Fuel Temp/Boost wire

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Don2WS, Apr 7, 2010.

  1. rbht

    rbht Heavy Load Member

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    Jan 23, 2010
    CT,NH
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    The fuel wire was the best thing i ever did i can't believe the diffrence i pull the hill leaving my shop a gear higher and it gets up and go's way better, went to radio shack a pack of 5 150ohm 1/2 watt a buck what a deal.
     
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  3. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Jan 20, 2010
    Hesperia, Ca.
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    Do you splice into the fuel wire or just stick the ends of the resistor inside and tape both ends of the wire ? BTW, is it the fuel wire on top of the secondary filter or pump ? I have a 3406E early model (1994) EK series, is that a 2 or 3 three wire ? I don't have the truck here at home thats why Im asking.
     
  4. Jfaulk99

    Jfaulk99 Road Train Member

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    May 16, 2009
    Couch
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    Just stick the resistor in (if it's a 2 wire) I believe the 3 wire is more involved. It should be on the top of the secondary filter head but I have a C12 also and the sensor was mounted else where on it.
     
  5. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    I just a pack of resistors, in came in a 5 pak. My question now is they had 1/4 watt, 1/2 watt, 1 watt. Which one do I need ? I bought the 1/2 watt, 150-ohm, 5% tolerance is that the correct one and whats the difference in the wattage ?:biggrin_2556:
     
  6. haystack

    haystack Light Load Member

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    Feb 12, 2009
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    thats the one
     
  7. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    I Just found out I have a 3 wire fuel temp, I've seen in other threads how to use:biggrin_2558: a 2 wire BUT, I can't find anywhere in here how to use the resistor on a 3 wire fuel temp.
     
  8. rbht

    rbht Heavy Load Member

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    Jan 23, 2010
    CT,NH
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    It's on here i saw it i think it's in the Cat power harness thread.
     
  9. CMTrucking

    CMTrucking Light Load Member

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    Dec 25, 2009
    Kamloops, BC
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    The 1/2 ohm tells the ECM the fuel is at 165 deg. You can go as high as 194, although I'm not sure what resistor works. I had one before that set it at 188 but I dont know which resistor was used.

    The higher the # the better the gains.
     
  10. PaulE

    PaulE Medium Load Member

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    Jan 15, 2009
    Verona Wi
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    Cat ecm can adjust up to 158 degrees . there are no gains showing a temp higher than this.
     
  11. Sodapop

    Sodapop Light Load Member

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    Mar 19, 2010
    Blytheville,Ar
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    i put a 1/4 watt 120 ohmn on mine. will that be ok using a 1/4 watt or do i need the 1/2 watt resistor? I can definitly feel the differnce and I do have a mpg gain. C-15 55hp 6nz
     
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