Repaired Heater core, now the xterra only blows hot air

Neogixxer Jan 5, 2017

  1. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Hey guys/gals
    So after a freezing snowboarding trip up in Utah (driving on the temp, it read -5) I finally decided to fix my heater core. Those whom have done the job no how fun it is to do.
    Anyways now it only blowing hot air, is it possible I have one of the (2) hoses backwards going into the firewall into the heater core? Any ideas?
     
  2. Muadeeb

    Muadeeb Bastard Admin from Hell Admin

    Messages:
    15,647
    Location:
    Dallas
    No, heater core only deals with hot air, cold air comes from the evap core behind the glove box. Check that you have your AC controls hooked up because it sounds like the blend door (above heater core) is stuck in the 'fires of hell' position.
     
  3. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Is the door in the Evap core its self? Plus forgot to mention. I had to let the Freon out when I pulled the unit out
     
  4. Muadeeb

    Muadeeb Bastard Admin from Hell Admin

    Messages:
    15,647
    Location:
    Dallas
    That could be a problem. Did you pull vacuum and recharge?

    Sent from the 4th circle via directionally confused otters
     
  5. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Ya because when I pulled the evap core to get to the heater core, I unhooked the AC lines losing the vacuum an recharge.
     
  6. Prime

    Prime Some Kind of In Charge? Admin

    Messages:
    33,559
    Location:
    Suffolk, VA
    It sounds like the cable that controls your blend door isn't connected. Is there resistance when you turn the temperature knob? Or does it just flop from hot to cold?
     
  7. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    It doesn't feel loose or floppy, an as I turn the knob I can hear the blend door I assume opening an closing. Well sounds like
    Something is opening an shutting, not sure if it's the doors
     

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