oil pressure gauge fluctuating

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  • #988719
    Bill Denton
    Bill Denton

    GM 4.3 150K miles.
    Oil pressure gauge is fluctuating.
    How likely is it the oil pressure sending unit?
    How likely is it the oil pump?

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  • Author
  • #988720
    Nightflyr *
    Richard Kirshy

    Please elaborate on your meaning of fluctuating.
    Do you mean the gauge is bouncing at any given rpm or are you seen a drastic drop in oil pressure once the engine is at operating temp ?

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