Question about Mazda B4000

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Unable to depress the brake pedal

When I started my 94 Mazda B4000 I heard a release of pressure, then my brake pedal was nearly impossible to depress.

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  • Anonymous Mar 13, 2014

    unable to start and brake wont depress

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Your power brake booster has failed, or the large vacuum line to it under the hood has come undone.

Posted on Mar 24, 2009

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2 Answers

Brakes with depress so gear shift can release


Your question is too vague. Brakes don't "lock".
Turn ignition on, but do NOT start engine. Step on brake pedal and you should hear a Click near the gear shift lever. This is the relay that unlocks the gear shift. If you don't hear a click each time you tap the brake pedal, you have an electrical problem - bad relay, break in wiring etc. You will likely need to have it towed to dealer for diagnosis/repair.

Aug 20, 2014 | 2004 Chevrolet TrailBlazer

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Unable to engage gear after depressing brake on oddesy


I agree...

When the brake switch (mounted on your brake pedal) is activated after depressing your pedal, this releases the gear mechanism.

Feb 21, 2013 | Cars & Trucks

1 Answer

2001 mazda b4000


The calipers are overloading and not fully releasing the rotors. Have you changed the proportioning valve in the brake system? You may want to start there.

Oct 16, 2012 | Chevrolet Malibu Cars & Trucks

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I have a 2004 Land cruiser and changed the right rear brake cyl and brake shoes . What is the proper procedure to bleed the rear brake system. Thank you for your help.


  1. Check the fluid level in the reservoir after bleeding each wheel. Add DOT3 fluid, if necessary.
  2. If the master cylinder was disassembled or if the reservoir becomes empty, bleed the air from the master cylinder as follows:
    1. Disconnect the brake lines from the master cylinder.
    2. Slowly depress the brake pedal and hold it.
    3. Block off the outlet plug with your finger, and release the brake pedal.
    4. Repeat 3 or 4 times.

  3. Bleed the brake starting with the one furthest from the reservoir and then the next furthest, etc.
  4. Depress the brake pedal several times, then loosen the bleeder plug with the pedal held down.
  5. At the point when fluid stops coming out, tighten the bleeder plug to 11 Nm (8 ft. lbs.), then release the brake pedal.
  6. Repeat until all the air in the fluid has been bled out.
  7. Repeat the procedure to bleed the air out of brake line for each wheel.
  8. Check the fluid level and add DOT3 fluid if necessary.

Aug 07, 2011 | 2004 Toyota Land Cruiser

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My back tire locks up on my 4x4 pic up on my Mazda b4000 4x4 1996


U MUST REMVOVE THE WHEEL TO CHECK THE BRAKES FOR OIL CONTAMINATION FROM A POSS LEAKING AXLE SEAL.

Nov 11, 2009 | 2007 Mazda B4000

2 Answers

94 Mazda B3000


Check the brake light switch located under the dash, and is energized by depressing the brake pedal.

Jan 28, 2009 | Mazda Cars & Trucks

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