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  1. #1

    Default oil pressure problems again...

    so i had gone through hell getting that new oil sending unit in my truck and now its dropping to zero as i accelerate, i know my oil pressure is good usually at 60 but it drops down to zero every once in awhile any ideas?

    2000 Chevy Silverado 2500 4x4

    6.0L v8:great: 4L80E

    2.5 in Daystar leveling keys

    285/75/16s BFG ATs on HD wheels

    Cab lights and tool box

  2. #2


    Did you use a mechanical gauge to check and verify the pressure?
    A mechanical gauge is about the only way to accurately verify the pressure readings.
    As for the pressure drop if it isnt the gauge/sending unit or wiring then you may have to look at the oil bypass, it's possible under heavy load it's bypassing and causing a momentary loss of pressure.

  3. #3
    murdog94's Avatar
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    Feb 2008
    Cloquet, Minnesota, United States
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    I agree with TBplus but i have also run into faulty parts right off the shelf.. When i was running for Rangers i went thru 4 IACs in 3 months and they were aftermarket parts. And I had one chevy that went thru 3 Fuel pumps in one year, once again obviously not as quality as you would think.. Just something else to look at.


    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!!!!"

  4. #4


    alright thank you i will definitely look into a mechanical oil pressure gauge

  5. #5


    so if i get a mechanical oil pressure and its doin the same as my stock oil pressure gauge you think its most likely bypassing? i saw a diagram on it, is it bad that it is bypassing or should i not worry about it, because im all for doing preventative maintenance cuz i love my truck

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