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No brake pressure when truck is running 1996 replaced master cylinder break booster pump new rotors new caplors pads and shoes too also there are no leaks any where we also bleed the breaks too

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  • Cars & Trucks Master
  • 5,362 Answers

Have you also bled the master cylinder?

Posted on Nov 01, 2012

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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keemo68
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SOURCE: 1974 super beetle

either the booster is bad or your proportioning valve is bad switch these out and repeat the bleeding proccess this should solve the problem

Posted on Sep 01, 2008

SOURCE: Ford Bronco II spongy brake pedal

if the booster is bad the pedal would be hard sounds like the e-brake is stuck take off the drums and make sure the arms are all the way back then did you adjust the rear brakes after changing the shoes

Posted on Dec 14, 2008

  • 1861 Answers

SOURCE: 1996 T-100 dash brake light will not go out

The brake fluid level sensor in the master cylinder is stuck in the lower position which completes the circuit to illuminate the light.. Try tapping lightly on the side of the reservoir to loosen it. If that does not help, you will need to replace the level sensor.
Thanks for choosing FixYa for assistance.

Posted on Jan 25, 2009

  • 6982 Answers

SOURCE: 1997 Jeep Grand Cherokee, hear air bubbling out

First, inspect all lines and fittings for seepage. If fluid is getting out anywhere, air is entering system as well. Fill the master cylinder and bleed it first. Make sure that when bleeding someone is holding pedal down until after you have closed each bleeder screw.(applies to all bleeders). Bleed the right rear, then l/r, r/f then l/f. While doing this keep checking master to make sure it does not run dry at any point. Make sure that at each wheel there is no more air coming out before you continue on to next one. Sometimes if there is an excessive amount of air, it's good to go around to each wheel twice.(use a small box wrench on bleeders if possible so you can actually see what's coming out.(Another way of doing this is to use a small section of plastic tubing like fish tank air hose, and attach it to end of bleeder (sometimes if hose is too small, it can be warmed in hot water so it expands over nipple.) put the free end in a glass jar with some fluid in it, keeping the hose in the fluid to prevent air from entering, using this method abslolutely prevents air from getting into system while bleeding)
Other causes of low pedal are worn rotors or drums and improperly adjusted rear brakes. If you have ABS, all of this applies but there may be a problem with abs system (usually will turn on abs warning light)
good luck

Posted on Feb 22, 2009

  • 1 Answer

SOURCE: I Hanve 1996 GMC 1500

did you try a brake booster ?

Posted on Oct 10, 2010

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