Question about 1994 Toyota Pickup

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Brake system not holding pressure

I have a 1994 toyota pick up 4wd v6 with ABS. we've changed the brake master cylinder but we are not holding any pressure. we are lost. if anyone knows what to check or a website i can check out please let me know. thanks

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  • Ciera Stewart Jan 14, 2009

    what do you mean bench bleed the master cylinder?

  • O Mclean May 11, 2010

    What do you mean not holding pressure is PEDAL SOFT?? Explain

  • John Sproles Feb 01, 2013

    I have a '94 4runner and have soft pedel that will slowly go to the floor and relese brakes when stopped in traffic. Have replaced master cyl twice and properly bled system. pedel is not spongy,just soft and continues to floor.

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YOU HAVE LOTS OF GOOD INPUT JUST SLOW DOWN MAKE SURE HELPER IS ON THE SAME PAGE WHEN YOU SAY DOWN HELPER NEED TO KEEP IT DOWN TILL YOU SAY UP.. GOOD LUCK

Posted on Feb 16, 2013

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  • Master
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Did you bench bleed master cyl. before you installed it? its either you did not get all the air out, or you got a defective master cyl. if you did everything right and it will not hold pressure, than i would say its defective. believe me you do get bad ones, expecialy if they are remans.

Posted on Jan 14, 2009

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  • Master
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Ok this is pretty simple braking system. FOLLOW these steps and relax, you will solve this problem. I also must say that the way this sound I can almost bet that you got a BAD MASTER CYLINDER (Its defective)

  1. First fill master cylinder with fluid and bench bleed master, alot of company send a bench bleed kit with masters (rubber hoses and plastic fittings) Its pretty simple connect hoses with fitting and fill master with fluid and leave cover off put ends of hoses into fluid and using a long screw drive push master in and out until all air are gone and just the fluid is flowing.
  2. Install master and connect all lines back on master then bleed rakes in this order RIGHT REAR---- LEFT REAR----RIGHT FRONT-----LEFT FRONT. Just in-Case you don't know how to bleed pump brake pedal 6 times and the hold pedal to the floor. While still holding pedal to the floor open brake bleeder screw on caliper/wheel cylinder.....Pedal will shoot to the floor keep pedal on the floor and tighten bleeder screw. Pump again and continue this process on all wheel until all the air is out the system and your Brake should be good. HOWEVER IF YOU HAVE A DEFECTIVE MASTER YOU MAY CONTINUE TO GET AIR BACK IN SYSTEM. If this happen BINGO .. You will need a MASTER CYLINDER. Good Luck contact if you need more help,thanks for using FIX A

Posted on Jan 14, 2009

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On 1992-1994 and 1995-00 a scanner is used to perform the brake bleed. But on yours, I think it's different according to the manual.
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