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Brake pedal goes to the floor on my xj6 jaguar

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 109 Answers

SOURCE: Brake pedal goes down to floor. Putting brake fluid doesn't solve problem. Vehicle must coast to a complete stop.

First look for obvious leaks under the vehicle, especially the inside area of each wheel... If you see fluid, you have either a blown cylinder seal or a bad line (check the rubber hoses to the front and back brakes too) Repair the offending part and bleed the air out of the system... (remember to clean pads or shoes if they have fluid on them)... If you see no hint of leakage anywhere, then suspect the master cylinder... if you remove the master cylinder, check and make sure that it didn't leak fluid into the brake booster diaphragm (Brake fluid will destroy the booster)... as in any repair when you open the system (lose fluid), you will need to bleed out the air to restore function... hope this helps...;-)

Posted on May 04, 2009

  • 2187 Answers

SOURCE: 87 jag xj6. Brake pedal spongy goes all the way

If the brake lines and fluid is clear then you may have to look at the brake booster found at the other end of the brake pedal under the hood...

Posted on Jul 23, 2009

j_del
  • 1586 Answers

SOURCE: brake pedal goes all the to the floor. can not

Check the reservoir to be sure the fluid is full. If not, top it off and try it again. If there's still trouble building pressure, pump the brakes a bunch of times, and then check around each wheel for fluid on the ground. If you see none, it's possible that you have a break in the line somewhere through the chassis and that the fluid is leaking out inside. If you see no evidence of leakage, and the reservoir is still full, you need a new brake master cylinder - what will have happened is that the diaphragm around the plunger inside the master cylinder (which moves through the cylinder when you push the pedal, and forces fluid out to the wheels) has a hole or tear in it, so instead of pushing the fluid out to the brakes, the plunger simply moves through the fluid. It never builds pressure, and your brakes don't work.

Posted on Dec 22, 2009

Testimonial: "thanks for the info. very helpful. harry Newman"

steve_e_uk
  • 1675 Answers

SOURCE: brake problem

hi this is air in the system if you pump them do they go hard as normal? what you will need to do is , starting from the furthest caliper away from the fluid bottle you have to bleed the air out, you can buy bleeding systems for a few bucks/pounds but you can also do it yourself, to do this, find a length of small bore clear hose/pipe, locate the bleed nipple on the caliper, find a wrench/spanner that will fit the bleed nipple, put that on first, then get your pipe/hose, and slide that over the end of the bleed nipple ( make sure the pipe/hose is a nice tight fit ) locate a small clear glass jar partly fill it with brake fluid, put the hose/pipe into the jar so the fluid covers the end ( we don't want air to go up the pipe/hose ) then get a friend to pump hard on the brake pedal till it goes hard, and when it does tell them to keep their foot hard on the pedal , you then undo the bleed nipple ( you should get some fluid come out fast) when the pedal reaches the floor ( this happens immediately if you have opened the nipple far enough, then when it has hit the floor do the bleed nipple up again before they raise the pedal keep doing this till you see no bubbles coming through the hose/pipe, repeat the operation on the next furthest away, and so on till all the air has been removed from the system, be sure to check the fluid in the reservoir regularly as this will cause air to get back into the system again if it runs to low....hope this has helped and good luck, please vote thanks

Posted on Mar 20, 2010

  • 12 Answers

SOURCE: brake pedal goes to the floor

check vacumn and\or connections to the vacumn boost cannister.

Posted on Apr 21, 2010

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1 Answer

Brake pedal goes to the floor and when bleeding brakes on the front no fluid came out. why?


you don't have all the air out of the system yet, or you have a bad master cyl

Oct 14, 2015 | 1990 Jaguar XJ6

1 Answer

Hard brake pedal


I am not sure in what order you did the brakes but you always start with the caliber farthest away from the master cylinder.1st rear pass side, then rear driver side,then front pass, and last front driver..

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Hi,I have a 1993 jaguar xj6,the braking system is very stiff when you push down on the brake pedal.the car will stop,but with force.and sometimes after a few minutes it will return to normal...


the first thing to look at is the brake booster, this is what make the pedal easy to push,make sure its getting vacuum,if there plenty of vacuum then i would say the booster is bad, the booster is where the master cylinder bolt too.heres a picture of it, hope this helps.aba0fab.jpg

Jun 02, 2010 | 1993 Jaguar XJ6

1 Answer

Brakes worked fine when parked now pedal is on floor car has been parked for 5 months


When it was parked fluid may have run out of a wheel cylinder, a caliper, brake line or the master cylinder and created an air space in the brake lines.
Rust could also be a factor depending on where and how it was stored. Rust could have developed on all of these items as well.
I would suggest bleeding the air out of the system and look for leaks afterwards.

Nov 04, 2009 | 1988 Jaguar XJ6

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Idle valve? If stuck in hot position (they often do), then not enough air when engine is cold. Symptom would be that it does this more when cold. The brake pedal thing gets me a bit, does it do it when the handbrake is pulled on but in Drive? If so, nothing to do with brakes, but just that there is a load on the engine caused by halting the torque converter creep, which goes back to idle control problem. If it is only with the foot brake, then I would suspect vacuum leak, there is a whole host of vacuum circuits on your Jaguar, have a look for hoses that have rubbed on the engine and have a slight hole or ones that have perished. Pressing the brake causes a reduction in vacuum to all the circuits, but if there is an air leak, then this can cause the inlet manifold vacuum to collapse and the engine to stall.

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1 Answer

87 jag xj6. Brake pedal spongy goes all the way


If the brake lines and fluid is clear then you may have to look at the brake booster found at the other end of the brake pedal under the hood...

Jul 23, 2009 | 1987 Jaguar XJ6

2 Answers

LOW BREAK PRASSURE HARD PEDAL


master cylinder needs to be rebuilt or replaced

Jun 25, 2009 | 1988 Jaguar XJ6

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