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  1. wlwarnke

    83 C10 oil pressure gauge not working

    Two 91ohm resistors in parallel would be 45.5ohm That’s 45.5psi 3 would be 91/3, etc. 30.3 psi
  2. wlwarnke

    83 C10 oil pressure gauge not working

    It’s hard to say. Since lifting wire pegs gauge, you probably don’t have a grounded wire (atleast not a direct short). Since grounding wire reads zero it’s def not open wire. If you have a way to simulate pressure (compressor, regulator, good gauge) remove sensor from truck, connect to...
  3. wlwarnke

    83 C10 oil pressure gauge not working

    Have resistors, or a potentiometer, or a decade box? Check the calibration of the gauge. Connect the sensor to you compressor regulator (1/8” npt) and confirm both gauge and sensor are accurate. Every “good” sensor I’ve tested has been pretty damn accurate. Gauges however are never linear...
  4. wlwarnke

    83 C10 oil pressure gauge not working

    Does gauge move at all? Key off, key on engine off, etc? These sensors are 0-60ohms = 0-60psi That’s ohms to ground. Lift sensor wire, should peg gauge high. Short sensor wire to ground, should read zero. If no deflection, remove gauge from cluster and bench test. I can’t recall if the...
  5. wlwarnke

    What have you done to your square lately??

    Launch Boats
  6. wlwarnke

    Timing vs. harmonic balancer?

    I’ve actually had a balancer slip or the owner installed the wrong balancer. Weren’t some of them keyed differently? To confirm, I’ve stuck a zip tie or small Allen key down #1 spark plug hole so that the piston would push it up. Then crank (manually), when the piston reach TDC (approximate...
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