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Pete 379 tach switches

Discussion in 'Peterbilt Forum' started by Juicehauler, Mar 2, 2018.

  1. Mar 2, 2018 #1
    Juicehauler

    Juicehauler Light Load Member

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    Dec 17, 2013
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    Does anyone have the switch settings for a tach in a 01 379 with a cat 3406e? Seems to be reading a couple hundred rpm high at cruising speed, don’t have access to a service tool to confirm actual rpm would like to at least get it close
     
    Juicehauler, Mar 2, 2018
    Juicehauler, Mar 2, 2018
    #1
    Oxbow and blairandgretchen Thank this.
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  3. Mar 2, 2018 #2
    blairandgretchen

    blairandgretchen Road Train Member

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    South west Missouri
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    Yes - I’m having terrible trouble with a 1995 379 - Detroit - I bought a new tach - have the flywheel tooth chart in the truck, can get it in the am for you.

    Mine is still no go.
     
    blairandgretchen, Mar 2, 2018
    blairandgretchen, Mar 2, 2018
    #2
    Oxbow Thanks this.
  4. Mar 2, 2018 #3
    Juicehauler

    Juicehauler Light Load Member

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    Dec 17, 2013
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    ok... might not be they same, mine gets signal from ecm, not from the flywheel
     
    Juicehauler, Mar 2, 2018
    Juicehauler, Mar 2, 2018
    #3
    Oxbow and blairandgretchen Thank this.
  5. Mar 2, 2018 #4
    blairandgretchen

    blairandgretchen Road Train Member

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    South west Missouri
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    On my new guage it said ‘if it’s an electronic engine, set 5 and 6 to ON, rest to off’

    The old guage settings won’t work either for 118 tooth flywheel.

    Do you have a scan guage by any chance? Mine reads perfectly, but dash guage reads from VSS sensor on flywheel.
     
    blairandgretchen, Mar 2, 2018
    blairandgretchen, Mar 2, 2018
    #4
    Oxbow Thanks this.
  6. Mar 2, 2018 #6
    Juicehauler

    Juicehauler Light Load Member

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    Dec 17, 2013
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    I tried the 5 and 6, had another tach laying around that was set to that, just jumped it right to 3k, I have cat et but my cat com adapter is screwed.
     
    Juicehauler, Mar 2, 2018
    Juicehauler, Mar 2, 2018
    #6
    Oxbow Thanks this.
  7. Mar 2, 2018 #6
    blairandgretchen

    blairandgretchen Road Train Member

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    South west Missouri
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    Well bugger.

    @pushbroom just gave me a handy hint for mine, see if he sees this one.
     
    blairandgretchen, Mar 2, 2018
    blairandgretchen, Mar 2, 2018
    #6
    Oxbow Thanks this.
  8. Mar 2, 2018 #7
    blairandgretchen

    blairandgretchen Road Train Member

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    South west Missouri
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    I’ll get out to the shop tomorrow and shoot a pic of the calibration instructions for this one just in case it helps.

    Hate having stuff not working.
     
    blairandgretchen, Mar 2, 2018
    blairandgretchen, Mar 2, 2018
    #7
    Oxbow Thanks this.
  9. Mar 3, 2018 #8
    pushbroom

    pushbroom Road Train Member

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    Sep 1, 2012
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    Calibration for a 900 series Amtek tach attached. What are the current settings? S/n of truck?
     

    Attached Files:

    pushbroom, Mar 3, 2018
    pushbroom, Mar 3, 2018
    #8
    E model Cat man, blairandgretchen and Oxbow Thank this.
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