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Vacuum noise by brake pedal?! What is this craziness! 700

posted by  überbox on  Sun Sep 26 11:46 CST 2004
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last visit: Thu Nov 1 16:21 CST 2001
[RELATED]

88 volvo 740 turbo with 250k.

I started up car after washing it this afternoon and I noticed a hissing noise coming from my feet. Ruling out voodoo and Ohio serpents, I undid the bottom cover to inspect what was goin on. The noise, which sounds like a vacuum leak, is coming from the plunger that goes in to the firewall and is connected to the brake pedal. When I push in the brake pedal the hissing subsides.

Anyone had this happen before? What is this and what should I do?


Jes






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