heat and air

  1. Lawdawg86

    94 GT 5.0 only blows on HIGH

    Ok, so I figured out the 5.0 runs off vacuum for the heat and ac, at first I was only getting ac and heat through the defrost vents, now that I fixed that tiny plastic line and plugged it back into the rubber AC vacuum line coming from the tree I’m only getting HIGH as a option. I have no low...