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Oil pressure very high

Discussion in 'Volvo Forum' started by krasnii, Aug 30, 2019.

  1. Aug 30, 2019 #1
    krasnii

    krasnii Bobtail Member

    3
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    Jul 23, 2018
    0
    Hi,
    I own a volvo VNL 780 2006 (d12 engine).
    My oil pressure gauge shows 90 psi even when the engin is not running. I mean, I turn the key to on and it show 90 psi.

    I changed the sensor last week but no change.
    I also did a cluster test and everything seems normal.
    The connector to the oil pressure sensor had no oil and is clean.
    Do you have any idea what else to do?
    Thanks.
     
    krasnii, Aug 30, 2019
    krasnii, Aug 30, 2019
    #1
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  3. Aug 30, 2019 #2
    mhyn

    mhyn Road Train Member

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    Northridge, CA
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    Krasnii have you checked the raspredval ?
     
    mhyn, Aug 30, 2019
    mhyn, Aug 30, 2019
    #2
    Newto Trucking Thanks this.
  4. Aug 30, 2019 #3
    Ridgeline

    Ridgeline Road Train Member

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    Michigan
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    The gauge is more likely bad but if you bring it to the dealer and have them check the op, through the computer, they can tell you exactly whats wrong.

    By the way the op gauge operates through the ecm.
     
    Ridgeline, Aug 30, 2019
    Ridgeline, Aug 30, 2019
    #3
  6. Aug 30, 2019 #5
    krasnii

    krasnii Bobtail Member

    3
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    Jul 23, 2018
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    No.
     
    krasnii, Aug 30, 2019
    krasnii, Aug 30, 2019
    #5
  8. Aug 30, 2019 #5
    krasnii

    krasnii Bobtail Member

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    Jul 23, 2018
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    A volvo dealer mechanics told me there is another oil pressure sensor.
    I checked everywhere but it doesn't seems to exist.
     
    krasnii, Aug 30, 2019
    krasnii, Aug 30, 2019
    #5
  9. Aug 31, 2019 #6
    Jacoooooooo

    Jacoooooooo Heavy Load Member

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    Oct 20, 2013
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    I think when the engine beake actuator valve is broken pressure would go very high and stay like that. Altogh with the engine off there is no pressure to be shown on the guage. You either have some electrical issue or the cluster is malfunctioning.
     
    Jacoooooooo, Aug 31, 2019
    Jacoooooooo, Aug 31, 2019
    #6
  10. Sep 1, 2019 #7
    nasriza

    nasriza Road Train Member

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    Feb 1, 2013
    Chicago, IL
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    Oil pressure sensor is bad behind alternator on the block two sensors bottom one crankcase psi top oil psi replace both much easier cuz crankcase psi usually acts up and shuts truck down
     
    nasriza, Sep 1, 2019
    nasriza, Sep 1, 2019
    #7
    miszel Thanks this.
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