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Thread: Park/Nuetral pcm change for single pin input?

  1. #1
    Fuel Injected! babywag's Avatar
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    Park/Nuetral pcm change for single pin input?

    So reading lt1swap.com...notation for '99-'02 wiring.

    "PCM can be programmed to accept a SINGLE WIRE park/neutral signal on this PIN, if no trans mounted range sensor is present"

    pin is Blue 34...

    Can this be done w/ EFI Live? Found some references online, but some say it can't be done unless you have HP Tuners or Tuner CATS?

    Working on another harness for someone, and they're going to be running a TH400.


    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  2. #2
    RIP EagleMark's Avatar
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    Looks like Yes in TunerCat OBDII. Constants, System Parameters, Gear Indicator 0,1,2 and 0 being none, 1 being PRNDL, 2 being P/N.

    See nothing of the sort in EFI Live.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
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  3. #3
    Fuel Injected! Lextech's Avatar
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    Babywag---What software do you have? Maybe I can help. I have EFILive and Tunercat.

    Jeff
    98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.

  4. #4
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    Quote Originally Posted by babywag View Post
    So reading lt1swap.com...notation for '99-'02 wiring.

    "PCM can be programmed to accept a SINGLE WIRE park/neutral signal on this PIN, if no trans mounted range sensor is present"

    pin is Blue 34...
    The tune may be configured as both EagleMark and Lextech have stated - settings are PRNDL, P/N, or None. With a TH400 you are better off running a manual tune. If you are somehow married to an auto tune, then setting the tune to "None" may be the easiest route.

    Quote Originally Posted by babywag View Post
    Can this be done w/ EFI Live? Found some references online, but some say it can't be done unless you have HP Tuners or Tuner CATS?
    It can be done with EFILive if the user has written a custom CAX file. Post your EFILive tune file if you want - I can make the necessary changes.

    Quote Originally Posted by babywag View Post
    Working on another harness for someone, and they're going to be running a TH400.
    As stated above, your best bet with a TH400 is to run a tune from a manual transmission vehicle. A tune from an automatic vehicle can be used - just more work to reconfigure it.
    Last edited by Buzz; 02-18-2014 at 03:30 AM.

  5. #5
    Fuel Injected! babywag's Avatar
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    Mainly just curious why EFI Live didn't have it.
    No pcm yet, but he'll likely go w/ whatever I tell him.
    The harness is '99-'02 style DBC, and for a pcm probably just start w/ 12212156 os w/ manual segment then?
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  6. #6
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    Quote Originally Posted by EagleMark View Post
    Looks like Yes in TunerCat OBDII. Constants, System Parameters, Gear Indicator 0,1,2 and 0 being none, 1 being PRNDL, 2 being P/N.

    See nothing of the sort in EFI Live.
    interesting, so I should probably change that parameter on my V6 bin edited for a 5 speed instead of an auto, the clutch anticipate switch is wired into the same pin on 5 speed firebird applications I based my bin off of.

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