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The vacuum connection on the manifold by the #1 intake and pointing toward the timing belt does not exist on my car. I have the vacuum manifold out and can inspect it carefully.
The vacuum diagram for my model (I think) is here:
http://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=12325&p=98764
and I think it shows that the smaller vacuum line from the PTC runs along the top of the engine and then to the vacuum tree on the manifold. It looks like this may be the design for early 1994 models only.
Cheers.
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