, 2019
    #1
  2. Sep 28, 2019 at 3:43 PM
    #2
    Jim Beam

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    Jim Beam Well-Known Member

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    Good catch, I would think that the o.p. sending unit is coming apart and needs replacing.
     
    Jim Beam, Sep 28, 2019
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  3. Sep 28, 2019 at 5:58 PM
    #3
    aggrex

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    aggrex Well-Known Member

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    Heck of a lot easier than the rear main seal
     
    aggrex, Sep 28, 2019
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  4. Oct 3, 2019 at 12:13 PM
    #4
    TinyInkognegroT

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    TinyInkognegroT [OP] Well-Known Member

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    Yea check out this leak, this was after sitting for 30 min...

    PHOTO_20191003_083211.jpg
     
    TinyInkognegroT, Oct 3, 2019
    #4
  5. Oct 3, 2019 at 3:24 PM
    #5
    aggrex

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    aggrex Well-Known Member

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    Ok lets get that oil leak fixed....that mini oil spill ain't fun to step on nor slip on
     
    aggrex, Oct 3, 2019
    #5
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  6. Oct 3, 2019 at 4:19 PM
    #6
    TinyInkognegroT

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    TinyInkognegroT [OP] Well-Known Member

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    New part comes in Saturday.
     
    TinyInkognegroT, Oct 3, 2019
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  7. Oct 6, 2019 at 5:34 PM
    #7
    TinyInkognegroT

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    TinyInkognegroT [OP] Well-Known Member

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    Replaced the oil pressure sending unit and no more oil leak. I also changed the oil and filter and added Lucas oil stabilizer, 3.5 qts of high mileage 10w-40 and 1 quart of Lucas.
     
    TinyInkognegroT, Oct 6, 2019
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  8. Oct 6, 2019 at 7:39 PM
    #8
    aggrex

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    aggrex Well-Known Member

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    Another important fix completed....just a few more big ones ;)
     
    aggrex, Oct 6, 2019
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  9. Oct 7, 2019 at 5:58 AM
    #9
    TinyInkognegroT

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    TinyInkognegroT [OP] Well-Known Member

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    Yeah the oil was real black and sluggish. My oil pressure gauge does read 80 psi but I don't have a check oil light on and the engine doesn't seem to be running hard
     
    TinyInkognegroT, Oct 7, 2019
    #9
  10. Oct 9, 2019 at 12:01 PM
    #10
    TinyInkognegroT

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    TinyInkognegroT [OP] Well-Known Member

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    Should I worry about the oil gauge reading 80 ?
     
    TinyInkognegroT, Oct 9, 2019
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