Question about 1996 Honda Accord

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The heater control knob will not turn all the way to either hot (right) or cold (left) so therefore I only get medium warm or medium cold. I assume the knob moves a cable but I cannot see it or remove the panel around the knob,,,, help

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  • Honda Master
  • 8,984 Answers

Cable is probably kinked or slipped adjustment. There are 2 cables connected to the knob. One move the blend door in the heater box to make the air flow thru the heater core, and the other cable opens a valve in the heater hose (engine compartment) to let the hot engine water into the heater core. Check both cables for kinks and fix and kinks. It is still doesn't work, first disconnect both cables at the blend door and valve and check the door and the valve for proper operation (can you open and close them by hand?--if not, these must be repaired or replaced), then, if good, adjust the cables according to this procedure from autozone.com:


CONTROL CABLE Adjustment

  1. Under the hood, open the clamp and disconnect the heater control valve cable from the arm.
  2. Under the dash, detach the air mix control cable from the clamp. Pull the cable from the control arm.
  3. Position the temperature control at MAX COOL.
  4. Turn the air mix control arm counterclockwise until it stops.
  5. Attach the air mix control cable to the arm.
  6. Snap the air mix cable hook into the cable clamp.
  7. Under the hood, turn the control valve to the fully closed position.
  8. Install the heater valve cable to the arm.
  9. Gently pull on the cable housing to remove any slack.
  10. Insert the cable into the clamp.

Posted on Oct 20, 2010

  • 1 more comment 
  • nayankapadia Jun 19, 2011

    I did all this than I bought new cables thinking the guy before had replaced it with wrong ones or something but that wasn't the case. The cable that connects to the heater control was about .500" to .750" too short so now I will make my own. So many people having problems with the air mix cables I don't understand why they have 2 cables connected to the same thing, one lines up but the other doesn't. There is no room for slack. By the way I replaced the heater core and evaporator on the car trying to adjust this cable has been a problem. 1995 honda accord v6.

  • Jeffrey Turcotte
    Jeffrey Turcotte Jun 19, 2011

    I believe the second cable operates the valve in the engine compartment. Sometimes that valve gets rusty and sticks. Take the valve cable loose to see if the door will operate properly when the valve is not connected. If it will, you will need to repair or replace the valve so that it operates properly.



  • nayan_kapadi Sep 12, 2011

    I understand what you are saying, the valve is operating properly, nice and smooth the cable I bought is a little short from the dealer so I had to make my own for the one that goes into the engine compartment onto the valve. I got it somewhat to work but I have to manually give the blender door underneath the glove compartment a little push. I wish I could show you the problem. I didn't even know you had replied, thank you very much for that. appreciated.

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