6nz caterpillar smokes at higher altitudes.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by shawn1972, Jul 14, 2014.

  1. shawn1972

    shawn1972 Light Load Member

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    Mar 23, 2014
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    It cleans up as boost builds. at close to sea level it barely smokes when taking off and shifting gears. at 4-5000 ft its pretty black.
     
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  3. beltrans

    beltrans Medium Load Member

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    Nov 26, 2008
    spokane wa
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    Atmospheric pressure sensor...
     
  4. shawn1972

    shawn1972 Light Load Member

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    Mar 23, 2014
    Madera Ranchos, CA
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    so the atmospheric pressure sensor can go bad without throwing any codes?
     
  5. wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    Usually sensors only throw codes when they have a voltage or ground issue. If they are just reading wrong to begin with but within specs of the system no codes, good way to see things like that is in the data list on then scan tool being used
     
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