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Boost reduces vacuum closing vents 200 1985

posted by  yankee on  Wed Jul 29 17:01 CST 2009
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last visit: Thu Oct 16 10:27 CST 2014
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My Brick is a 1985TIC...When engine is in boost vents seem to close reducing air flow into cabin...Never noticed this before I repaired my AC...Is there a check valve to prevent this and if so where is it located...Thanks in advance








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Boost reduces vacuum closing vents 200 1985

posted by  yama on  Thu Jul 30 00:28 CST 2009
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last visit: Fri Oct 25 05:26 CST 2013
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There should be a one way valve located on the intake manifold. It looks like an oreo cookie with one side taken off. Probably just dirty.








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Boost reduces vacuum closing vents 200 1985

posted by  yama on  Thu Jul 30 00:28 CST 2009
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last visit: Fri Oct 25 05:26 CST 2013
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There should be a one way valve located on the intake manifold. It looks like an oreo cookie with one side taken off. Probably just dirty.








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Boost reduces vacuum closing vents 200 1985

posted by  Stickbuilder on  Wed Jul 29 21:51 CST 2009
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last visit: Fri Oct 24 03:31 CST 2014
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I don't know about the turbo version, but you could add one in the vacuum supply line and even add a larger vacuum tank. Going into boost is going to remove the vacuum source, so maybe even a small electric vacuum pump would do what you want. Some diesel cars have them, so finding one should not be a problem.







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