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Brake pedal hard

Discussion in '1st Gen. Tacomas (1995-2004)' started by Metalman1, Jul 22, 2023.

  1. Jul 22, 2023 at 7:22 AM
    #1
    Metalman1

    #1
    Metalman1 [OP] Active Member

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    Brake pedal real hard to push. Can barely stop the truck. Thinking the booster. What say you guys?image.jpgimage.jpg image.jpg
     
    Metalman1, Jul 22, 2023
    #1
  2. Jul 22, 2023 at 7:24 AM
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    tcjacado

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    tcjacado Well-Known Member

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    tcjacado, Jul 22, 2023
    #2
  3. Jul 22, 2023 at 7:40 AM
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    Bivouac

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    Bivouac Well-Known Member

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    Northern Lehigh Valley Pa
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    Remains to be seen I bought the tires and wheels the rest came along
    A failed booster should not effect the stopping of the truck.

    Just more force needs applied to the pedal !! I drove home a 1000 miles with a failed booster the vacuum line plugged.

    How long have you had this problem?
     
    Bivouac, Jul 22, 2023
    #3
  4. Jul 22, 2023 at 7:56 AM
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    Metalman1

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    Metalman1 [OP] Active Member

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    Metalman1, Jul 22, 2023
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  5. Jul 22, 2023 at 7:57 AM
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    Metalman1

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    Metalman1 [OP] Active Member

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    Just happened this morning. Pedal hard as a rock.
     
    Metalman1, Jul 22, 2023
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  6. Jul 22, 2023 at 8:00 AM
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    Metalman1

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    Metalman1 [OP] Active Member

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    Just happened this morning
     
    Metalman1, Jul 22, 2023
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  7. Jul 22, 2023 at 8:09 AM
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    Bivouac

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    Bivouac Well-Known Member

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    Remains to be seen I bought the tires and wheels the rest came along
    Any other problems ?

    Increased engine idle?

    have you done The brake booster checks?

    Any issues leading up to this ? Having a booster fail over night is strange.

    Things were fine yesterday driving?
     
    Bivouac, Jul 22, 2023
    #7
  8. Jul 22, 2023 at 8:25 AM
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    Metalman1

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    Metalman1 [OP] Active Member

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    What brake booster checks?
     
    Metalman1, Jul 22, 2023
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  9. Jul 23, 2023 at 8:11 AM
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    Glamisman

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    Glamisman Well-Known Member

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    Verify that there is vacuum at the hose where it connects to the booster first. Pull the adapter fitting and see if vacuum passes through that. If there is vacuum present the odds are that the booster has failed.
     
    Glamisman, Jul 23, 2023
    #9
    Dm93 likes this.
  10. Jul 23, 2023 at 8:39 AM
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    Metalman1

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    Metalman1 [OP] Active Member

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    New booster and master cylinder. Problem fixed. Thanks for the input
     
    Metalman1, Jul 23, 2023
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    Dare Devil Diablo, Kiloyard and Madjik_Man like this.
  11. Jul 23, 2023 at 3:31 PM
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    wingnutj468

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    wingnutj468 Well-Known Member

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    Is there a preference on master cylinder/ booster? Aftermarket acceptable or go full Toyota? My rear brakes are only working intermittently. Sometimes, when you mash the brake really hard, you can feel it “give way?” and then all the brakes work fine. But here recently, the pedal is hard and a little closer to the top. On a recent drive with wet pavement, doing a brake check at about 25mph confirmed only the fronts locking up. Any suggestions?
     
    wingnutj468, Jul 23, 2023
    #11
  12. Jul 30, 2023 at 10:16 AM
    #12
    andywear

    #12
    andywear Active Member

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    Same issue with mine, just have to put all your weight into the brake peddle to slowly stop.
    I bought my Brake Booster from RockAuto, received in 3 days.
    2 things learned:
    New booster did not have a gasket that goes between it and the Master cylinder. And I couldn't find a match on line, so I used good old RTV.
    gasket.jpg

    And I noticed on all the YT vids I watched of how to swap out your Brake booster to take off the master completely by taking the brake lines off and taking it out of the engine bay, however, there is a enough play to just remove the nuts off from the master and the 4 nuts from interior brake bracket and wiggle it off. Helped speed up the process because you don't have to bleed the system. :cheers
    BB.MC.jpg
     
    andywear, Jul 30, 2023
    #12
    Madjik_Man likes this.
  13. Jul 31, 2023 at 9:36 AM
    #13
    Metalman1

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    Metalman1 [OP] Active Member

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    What exactly does a gasket between the master cylinder and booster do? They are both individually sealed units that bolt together.
     
    Metalman1, Jul 31, 2023
    #13
  14. Aug 3, 2023 at 8:37 AM
    #14
    andywear

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    andywear Active Member

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    Tulsa, OK
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    We'd have to ask the MFG on that. :cheers:
     
    andywear, Aug 3, 2023
    #14

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