While investigating an erratic rpm at idle issue, I noticed the vacuum line that comes out behind the battery and connects into the right side of the intake duct is broken. My Haynes manual has no vacuum diagram, so I am clueless as to what it is for, or if it will help steady my idle rpm. I was thinking I may be able to get a fitting and splice the two pieces together. Any ideas? I will take a photo and attach it later today.