Question about 2004 Honda Odyssey

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A/C has stopped cooling

A/C is blowing warm air. In the past 12 months, I have the A/C system inspected twice by 2 different shops. Combined, the shops have repaired a small leak and recharged the system. It's been running well for 12 months. Any assistance would greatly appreciated.

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  • Ron Tanner Jan 04, 2015

    Ok....Got another related scenario before I take it to the A/C/heating repair shop. For about a month, whether the heat was on OR not, the vents blew HOT air BY THEMSELVES. Again...the HEAT was on or off... Then, all of SUDDEN, it started working normally. No more HOT air UNLESS I turn the heat ON. Could I have a faulty thermostat that is causing the HEAT and A/C systems to not work improperly?

  • Csquared Cole Jan 04, 2015

    That is the heater control switch that is the issue. Have you noticed a change in the knob when you turn it?

  • Csquared Cole Jan 04, 2015

    The switch has a cable that controls teh valve underneath the hood. If you would like to repair it yourself let me know and I can help visually guide you through this.

  • Csquared Cole Jan 04, 2015

    The* I am glad you asked this because it really helps to narrow down your issue.

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You still have a leak. Try injecting some Dye in the system so you can find where the leak is coming from. That is the best course of action for you at this moment.

Posted on Dec 05, 2014

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  • Csquared Cole Jan 04, 2015

    That would be the heater control unit which is the unit that selects the heat and AC. Great question you have just narrowed down your problem. The switch behind the dash has a lever that controls the valve under the hood. That is more than likely broken. Is the heater knob limp when you turn it? Any change that you can think of with the selector since you have purchased the car? I actually can walk you through the repair if you would like to save some money and perform this yourself. Let me know and we can communicate personally.

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