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00 Civic Heater Blows Cold Air

Discussion in 'Civic and del Sol - EG and EK' started by pkennedy, Nov 21, 2007.

  1. pkennedy

    pkennedy New Member

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    Pittsburgh PA
    I believed I tried everything and the heater still blows cold air. Here's what I did so far.
    1) Made sure the heater controller moved the heater valve open and close positions. That was working.
    2) Checked thermostat is was working. Replaced with a new 1 any way.
    3)Disconnected the heater core inlet and outlet hoses and connected a water hose directly to the heater inlet. Turned on water to see if the core had a blockage. Water was coming out the outlet hose.
    4) Bled radiator.
    I did a H22 swap a year ago I had this prolem with the old engine too. Need help winter is coming fast I need heat.
     
  2. norcalgsr

    norcalgsr Honda Master Technician

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    Hmm.. are both the inlet & outlet hoses on the heater core hot when the engine is running and the heater valve is open?
     
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