Anyone know why this happens? Seems to be fine when my transmission is in1st or 2nd but anything at highway speed my A/C stops working when pressing the gas. After I let off its full blast cold again. Can someone help me or direct me to a thread?

 

The thread you want to search for is labeled "Wild Vents"

 

sounds like a vacuum leak, mine did this and it had a bad fitting under the battery at the cruise control module.