Honda Car Forum

just replaced the Blowing motor on my car and now the ac blows but only hot air. ac control panel is also brand new. my dad(who is a very good and expiereced body man thinks it has something to do with the heater control box...?) any ideas? ac is charged....

Check for any vacuum lines that might have opened.

The same happened to me.After trying to remedy all the potential possibilities, i finally brought it to Acura dealer for diagnostic($126). i was told my ECU or PCM($900) is bad! Seach n found used one with same # still does work.Got a used Milti-function box, air flow box.Still hot air and A/C compressor not engaged.















Finally, got a used Heater control panel(above the radio). Now everything works like a champ! Good Luck!