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  1. #1
    Sr. Apprentice
    Join Date
    Oct 2009
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    Elmhurst IL
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    Default bad Oil pressure gauge?

    I just bought a 1988 GMC sierra Classic 3500 dually 3+3 sequoia Camper Special. Its got 91,000 original on it. The truck has 91,000 miles on it and while the truck is running the oil pressure gauge sits at 60 when the motor is cold when it warms up it will flicker between 35psi and 60. and will do it all the time. Is it just a bad gauge or something else?
    1988 GMC Sierra Classic 3500 Dually.

  2. #2

    Default

    my 2010 does the exact same thing.

  3. #3
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
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    8,198
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    Default

    Most likely the sending unit is bad and once warm sending an improper signal.
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

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