Results 1 to 6 of 6

Thread: Oil Pressure Sensor

  1. #1
    Junior Member
    Join Date
    Jun 2006
    Posts
    33

    Question Oil Pressure Sensor

    I know there is an oil pressure sensor for the instrument panel gauge. I'm trying to check my oil pressure and was hoping I could just put my DMM on the sensor leads. Does anyone know what resistance correlates to what pressure? ie: calibration factor?

    thanks,
    Tom
    Tom

    1987 RX7 with 2000 LS1 - T56 Transplant
    Full Time Engineer, Part Time Gear Head
    http://www.badassperformance.com

  2. #2
    EFILive Developer Site Admin Blacky's Avatar
    Join Date
    Mar 2003
    Posts
    9,490

    Default

    This formula was calculated from observed data only, it is not from any authorised published data sheet on the oil sender. It is close but may not be 100% accurate. The voltage (V) in the equation is the voltage measured at the PCM.

    psi = (V*32)-16


    Regards
    Paul
    Before asking for help, please read this.

  3. #3
    Lifetime Member emarkay's Avatar
    Join Date
    Apr 2003
    Posts
    481

    Default

    Page 8-567 of the 2K manual shows:
    0 ohms is "low", 40 ohms is 30PSI, and 100 ohms is "high",
    (Does this sound like GM or what?)
    when fed to the analog gauge, so I would presume that those resistances are what the sensor is indicating.
    Early EFILive V5 user - Upgraded from AutoTap for DOS!
    2000 Chevrolet Camaro Z28, A4 - For occasional day trips...
    1984 Chevrolet Caprice Classic - For the family...
    1989 Honda VTR250 - For me and me only...

  4. #4
    Junior Member
    Join Date
    Jun 2006
    Posts
    33

    Default

    I've been reading through alldata and have not found much information on the sensor. I know there is one on the driver side behind the intake manifold. It is refered to as the "pressure switch," "pressure sensor," and "pressure sender" and I'm under the impression the PCM uses it to disable the fuel pump if the engine is not running. EFilive will not log it. So I'm going to put my meter on it and measure the voltage. Or disconnect it and measure the ohms. Does this sound like the right thing to do?

    thanks,
    Tom
    Tom

    1987 RX7 with 2000 LS1 - T56 Transplant
    Full Time Engineer, Part Time Gear Head
    http://www.badassperformance.com

  5. #5
    Lifetime Member emarkay's Avatar
    Join Date
    Apr 2003
    Posts
    481

    Default

    The LS1 Camaro/Firebird do NOT have an oil pressire input the PCM.
    Early EFILive V5 user - Upgraded from AutoTap for DOS!
    2000 Chevrolet Camaro Z28, A4 - For occasional day trips...
    1984 Chevrolet Caprice Classic - For the family...
    1989 Honda VTR250 - For me and me only...

  6. #6
    Junior Member
    Join Date
    Jun 2006
    Posts
    33

    Default

    Ok, so all data says the sensor will have a 4 pin connector with a signal, ground and two unused spaces. When I pulled the connector off, there was only one pin. Alldata has been very vague and shows the same part on the back as both the "sensor" and "switch." Maybe I will just take the thing out and replace it with a gauge.
    Tom

    1987 RX7 with 2000 LS1 - T56 Transplant
    Full Time Engineer, Part Time Gear Head
    http://www.badassperformance.com

Similar Threads

  1. Log fuel pressure with Autometer sensor?
    By samh_08 in forum General (Petrol, Gas, Ethanol)
    Replies: 71
    Last Post: April 12th, 2010, 03:51 AM
  2. Oil Pressure Sensor?
    By DrX in forum Gen III V8 Specific
    Replies: 0
    Last Post: August 17th, 2009, 07:47 AM
  3. Fuel pressure sensor scaling for LMM/LBZ
    By DuramaxPowered in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 2
    Last Post: March 4th, 2009, 10:21 AM
  4. Setting up a drive pressure sensor using V2 interface?
    By DuramaxPowered in forum General
    Replies: 1
    Last Post: November 17th, 2008, 04:54 PM
  5. LOW FUEL PRESSURE logging for low fuel pressure nirtous systems
    By WiseGuyZ06 in forum External A/D inputs
    Replies: 4
    Last Post: October 11th, 2007, 11:56 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •