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Hissing sound while stepping on brake pedal

Discussion in '1st Gen. Tacomas (1995-2004)' started by Logans2001, Sep 8, 2024.

  1. Sep 8, 2024 at 1:26 AM
    #1
    Logans2001

    #1
    Logans2001 [OP] What’s crackin’

    Joined:
    Jan 23, 2016
    Member:
    #175792
    Messages:
    1,967
    Gender:
    Male
    San Diego, CA
    Vehicle:
    2001 v6 4WD auto
    Title says it. I did just get my master cylinder replaced a month ago. Also just got a p0441, p0446, and p0450 a week ago. Could any of these be related? Braking works great since I got the MC replaced. Fluid is still full.
    Am I worrying over nothing? I’ve just never noticed it before. Thx gents.
     
    Logans2001, Sep 8, 2024
    #1
  2. Sep 8, 2024 at 4:15 AM
    #2
    Black97v6MT

    #2
    Black97v6MT 365k on the 0D0 ... 5VZFE R150F 4WD

    Joined:
    May 9, 2024
    Member:
    #449422
    Messages:
    1,168
    First Name:
    iMA0
    tacoLand USA
    28 years of livin' Gen1 TacoLife...
    do you have an audio of this hissing sound?
     
    Black97v6MT, Sep 8, 2024
    #2
  3. Sep 8, 2024 at 4:23 AM
    #3
    KdF

    #3
    KdF Old Rednek Type

    Joined:
    Jul 13, 2007
    Member:
    #2079
    Messages:
    949
    Gender:
    Male
    East-ByGod-TEXAS!
    Vehicle:
    2000 Prerunner SR5 TRD 2WD
    Brake Booster losing pressure.
     
    KdF, Sep 8, 2024
    #3
    kuntry09, aaqr18 and Kiloyard like this.
  4. Sep 8, 2024 at 4:45 AM
    #4
    Logans2001

    #4
    Logans2001 [OP] What’s crackin’

    Joined:
    Jan 23, 2016
    Member:
    #175792
    Messages:
    1,967
    Gender:
    Male
    San Diego, CA
    Vehicle:
    2001 v6 4WD auto
    No I don’t think it’ll pick it up very well anyways. And unfortunately you can’t post videos on here unless it’s a YouTube link.
     
    Logans2001, Sep 8, 2024
    #4
    Black97v6MT[QUOTED] likes this.
  5. Sep 8, 2024 at 10:33 AM
    #5
    Kiloyard

    #5
    Kiloyard Road Warrior

    Joined:
    Oct 28, 2017
    Member:
    #234330
    Messages:
    1,028
    Gender:
    Male
    First Name:
    John
    Phoenix, AZ
    Vehicle:
    1999 3.4L SR5 4X4 405K miles
    Toytec Boss/Eibach Coils & Deaver J59's
    Mine started making a whooshing about a week before the booster failed. Better start looking for a replacement. I'd recommend painting the aftermarket booster if it's not painted from the factory.
     
    Kiloyard, Sep 8, 2024
    #5

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