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N14 No Start

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OldRed98, Oct 28, 2024.

  1. Oct 28, 2024 #1
    OldRed98

    OldRed98 Light Load Member

    298
    247
    Apr 18, 2017
    Colorado
    0
    Hello,

    I have a 98 W900 with an N14 525 HP red top. It sat for a few weeks and now it wont start. It just cranks and cranks.

    When I turn the key to the on position I'm not hearing any clicks. Usually the truck does a clicking sequence. I'm assuming this is the fuel shutoff solenoid. I wanted to check on here before I buy a fuel shut off solenoid. Not sure why it would just randomly stop working.
     
    OldRed98, Oct 28, 2024
    OldRed98, Oct 28, 2024
    #1
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  3. Oct 28, 2024 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

    5,139
    25,322
    May 2, 2021
    0
    Sounds like you've lost ignition power to the ECM. Check ignition fuses in the fuse box, especially if it's rained.


    Without ignition power, your ABS modulators also don't click, fuel solenoid doesn't get 12V.
     
    Big Road Skateboard, Oct 28, 2024
    Big Road Skateboard, Oct 28, 2024
    #2
    Rideandrepair Thanks this.
  4. Oct 28, 2024 #3
    DUNE-T

    DUNE-T Road Train Member

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    May 10, 2015
    Detroit, MI
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    In my case it was harness problem that goes from batteries to the main harness and it connects behind the engine
     
    DUNE-T, Oct 28, 2024
    DUNE-T, Oct 28, 2024
    #3
    Rideandrepair Thanks this.
  5. Oct 28, 2024 #4
    SmallPackage

    SmallPackage Road Train Member

    5,039
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    Dec 20, 2019
    Marion Texas
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    Does that model N14 have a thumb screw on the pressure head the solenoid is mounted too. If it does. Turn that screw in to bypass the need for 12v and manually open the fuel shutdown disk. See if it gets fuel and starts. Then you know the electric solenoid is bad or power to it.
     
    SmallPackage, Oct 28, 2024
    SmallPackage, Oct 28, 2024
    #4
    Rideandrepair Thanks this.
  7. Oct 28, 2024 #5
    062

    062 Road Train Member

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    Oct 20, 2013
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    I think it has some relays in the battery box also.
     
    062, Oct 28, 2024
    062, Oct 28, 2024
    #5
    Rideandrepair Thanks this.
  8. Oct 28, 2024 #6
    YardMule89

    YardMule89 Road Train Member

    1,977
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    Feb 26, 2021
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    Do the CEL & SEL cycle when you turn key on?
     
    YardMule89, Oct 28, 2024
    YardMule89, Oct 28, 2024
    #6
    Rideandrepair and Heavyd Thank this.
  9. Oct 28, 2024 #7
    wore out

    wore out Numbered Classic

    14,942
    180,428
    Jun 5, 2013
    CHASIN THE DEVIL'S HERD
    0
    Tighten the battery cables. I know it cranks and cranks and tighten the cables sounds dumb as hell. But indulge me….I’ve seen it it time and again x 10 on some late 90’s T800’s with 365 red tops. When you hit start button the ECM loses power and she won’t hit a lick
     
    wore out, Oct 28, 2024
    wore out, Oct 28, 2024
    #7
    Rideandrepair, Oldman83 and blairandgretchen Thank this.
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