Help with broken vacuum line.
Hello I am new to the forum. I was wondering if any one knows where a particular vacuum line goes to. First off, I have a 02 F150 XLT 4x4 with the 5.4 engine it also has AC. My truck has 128,xxx miles on it. I have found a broke vacuum line coming from the vacuum reservoir behind the battery, it is not the lines attached to the bottom but the line that attaches to the top port the line looks like 1/8 diameter line that hooks to the top of the vacuum reservoir. I have no idea where this line is supposed to go to. The other issue which I am sure is tied to this, is when I accelerate my panel setting goes to the the default defrost setting. Any help would be appreciated.