Ok guys, I'm new to the forum, and have read a few things and really like what y'all have going here. I have a 2003 Model F150 4x4 that has always ran good for me, and has only had minor issues ever since I've had it. Not too bad considering it has 266,xxx miles on it and running 100 miles a day on the original motor & transmission.

Here's my problem - my air conditioning will only blow thru the defrost. I can hit vent on the control panel and it will blow thru the vents, but if i hit max ac it switches to defrost. I live close to Memphis, and it has gotten super hot around here and i really need this to work correctly. I'm hoping a little advice from y'all could help, bc a shop will cost me an arm and a leg. I'm not very knowledgeable about this stuff (have worked more on older vehicles) so i guess i'll need a fairly detailed reply if possible. I have looked under the hood looking for messed up vacuum lines but haven't seen any that looked bad.

Please help if you can and thank you for reading!

 

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