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    Hissing sound

    Probably super common but cant find the fix. I remember reading something about plugging a vac line near the brake pedal but cant find that info again.
    Its a hissing sound from inside the cab, sounds like its right infront of the driver side dash that seems to dissipate when throttle is pushed
    1989 MGM & 2016 Tacomasigpic

    #2
    http://www.grandmarq.net/vb/showthre...release-thread

    check the pics out on the first post. The crescent shaped valve is the usual culprit. May also be the brake release actuator. The quick fix is to pull the black vacuum line off the crescent shaped valve and plug that.

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
    Originally posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Originally posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

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