Well got the compressor going and it pumps cold air..Yeah!!!!.....

BUT.....The center vents do not work on A/C all the time....Cold air does come out the 2 outer vents...but if you press on the gas pedal (low Vaccuum) the cold air w/ come out both the side vents and the de-frost vents, let your foot off the gas and the cold air comes out of just the side vents....????...sounds like a vaccuum leak ???....AND THEN the cold air w/ come out of the center vents sometimes.....Any thoughts on where to first start???

Hank
86 300E
90 Honda Accord EX
90 Volvo 240 DL
90 Dodge Dakota 3.9 P/U