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Old 06-29-1999, 11:51 PM
MB STARS MB STARS is offline
Senior Member
Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
Yes,M.B.DOC is right,I have seen vacuum pump
out of order cause by missing check valve,
replace vacuum pump that should fix your problem.
About your a/c venting problem I will start
form checking vacuum leak under dashboard.
a/c venting flap is operate by vacuum servo,
any one of then leak will cause just like your complain.
Good luck to you.