Question about 1995 Land Rover Range Rover

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Loss of Brake Pressure

We don't see any leaks and we can pump them up but if we hold our foot on the pedal it slowly goes to the floor

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Most of the time this will be a worn out master cylinder bypassing fluid inside its self.or sending fluid into the brake booster

Posted on Dec 14, 2008

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Even after replacing front and rear brakes, the pedal goes nearly to the floor (but does stop the vehicle). What do I need to do


Brake booster has gone bad or u have a vacuum leak. Check the seals for leaks around booster where the. Fluid goes in the plastic holder. Check for vacuum leak going to break booster

Apr 15, 2015 | 1999 Plymouth Breeze

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Intermittent loss of brake pedal,only happned three times but customer says it went to the floor


If this is a hydraulic brake system, the first thing to do is to check the brake fluid level in the reservoir. Assuming that it is not down, the problem will probably be in the master cylinder. Try pushing the brake pedal down very slowly. This will not put a lot of pressure on the seals in the master cylinder, and if there is a problem, the brake fluid will leak past the seal allowing the pedal to go slowly to the floor. If you push the brake pedal down rapidly, the pressire on the seal will hold it against the master cylinder wall, and the brakes will hold fine.
If the fluid level in the reservoir is low, look at all of the wheels and slave cylinders to see if you can locate a leak. I don't suspect a leak based on your description of the problem, but it's worth checking.

Apr 04, 2015 | Mitsubishi Cars & Trucks

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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)

Jul 04, 2014 | 2003 Jeep Wrangler

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The brake pedal goes to the floor, its ok after its pumped a couple times. it was inspected a couple weeks ago, theres no leaks and the master is full of fluid. seems like air in the system


Hi would seem like the internal seals in the master cylinder are letting fluid past, If after you have pumped it a couple of times if you just rest your foot on the peddle with slight pressure will it slowly go to the floor this is a sure sign, You need to replace or recondition the master cylinder

Jun 02, 2014 | 2002 Kia Spectra

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I have replaced my brake pads I've bleed my lines several times. The brakes work fine until I hold the brake pedal down, thats when it slowly goes down to the floor in a few seconds and the brak


sounds like the brake master cylinder seals are worn buy a master cylinder kit and get a mechanic to repair it it is a lot cheaper than replacing the whole unit

Feb 27, 2013 | 1995 Honda Passport

1 Answer

My brake pedal goes all the way to the floor


Brake pedal goes to the floor? When does it happen. That is the most important piece of information. Most brake systems are power assisted via vacuum from the engine. Your brake booster is what makes the "power assist" work. There are some specific times when you will feel your brake pedal "fade" to the floor and it is normal due to the cycle of the brake components operation.If your brake pedal goes to the floor every time you step on it, stop driving and get to a repair facility! If the pedal is working when driving and the vehicle seems to be working as it always has, then chances are there is no concern. To be on the safe side, have it checked the next time you are in for any other type of service.There is a sensor inside most brake reservoirs that activates the indicator light in your instrument cluster when the level is lower than it should be. As your brake pads wear down, the system requires more fluid so the level at the reservoir drops setting the light. Same thing if there is a leak. The fluid level drops and the light goes on. This brake fluid leak would most likely be combined with a spongy pedal or a pedal fade every time you step on the brakes. A leak would also almost always have a wet area around the leak. Sometimes the leak can be internal to a part of the car you cannot see, so don't count on it.One easy way to check most brake boosters and the brake system for leaks is to turn the vehicle off and pump the brake pedal. Every time you depress the pedal you should feel the pedal "height" come up and the pedal get harder. After a few firm pumps of the pedal, hold it down. Leave pressure on the pedal for 20 seconds or so. Does the pedal move slowly (or quickly) to the floor? If so then there is a leak somewhere in the system. Keeping pressure on the brake pedal, start the vehicle. Does the pedal no drop? It should. That is the power assisted vacuum kicking in as the engine starts to run.The bottom line is that we are talking about your brakes. Your life, your passengers lives and the lives of others on the road around you depends on that system working properly. If you have any doubts, or feel uncomfortable, take it in to have it looked at. Know specifically what it is doing so that you can have your repair facility look at what you are feeling and tell you if

Oct 29, 2011 | 1987 Nissan Pickup

2 Answers

Brake pedal goes to floor when first applied. Fluid within limits. No signs of leak(s). Hissing sound noted. No vibration.


Hissing sound indicates booster diaphragm has torn. Please let me know if you would like instructions for replacing the booster.

May 28, 2011 | 2008 Toyota RAV4

1 Answer

Brake peddle goes all the way to the floor. brake peddle will have pressure when the car is off, but when you turn it on brake peddle loses all pressure. how can i tell if its the master cylinder or the...


first make sure there are no brake fluid leaks, sometimes the steel lines get rotted and start leaking. to test the booster with the engine off pump brake pedal about 10 - 12 times on the last pump hold the brake pedal down and start the car if the booster is good the pedal will drop alittle.

Feb 02, 2011 | 1994 Oldsmobile Cutlass Ciera

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Bleeding air out of brake line after changing brake pads,we got no air bubbles but still have a spongy or soft brake peddle


Bleed the longest line first, then progressively shorter lines. Make sure you are using the correct technique in bleeding--be sure the master cylinder is always full, then pump the pedal several times in quick succession and hold pressure while your assistant opens the bleeder valve slowly and lets it drain until your foot is to the floor. Hold your foot until the bleeder is again closed, then repeat the process. Don't reuse the expelled fluid. Hope this helps!

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Brakes


check your brake booster vacuum pipe for leaks otherwise it sounds like your brake booster has failed

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