Page 1 of 3 123 LastLast
Results 1 to 10 of 22

Thread: oil pressure pid

  1. #1
    Member
    Join Date
    Apr 2007
    Posts
    66

    Default oil pressure pid

    Is there an oil pressure pid or am i missing it? I see one for engine oil life but not oil pressure. If there isn't one how do you go about creating a custom pid for a specific sensor that isn't supported?

    ..RJ..

  2. #2
    EFILive Reseller kbracing96's Avatar
    Join Date
    Sep 2005
    Posts
    584

    Default

    I don't believe the PCM monitors oil pressure, it goes strait from the sending unit to the dash cluster.
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo


  3. #3
    Member
    Join Date
    Apr 2007
    Posts
    66

    Default

    I think that the pcm uses the info from the oil sending unit in it calibrations at some point in time due to the B1501 calibration. Also not that it really pertains to efi live but you can monitor it on a snap-on modis and it is an option in hptuners

  4. #4
    New Member
    Join Date
    Jan 2007
    Posts
    6

    Default

    Maybe it's not available on all controllers, but I have a 'GM.ENGOILP' PID in the 'Conditions' section. Is that what you're looking for?

  5. #5
    EFILive Reseller kbracing96's Avatar
    Join Date
    Sep 2005
    Posts
    584

    Default

    Humm... Maybe it's just not broadcasting in all PCMs. I know my Interceptor Scangauge has a oil pressure gauge, but it doesn't read anything on my truck
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo


  6. #6
    EFILive Developer Site Admin Blacky's Avatar
    Join Date
    Mar 2003
    Posts
    9,490

    Default

    Quote Originally Posted by wadesns
    Is there an oil pressure pid or am i missing it? I see one for engine oil life but not oil pressure. If there isn't one how do you go about creating a custom pid for a specific sensor that isn't supported?

    ..RJ..
    If you're refering to an LS1...

    Some LS1's PCMs support the oil pressure PID some don't. The Covettes and Commodores do have it, the Camaro/TA does not. Their oil pressure sender goes direct to the cluster and not via the PCM.

    Regards
    Paul
    Before asking for help, please read this.

  7. #7
    Member
    Join Date
    Apr 2007
    Posts
    66

    Default

    Yes it is on a 00 f-body(LS1) So does that mean that the B1501 calibration is not valid even thogh it is an option in the tune? Also what exactly happens when the pcm flags the low oil pressure if the pressure is lower then the chosen pressure for the time in B1502?

    ..RJ..

  8. #8
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    On F-body, oil pressure sender drives the gauge directly...

    See attached diagram (B is switched power, A is ground)...
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IPC.png 
Views:	344 
Size:	167.1 KB 
ID:	1714  

  9. #9
    Member
    Join Date
    Apr 2007
    Posts
    66

    Default

    It isn't that i doubt that it runs from the guage directly to the sending unit. My confusion is why is there a calibration in the 2000 model OS that is dependent on a oil pressure that doesn't run through the pcm? If it goes directly to the Instrument cluster then how is the pressure determined? Also what exactly happens if the pcm sees a pressure lower then the calibration?

  10. #10
    EFILive Developer Site Admin Blacky's Avatar
    Join Date
    Mar 2003
    Posts
    9,490

    Default

    Quote Originally Posted by wadesns
    It isn't that i doubt that it runs from the guage directly to the sending unit. My confusion is why is there a calibration in the 2000 model OS that is dependent on a oil pressure that doesn't run through the pcm? If it goes directly to the Instrument cluster then how is the pressure determined? Also what exactly happens if the pcm sees a pressure lower then the calibration?
    The oil pressure based calibrations show up because the same PCM and same operating system is used on vehicles with and without oil pressure data input.

    On vehicles such as the F-body that have no oil pressure input, the PCM will use either a default oil pressure value (that is always in range), or the test results based on those calibrations will be ignored completely.

    Regards
    Paul
    Before asking for help, please read this.

Page 1 of 3 123 LastLast

Similar Threads

  1. T42 Pressure's
    By GAMEOVER in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 25
    Last Post: April 14th, 2009, 04:23 PM
  2. oil pressure pid
    By HINDZY in forum Gen III V8 Specific
    Replies: 1
    Last Post: May 17th, 2008, 12:59 PM
  3. 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
  4. Fan A/C Pressure
    By mtnman in forum General (Petrol, Gas, Ethanol)
    Replies: 22
    Last Post: February 8th, 2007, 09:19 AM
  5. High Oil pressure
    By Josho in forum General (Petrol, Gas, Ethanol)
    Replies: 7
    Last Post: December 27th, 2006, 07:11 PM

Posting Permissions

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