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Thread: Oil Pressure Sender Ohm Range

  1. #1
    Join Date
    May 2002
    Location
    Anaheim Hills, CA
    Posts
    1,209
    My Cars
    04 330iZHP, 05 325iT

    Oil Pressure Sender Ohm Range

    VDO gauges use senders with US spec (240-33) or VDO propriatery spec (10-180). I know that E34 M5 oil temp senders work with VDO gauges. I would also like to use a M5 oil pressure sender (because it's alot smaller than the VDO sender). Does anyone know if they use the US or VDO spec ohm range?

    I tried the M5 pressure sender with a VDO gauge from BMP, but it didn't work. Maybe I need to get a US spec gauge?

  2. #2
    Join Date
    Nov 2002
    Location
    So.California
    Posts
    19,642
    My Cars
    1995 M3
    Do you mean by not work that the indicator doesn't move or is pegged?

    If the latter case, you could measure the current to the guage from the sender and use E=IR to determine which resistor you can use in series to get the range to match. Probably trial and error, but you need only to find where the pointer zeros assuming that when idle (engine off and ignition in position 1 or 2), that it sits below zero.

    Just trying to help, but I imagine you've already thought of this.



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