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The brakes slowly lose pressure when I press the pedal on my 1996 Tahoe 4x4 4 door

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  • Cars & Trucks Master
  • 366 Answers

Then you have a leak. either internally (master brake cylinder) or externally (pipes or slave brake cylinders)

Posted on Feb 16, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Audi A3 diesel 2000 reg brake pedal going to the floor with engine running and heavy pedal pressure

you should have bench bleed the master cylinder first before installation return cylinder and get a new one than bench bleed it first than install it to car once installed you may have to bleed each wheel

Posted on Jul 07, 2008

  • 12 Answers

SOURCE: Saturn SL2 Brake Problems

sounds like your breaks need to be bled.
if it still is kind of spoungy then the routers are bad.

Posted on May 29, 2009

SOURCE: I'm having trouble bleeding the brakes.

It sounds like

  1. you need to check your cap and
  2. keep your car running when you bleed the brakes.
  3. SHould be 3 medium speed depressions to the floor, holding the third one.
  4. slowly open the valve until the fluid has no bubbles.
  5. Start at the wheel closest to the master cylinder, Should be on the driver front side.
  6. Then do passenger front, driver rear, passenger rear.
  7. You may need to repeat a second time....
  8. Also check your master cylinder for leaks by cleaning it with break cleaner and checking for fluid leakage,


GOOD LUCK AND PLEASE RATE THIS POST!!!!!

Posted on Mar 14, 2010

johnjohn2
  • 5763 Answers

SOURCE: i have a 97 jetta and when i try and bleed my

When bleeding you start at the rt rear to left rear to rt front to left front always checking to make sure master stays with fluid, also start by removing one bleeder at a time and make sure the hole is clean and free of dirt brake clean should flow through, do this to all 4, then have someone pump pedal 3 times and hold then open bleeder when you close bleeder tell them pump again three times, do this all around until you have a good pedal, also check for leaks after bleeding, may have bad rusted line or bad master but bleed each wheel good first.dont worry about pedal going to floor everytime, just make sure fluid flows out of all bleeders when bleeding. hope this helps.

Posted on Jul 26, 2010

  • 4 Answers

SOURCE: I HAVE A 1996 SATURN SL 1 I HAVE NO BRAKE PEDAL SO

MASTER CYLINDER SHOULD BE BENCH BLED BEFORE INSTALATION.PUT MASTER CYL. IN VISE-SHOULD HAVE COME W/RUBBER TUBES & ADAPTERS TO CURCULATE FLUID FULL STROKE OF CYL. TILL ALL AIR BUBBLES ARE GONE.THEN INSTALL MSTR CYL./GETT SOMEONE TO PUMP BRAKES THEN HOLD PEDAL FIRMLY WHILE YOU RELEASE BLEEDER VALVES ONE AT THE TIME FARTHEREST FROM THE MSTR CYL. TILL ALL AIR IS PURGED. REPEAT STEPS TO EACH BLEEDER TILL ALL HAVE BEEN DONE.GOOD LUCK W/THAT!

Posted on Mar 30, 2011

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1 Answer

How do I fix a falling brake pedal


Can you see a leak anywhere else, around the master cylinder or the front calipers, or anywhere along the brake lines? Look on both sides of the firewall around the pedal shaft. Do you lose fluid level on repeated brake applications? Any of that means fluid is still leaking out.

When the engine is running and you get a slowly falling pedal, can you pump it up to a higher level, by pumping the pedal? If so there is still some air in the brake system. ABS brakes can be very difficult to bleed completely without a pressure bleeder.

I think you can discount water in the fluid as you have bled it twice. Anyway don't leave this go, as the Caravan is a heavy vehicle.
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Why do i have loss of brake pressure


Long shot: Bad master cylinder - Typically the brake pedal will slowly sink to the floor. On early 2000 vintage Chrysler products you need to check brake lines as they have been known to rust (and fail catastrophically)

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Switch is at bottom of steering column and actuated by the brake pedal arm. Twist to unlock from holder, unplug wires, replace bad unit and reinstall.

