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Thread: THE GAUGE THATHE GAUGE SHOWS VAC AND BOOST ON 1990 sc 35th went out

  1. #1
    Join Date
    Feb 2010
    Posts
    35

    THE GAUGE THATHE GAUGE SHOWS VAC AND BOOST ON 1990 sc 35th went out

    The gauge that shows when you are using vac boost and etc was working for the first couple of days when i purchased my vehicle it now froze on the center mark. Can someone tell me how to fix this or better yet by this gauge freezing up can it hurt my cars performance 1990 sc 35th thanks for input

  2. #2
    Join Date
    Apr 2002
    Location
    Philly
    Posts
    2,439
    Quote Originally Posted by tctc1981hotmail View Post
    The gauge that shows when you are using vac boost and etc was working for the first couple of days when i purchased my vehicle it now froze on the center mark. Can someone tell me how to fix this or better yet by this gauge freezing up can it hurt my cars performance 1990 sc 35th thanks for input
    It sounds like the either the vacuum line came off the gauge or there is a hole in the line.
    1992 Thunderbird SC
    13.322 @ 102.81
    1993 Thunderbird SC 5spd..white
    2002 F350 SD Diesel (SC tow vehicle)

  3. #3
    Join Date
    Oct 2004
    Location
    Charlotte, NC
    Posts
    8,159
    Check the hose on the back of the gauge, or it could have come loose from the intake plenum....

  4. #4
    Join Date
    Dec 2009
    Location
    Levittown, NY
    Posts
    460
    haha, at 15psi my stock and aftermarket gauge both went out, The nylon and silicone connector hoses popped off each other. Check that, closest corner to the driver in the engine bay/ good luck.

  5. #5
    Join Date
    Feb 2010
    Posts
    35
    Thanks for the comments it was the vacuum hose it came off

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