For those of you who having problem with hot air or ac coming through the defrost.
I have a 96 Mark VIII and I was having trouble with air coming through the defrost only, and I red on this forum the problem was a vacuum line, so I went on the hunt to find the leak, after about three days of looking under the hood, couldn't find nothing, then decided to chase the line. That is what I found and my vents started to work again. I still have a problem with my blend door, some time my ac work and some time it don't, and I was wandering should I put in a new blend door.
Any one thank.

I have a 96 Mark VIII and I was having trouble with air coming through the defrost only, and I red on this forum the problem was a vacuum line, so I went on the hunt to find the leak, after about three days of looking under the hood, couldn't find nothing, then decided to chase the line. That is what I found and my vents started to work again. I still have a problem with my blend door, some time my ac work and some time it don't, and I was wandering should I put in a new blend door.
Any one thank.
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