Freightliner classic no heat

Discussion in 'Freightliner Forum' started by Zeeny, Oct 24, 2014.

  1. Zeeny

    Zeeny Light Load Member

    54
    1
    Nov 16, 2013
    0
    Hi was wondering if someone can help me out with this,I have a 2000 classic detroit 12.7 and at idle there's no heat at idle,the gauge reads good if it's cold out it's at about 150.when your going down the road it gets a lot of heat,the valves that are by the oil cooler are open truck used to have great heat I don't know what happen,some advice would be greatly appreciated
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Freightlinerbob

    Freightlinerbob Road Train Member

    2,234
    1,315
    Jan 15, 2012
    West Coast B.C.
    0
    If you have heat while moving it's because air is flowing naturally through the cabin air intake.

    Does the blower fan work?
     
  4. Zeeny

    Zeeny Light Load Member

    54
    1
    Nov 16, 2013
    0
    Yes it does
     
  5. Freightlinerbob

    Freightlinerbob Road Train Member

    2,234
    1,315
    Jan 15, 2012
    West Coast B.C.
    0
    Blows but no air comes out?

    Or blows but cold air comes out?
     
  6. Zeeny

    Zeeny Light Load Member

    54
    1
    Nov 16, 2013
    0
    Blows with cold air coming out
     
  7. Freightlinerbob

    Freightlinerbob Road Train Member

    2,234
    1,315
    Jan 15, 2012
    West Coast B.C.
    0
    The hot air you feel while moving, is it less volume (not temp) than it used to be? Or just as much as before?
     
  8. Zeeny

    Zeeny Light Load Member

    54
    1
    Nov 16, 2013
    0
    Pretty much the same
     
  9. Freightlinerbob

    Freightlinerbob Road Train Member

    2,234
    1,315
    Jan 15, 2012
    West Coast B.C.
    0
    I think the door that controls the hot/ cold air at the heater core is not being controlled properly. Either your dashboard knob is no longer controlling the flap or the air cylinder at the flap is not responding or the flap is stuck.
     
    datfire Thanks this.
  10. xsetra

    xsetra Road Train Member

    4,908
    6,539
    Aug 21, 2011
    0
    could your thermostat be failing. That allows your coolant to circulate before it is heated up at idle. But while running your coolant heats.
     
  11. Zeeny

    Zeeny Light Load Member

    54
    1
    Nov 16, 2013
    0
    How can I check it out
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.