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air cleaner vacuum ports 850 1997

posted by  dave052 on  Sun Jul 28 09:52 CST 2013
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last visit: Mon Sep 15 17:26 CST 2014
[RELATED]

on the air cleaner there are two vacuum ports,a yellow tube that that raps around the opposite side of the manifold, and a black tube,no idea where it connects near the air cleaner,somewhere, does anyone know?








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    ANSWER air cleaner vacuum ports 850 1997

    posted by  KlausC on  Sun Jul 28 10:58 CST 2013
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    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    On my 1996 850 NA, there was a white line that plugged into the rear side of the air cleaner box - that line originated at the vacuum tree at the throttle body. The other black vacuum line wraps around the air box and plugs into the bottom of the air box where it controls the heated air valve.

    I negated the heated air by using a box from a turbo which has cold air only and capped the vacuum tree port. When the mechanical thermostat in the bottom of the air box fails, the MAF will cook and the warm air slows the mid-range torque.

    --
    Klausc, a Volvoholic

    This post has been marked as an answer to the original question.


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