Quote:
Originally Posted by MBeige
When it's cool outside, I get cool air in my AC. But when it gets warm like what has happened last week or the other week, the AC only blows cool when engine is cold, but when it warms up the AC blows warm air. I can sense that it's trying to cool it but all it gives is warm air.
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That part of your description sure sounds like a monovalve issue. You can rule out the monovalve by pinching off the heater hose (without damaging it) and seeing if it still blows warm.
Does it blow warm at highway speed, or just in traffic? If it's just in traffic, I would suspect a fan issue.