No fuel pulse to injectors

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Myst69, Nov 18, 2022.

  1. Myst69

    Myst69 Bobtail Member

    8
    0
    Nov 18, 2022
    Pacific Northwest
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    I actually got the truck to fire up today but it was in limp mode (1900 cranking amps solved the starting issue) a code came on after it sat and idled for a few minutes it was DTC 327 SPN 110 FMI 2 which I guess is to power de-rate because of coolant temp?? This truck hasn’t been started in roughly 2 years and I do not think the coolant got over 155 degrees fahrenheit hmm?
     
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  3. Myst69

    Myst69 Bobtail Member

    8
    0
    Nov 18, 2022
    Pacific Northwest
    0
    Also, after letting the truck sit and cool off completely, NED was showing engine coolant temp at 85 degrees?? It’s in the low to mid 40’s here now???
     
  4. Raffito

    Raffito Light Load Member

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    Aug 25, 2019
    Conroe
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    You have to compare temperature with a mechanical gauge or with a infrared thermometer.
    What temperature does the ned shows when the engine light comes on? And if it’s getting hot need to inspect thermostat and fan operations.
     
    Myst69 Thanks this.
  5. Myst69

    Myst69 Bobtail Member

    8
    0
    Nov 18, 2022
    Pacific Northwest
    0
    After letting the truck sit in 43 degree temperature for multiple hours it shouldn’t be registering 85 in NED without cranking or starting though right? Unfortunately I do not have a thermometer I can use at the moment. I just thought it was a little strange that it went into temp related limp mode after running for 10 or so mins. Fan seems to be functioning normally when it was running.
     
  6. Inderjit

    Inderjit Medium Load Member

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    609
    Sep 17, 2017
    0
    Do the injectors do a buzz test when the key is turned on?
     
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