Florida 2002 SXT with about 98k miles, belongs to sis-in-law. Recently the a/c would blow cold air through the vents in the morning but not the afternoon. Now, it doesn't work in the morning either. I was led to the "blend door" scenario but there's not much in the Neon forum (plenty in the Ram forum). Does this car have a blend door or is it a relay? How tough is it to get the blend door working properly (if that's the case)?