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Message: <blockquote data-quote="pedro7of9" data-source="post: 2595166" data-attributes="member: 463137">the ac was working,,,so you replaced the R 134..WHY1 you need a mechanic as 1/2 the battle is a correct diagnosis2 get shop manual 25 dollars that will save you from yourself3 blend doors,,the dash control that directs cool and heat uses vacuum hoses to open/close doors,, so the switch is stuck/broke,,or vacuum hose is disconnected/;leaking or most likely the solenoid/door is stuck..its hard to get at and often the dash needs to b removed if you cant reach under itsorry 4 sarcasm but its my nature</blockquote>