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terry potton Posted on Feb 06, 2017
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Hi I have a discovery 3 08 year and when I press the brake pedal it goes up and down as if abs is coming on and off all the time.

1 Answer

alan loveard

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  • Land Rover Expert 188 Answers
  • Posted on Jan 19, 2018
alan loveard
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Joined: May 03, 2011
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Start with the simple stuff. Carefully remove the electrical connector at the pressure switch (the cylinder on top of or at the side of the ABS pump) clean the connectors with a brass or carbon fibre (not steel) mini-brush. Then spray the connectors with electrical parts cleaner.
If that does not fix the problem, you will need to run some diagnostic tests on the pump itself but my bet is that it is a simple connection issue. I just fixed the same problem on my 93 SE Range Rover

5 Related Answers

Frank Chen

  • 330 Answers
  • Posted on Jul 27, 2008

SOURCE: Brake pedal goes too far

You have to check your master cylinder, pump your brake several times and hold it, see if is going down to the bottom, if does, the master cylinder is wrong, check the brake pressure hose, maybe you have some air in your brake lines, be sure you have enough brake fluid

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Anonymous

  • 374 Answers
  • Posted on Apr 02, 2009

SOURCE: the brake pedal now goes down to the floor have i

hi! there,check leak over the line tube you can determine when you can find an oily wet,if find replace then calibrrate you brake assembly mechanism upon removing tire on front side,remove drum brake so that you can bleed the air present on brake system
check brake fluid on brakemaster cylinderbe6425c.jpg,filled it with a good brand
of brake fluid to exact level marked on brake fluid
at the backside of your brake assembly0d8b585.jpg there drain plug to open,use open wrech for adjustment,let somebody pump your brake pedal to compressed fluid ,
until on maximum pressure,,then release fluid on drain plug,this should be done several time to purge air inside your brake system
after air purge out,adjust your brake shoe correspond what adjustment and compantible to your car where convenient to you,
take note proper adjustment and preventing your brake could avoid
you in any collision and accident.regard's and have a nice day careful while you drive.

OneRide

Gar

  • 384 Answers
  • Posted on Jun 30, 2009

SOURCE: brakes feel spongy.when pressed hard goes nearly

Either you did not bleed the brakes properly or they need adjusted. (rear only) Front most likely are disks. If you put pads on the front and spread the caliper pistons, you should pump the brake pedal 10 or 15 times to move the pistons out. Some ABS systems are notoriously hard to bleed.

litoshop

Josue Almodovar

  • 298 Answers
  • Posted on Aug 11, 2009

SOURCE: brake pedal goes down to far abs brakes

Hi I'm litoshop if you bled the system and get no results then your brake pump needs to be replaced now before replacing make sure your pads are installed correctly because if there not this to can cause this problem good luck. if this information has been useful please let us know thank you.

Anonymous

  • 53 Answers
  • Posted on Sep 23, 2009

SOURCE: 96 Chevy Cavalier brake pedal to the floor

First check your brake fluid.
Either you have a failing brake booster, or you have developed a leak in one of your brake lines. If your brake line is leaking, it should be pretty evident, i.e. oily looking substance sprayed underneath the vehicle or in the wheel wells, if the booster is leaking (the large black/silver almost bowl shaped thing directly in front of the driver under the hood against the back wall) there will most likely be fluid dripping down the firewall below it, if your brake fluid is extremely low/empty, you probably have a leak, that could be at the booster or on a line, or even at the caliper/drum. If it is empty (which can make your ABS light, light up) then you have yourself a leak. Also, if the fluid is really low, you could try adding some, although you will have air in the lines if it was low enough to floor the brake, but you might be able to find the leak if you refill the fluid and cause it to spray from the leak again. Have someone watch under the vehicle while you do this.

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Break pedal goes straight to the floor. ABS & Break light is on

the problem is in the brake master cylinder or brake system you have a problem , probably in a leaking line or cylinder and there is probably no oil in the reservoir at all
The abs light has been telling you for a year that you have a brake problem but you happily ignored that signal and put yourself and others at risk
You will be incapable of fixing this fault yourself so take it to an accredited brake shop specialist and have the job done properly
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Check & replace if necessary the brake pedal switch placed above pedals on the support.
If the problem still occurs you might access the ABS ECU (Electronic Control Unit) using diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC (Diagnostic Trouble Codes) memored.
Then you will be able to replace bad piece(s) and fix the problem by erasing all DTC stocked inside ABS ECU & reset it.
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My abs light comes on occasionally. everything seems fine, then some times I can't stop as well as I should. It seems that the abs is kicking in & it makes ticking noises in brake pedal area. It also...

There's a service bulliten about that problem with rust build-up on the front hubs pushing the sensors out of posistion [ most common on the pickups in areas that use road salt ], it happens mostly at very low speed. The best way to find out the problem is to have the system scanned.
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Sounds like there is a fault with the vacuum pump not generating enough vacuum for the brake booster assist, or a leaking vacuum hose. Try pinching off all the vacuum hoses to see if the problem goes away. Could also be a leak in the brake vacuum booster itself
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I have a 99 dodge dakota i put a new belt on it and when i went for a drive the brake went all the way down and the abs and brake light come on i have no leaks and the master is good no leaks. if you turn...

You can check to see if your brake booster is airtight. Start your truck, let it run for a couple minutes then shut it off. Push your brake pedal down a few times it should get harder to push every time you push it. Also press pedal down while engine is running then stop the enginewith the pedal still pressed down. If the pedal doesn't move after being held for a second after the vehicle has been shut off, then your booster is airtight. If your truck passes these tests then thats probably not your problem. I hope that helps you out. Let me know how it goes.
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99 ford expedition, abs light stays on, front brakes seem to be dragging

When was the last time you changed the front brake pads?
Try this:
Keep the brake pedal pressed down and start the car, after it idles for about 10 second let go of the pedal. If the light comes on just as you leave the pedal - try pumping it a few times, turn the car off and pump the pedal some more until it becomes real hard.
Then, keeping your foot to the pedal, start the car.
Idle for about 10 seconds, let go of the pedal and press it again rel fast.
If the light doesnt come on again - it means you have a leak of some sort or that the main brake pump should be replaced.

Good luck.
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ABS light and skidding on brake pedal

if you live near an autozone they will scan it for free and let you know what is wrong. one likely source of the problem is the round gear on each axle. one of them may be cracked which will cause the sensor to read improperly and make the abs come on for that wheel. the scan should tell you which wheel
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94 Plymouth Voyager ABS light stays on

Had a similar problem a number of years back. Underneath the brake pedal arm is a small switch with a plunger. when you press the pedal down it moves the plunger in and engages the brake lights. when you let off it's supposed to pop back out (turning the lights back off). Possible it is getting stuck in the down position and could need to be replaced. very easy to install and only about an 8 dollar fix.
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Jeep Cherokee ABS light is on and now no brakes

Hi laustiin,
When the ABS system fails the brakes revert to standard brakes. The ABS module will not repair this for you.
The master cylinder is not likely to change anything either.
I am assuming that the pedal is full since you didn't say otherwise.
Your problem is most likely the brake booster. pump the brakes several times with the engine off to relieve any built up vacuum. While pressing down on the brake pedal start the engine. If the booster is working properly the pedal will move slightly down then press back against your foot. If it doesn't do this replace the booster.
If this doesn't help reply with more information and I will try to help you out.
Good Luck
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