[andytaurus]

latly every time i turn my ac on it will work perfect until i press on the gas to accelerate, thats when it will go from blowing out the vent to blowing out the defroster then when i let off the gas it will start blowing out the vents again.

its seems to do this every time a load its put on the engine, im thinking this could be a vacum leak but i have no idea..... does anyone have a idea on what this could be causing this problem?????

 

[MrBooMY]

It is 100% a vacuum leak. Check the lines that are under the dash first by listening for a leak. If you don't find anything, then you need to start checking under the hood. It's gotta be a pretty bad leak to cause the symptom that you are describing.