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The clutch uses the brake fluid to work; check the brake fluid level.

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If you mean it is locked in Park position the first thing to do is press the brake pedal and verify you have working brake lights.

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I have a 96 Tahoe and when i press the brake pedal i hear a hissing sound by the pedal and engine sometimes stalls, what could the problem be ?


That sounds like a brake booster problem. The brake booster runs on engine vacuum to help make the brake pedal easier to push and easier to stop the tahoe. When a booster develops an internal leak, you can hear the vacuum escaping through the leak when you step on the brake. The engine stalls because the vacuum leak in the brake booster also causes a large vacuum leak for the engine.

To verify that this is actually the problem, go outside the vehicle with the hood open. Find the large brake fluid reservoir attached to a large round metal black (usually) canister on the driver's side of the firewall. (back of the engine compartment.) There is a large black rubber hose pushed into the top of the black canister, which is the vacuum line attached to the brake booster. Pull the rubber hose out of the grommet on the booster and stick your finger over the hose. Have someone start the tahoe. You will feel a considerable amount of vacuum pulling at your finger, and if you take your finger off the hose, the engine will stall. Also have someone step on the brakes while your finger is over the vacuum hose. If the noise is gone then you know the problem is in the brake booster.
Don't forget to re-attach the vacuum line to the brake booster. Failure to do this will result in the engine running very rough (if at all) and the brakes will require excessive effort to try to stop the tahoe.

Aug 05, 2011 | 1996 Chevrolet Tahoe

2 Answers

1996 dodge turbo diesel 2500 master cylinder


if you talking brakes not clutch. you can pump the brakes all day long and they don't build pressure and you not losing fluids the master is out. now if you pump them up and they are rock hard your hydrabooster is out.now if your mechanically incline you can order a master cylinder rebuild kit for like 20-30 bucks which is basically orings from local parts store and only tools you need are snapring pliers. or you can change the master ,bench bleed it first then bleed out the rr,lr,rf,lf in that order.hope i help.all under 100 bucks

Jul 13, 2010 | 1996 Dodge Ram 2500 Club Cab

1 Answer

No brake fluid to the rear wheel cylinders


You'll need to start bleeding the brake system at the Master cylinder to determine where the problem lies.

The lines coming out of the master cylinder will need to be loosened & bled there, initially you can just do the back ones to identify the problem, but once fixed, the system will have to be bled from the Master cylinder first, then the farthest wheel from it, then next farthest, then next, until you do the drivers wheel last.

This method of bleeding the brakes prevents air from crossing from one line to another, causing air to be left in the system.

Back to bleeding the rear brakes first: As someone pumps up the brake pressure, making sure the resivoir stays full, with the cap on between bleeding, and have the person pressing the pedal to do these thngs.
1. Always move the pedal slowly, pressing and releasing.
2. Never release the pressure on the pedal after bleeding a brake, until the line is tightened, then release slowly to prevent air from getting into the fluid.

You should of course get fluid at the master cylinder when you bleed it (or just replace it), then you'll need to bleed the line at the right rear wheel (first) a few times to get fluid if it's been leaking, then the left rear wheel. If you get pressure but no fluid to the rear and the master cyliinder did have pressure released when you bled it, there is either a restriction in the line itself, or the porportioning valve could be damaged. (unusual for the valve to go bad actually, inspect lines for damage such as being pinched if you're getting pressure but no fluid.

Final test if it hasn't been resolved-remove lines at porportioning valve & make sure fluid is leaving/entering there as it should. If you find it defective, a good replacement can come from a salvage yard, or you can buy them new.

Brake fluid on the floorboard under the dash near the brake pedal=bad Master Cylinder.

good luck

Feb 21, 2010 | 1996 GMC Jimmy

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