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cold air temp driveability

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bigswede, Mar 5, 2009.

  1. Mar 5, 2009 #1
    bigswede

    bigswede Light Load Member

    50
    1
    Dec 6, 2008
    0
    have a mxs acert when really cold truck seems to really loose mpg,anybody have any ideas,have winter front on and truck warms up good,when gets above thirty again its seems to come around,could I have a faulty fuel temp,or atmospheric pressure sensor not reading right signals,friend has same series motor with almost identical everything and has no loss,any help is appreciated
     
    bigswede, Mar 5, 2009
    bigswede, Mar 5, 2009
    #1
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  3. Mar 6, 2009 #2
    pullingtrucker

    pullingtrucker Road Train Member

    1,185
    598
    Dec 21, 2008
    Fostoria, Ohio
    0
    I have the same problem with my motor. The problem is that the MXS and almost all ACERT CAT motors like the warmer air. Think about this you have cold air temp (say 20 degrees) and then the air is sent through the CAC...what happens, the air is chilled even more. This situation happens to many of the ACERTs depending on the ecm programing. I was gonna try a winterfront, but never got around to it this past winter. This problem happened in the early days of trucking when the OEM's were just starting to use CAC. If ya have any doubts about this call Bruce out at Diesel Injection of Pittsburgh.
     
    pullingtrucker, Mar 6, 2009
    pullingtrucker, Mar 6, 2009
    #2
  4. Mar 6, 2009 #3
    05chopper

    05chopper Light Load Member

    169
    22
    Dec 25, 2008
    USA
    0
    If all your maintenance is ok then I would be checking for codes pulled from your ECM! Are you loading up on fuel conditioner for cold weather?This has some effect to your mpg
     
    05chopper, Mar 6, 2009
    05chopper, Mar 6, 2009
    #3
  5. Mar 6, 2009 #4
    bigswede

    bigswede Light Load Member

    50
    1
    Dec 6, 2008
    0
    ur are right going to try buttoning up the front end when really cold
     
    bigswede, Mar 6, 2009
    bigswede, Mar 6, 2009
    #4
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