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02 Peterbilt 379 won't start.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by n1xrf, Apr 16, 2016.

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  1. Apr 16, 2016 #1
    n1xrf

    n1xrf Light Load Member

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    Jul 18, 2011
    somewhere in the USA
    0
    02 Peterbilt 378, with a 6nz cat. Ran great, pulled into the yard, driver said it had a bad battery. Had the parts changer change battery, now the truck won't start. Has plenty of fuel, primer is hard, filter is full. Have 12v power on ecm pin 70, with key on. Has constant 12v on 3 exam pins with key off. Still won't run. Any ideas?
     
    n1xrf, Apr 16, 2016
    n1xrf, Apr 16, 2016
    #1 + Quote Reply
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  3. Apr 16, 2016 #2
    baha

    baha Road Train Member

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    CK. to be sure ecm is still getting 12v, will it start for a short time on ether? the sensor L side ft.above air comp. will make E model not start and not throw a code,
     
    baha, Apr 16, 2016
    baha, Apr 16, 2016
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  4. Apr 16, 2016 #3
    TAfool

    TAfool Medium Load Member

    631
    847
    Dec 8, 2012
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    Cranks, won't start?
    or
    Won't crank?

    Check obvious first. Did all ground and power leads get reconnected?

    TA
     
    TAfool, Apr 16, 2016
    TAfool, Apr 16, 2016
    #3 + Quote Reply
  5. Apr 16, 2016 #4
    n1xrf

    n1xrf Light Load Member

    166
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    Jul 18, 2011
    somewhere in the USA
    0
    Cranks, but no start. All wires are hooked up properly. Will hit on ether.
     
    n1xrf, Apr 16, 2016
    n1xrf, Apr 16, 2016
    #4 + Quote Reply
  7. Apr 16, 2016 #5
    n1xrf

    n1xrf Light Load Member

    166
    32
    Jul 18, 2011
    somewhere in the USA
    0
    I forgot to mention, it also won't talk to my nexus iq scan tool. Can talk to abs and trailer abs modules.
     
    n1xrf, Apr 16, 2016
    n1xrf, Apr 16, 2016
    #5 + Quote Reply
  8. Apr 16, 2016 #6
    Old school 362

    Old school 362 Medium Load Member

    392
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    Mar 6, 2016
    Pensacola Fl
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    Check elm ground wire. Located next to battery box. Should be a white wire. My .o2
     
    Old school 362, Apr 16, 2016
    Old school 362, Apr 16, 2016
    #6 + Quote Reply
    n1xrf Thanks this.
  9. Apr 16, 2016 #7
    wore out

    wore out Numbered Classic

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    If it will not communicate with the nexius tgere is a power or ground wire off or in the wrong place on the battery cables. Hopefully a positive on a ground and not the other way around
     
    wore out, Apr 16, 2016
    wore out, Apr 16, 2016
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    n1xrf Thanks this.
  10. Apr 17, 2016 #8
    Old school 362

    Old school 362 Medium Load Member

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    Mar 6, 2016
    Pensacola Fl
    0
    Did you get it running
     
    Old school 362, Apr 17, 2016
    Old school 362, Apr 17, 2016
    #8 + Quote Reply
  11. Apr 17, 2016 #9
    n1xrf

    n1xrf Light Load Member

    166
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    Jul 18, 2011
    somewhere in the USA
    0
    Not yet.
     
    n1xrf, Apr 17, 2016
    n1xrf, Apr 17, 2016
    #9 + Quote Reply
  12. Apr 17, 2016 #10
    Old school 362

    Old school 362 Medium Load Member

    392
    249
    Mar 6, 2016
    Pensacola Fl
    0
    Hace u checked fuel pump for pressure.
     
    Old school 362, Apr 17, 2016
    Old school 362, Apr 17, 2016
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13 more messages...
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