Terrastar Electrical fault

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bscar0, Oct 1, 2020.

  1. Heavyd

    Heavyd Road Train Member

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    Great to hear! Thank you for telling us what you found!
     
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  3. bscar0

    bscar0 Bobtail Member

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    Oct 1, 2020
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    unfortunate update: I received the terminating resistor in the mail and installed it where it was missing in the datalink. my cluster is working again like it should. the shift lock solenoid is releasing like it should and the truck will now go through all the gears while driving.... kinda. i got about 5 miles down the road and the speedometer went to 6 oclock and the bus went into limp mode. i turned around and headed back to the house and started hearing a hissing sound when i accelerate and almost seemed like my turbo was surging. also my dash display reads "water in fuel". when i got back home i pulled the codes using the cruise control buttons and i have 3 active codes.

    SPN 173 FMI 3 SA 0
    SPN 4192 FMI 31 SA 0
    SPN 3984 FMI 2 SA 33

    oh and when i first started the bus after installing the new resistor the cruise control kept trying to set itself within a few seconds after turning the key before i even put it in gear. any ideas?
     
  4. Inderjit

    Inderjit Heavy Load Member

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    Sep 17, 2017
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    I would have a look at the turbo plumbing as the hiss is probably a leak most likely from one of the hoses which is causing the power loss. My password for Navistars site expired and I can't reset from home so I can't tell you what the faults are.
     
  5. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    4192 is the water in fuel
    173-3 is exhaust gas temp out of range high.
    We never use the cluster to get codes. It really isn't mean to be used. The speedo signal is processed and sent over the datalink from the transmission, so that should be checked.
     
    spsauerland Thanks this.
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