When brakes fade two things happen. From: Message: Bucket GenII 4/09/2007 11:21:04: Subject: Soft Brake Pedal IP: Logged Message: Ever since i switched from rear drums to rear disk, my brakes have been worse,you can mash the pedal down and it still creeps to a stop,so i figured maybe i got air in the line so i bled it out several times,checked everything out,all appears normal, but it still doesnt stop so well,so i took it to a. When I apply my brakes normally or hard, my brakes operate perfectly But when I apply the brakes slowly (i. The right front brake got a random signal from the ABS unit and tried to lock up for about 1/2 a second. The ABS rebuilder has graciously tested the ABS controller twice, and it works for them. I bled the front brakes, then took it for a ride. The overwhelming reason for a soft brake pedal is a system that needs to be bled. a brake or ABS light coming on, until one of the brake lines split. The main cause of these issues is the valve seats and pintles can become stuck or not seat properly due to debris, corrosion or contaminated brake fluid. The ABS is supposed to kick in when a wheel locks up, evidenced by it not turning. Brake Pedal Soft, ABS and Brake Warning Lights On 3 Answers. Brakes Check and Replacement Book your Brake Check Appointment at Kwik Fit. Take care of your car in one place. Air will compress in a hydraulic system causing a low pedal. Spongy brakes AGAIN. Make sure the nylon washers and brushing are installed in their original positions. Bled the lines and still the same. Brake Pedal Soft, ABS and Brake Warning Lights On 3 Answers. Technician A says a parking brake not fully released could be the cause. If your brakes feel spongy, fill the master cylinder with brake fluid (make sure it is the same as in the master cylinder -do not mix dot 3 with dot 4 fluid) then try bleeding the line. My brake pedal all of a sudden went soft as I was coming to a stop and my ABS and brake lights are onI still have stopping powerbut something is definitely wrongafter $300 my mechanic said he. When ABS light is off it brakes normally till the last few feet and then gives out for a few seconds but still brakes barely. The pedal is still soft and has a lot of travel. I don't think the ABS has anything to do with your problem since it only has rear abs. I have bled the system and still has the same pedal feel. Anything that increases movement, even slightly, will result in a lower brake pedal. Driving 55 M. Checked the front, all looked good. took care of other brake issue i thought, now brakes spongy, and if im at a stop light release brakes and push pedal and hold i hear air from pedal area. The BMW instructions about the diagnostic tool is related to the fact that they employ rough arsed fitters who don't have a clue who need to look for the bits they broke. Correct, there was a TSB for soft brakes - but not this issue I am posting about. It always happens at vehicle start up when I'm first taking off. It typically runs for ~20 seconds then stops. Service Brakes Problem on the 2007 FORD FUSION. unit and saw none with the limited view you get, does it have any or what else could be the problem? thanks. The abs module must be activated to move the air out of the module. Goodridge brake line kits are manufactured, constructed and tested entirely in the UK. When I redid my brakes, I couldnt get the bleed quite right, and it gave the pedal a soft feel. 2002 Ford Ranger 4wd 4. Sounds to me like the technician didn't burnish (or seat) the brake pads. I have had a rubber hose collapse and cause a spongy pedal before. Only good thing about them is that they don't generate brake dust and keep the wheels clean. ABS Module Removal & Installation Instructions ModuleMaster Support: 208-892-0764 www. I bled the brakes twice myself before. Found a video online from Fordtechmacaluso talking about this issue. The BMW instructions about the diagnostic tool is related to the fact that they employ rough arsed fitters who don't have a clue who need to look for the bits they broke. Changed master cylinder/front calipers/front pads. But now ABS & Brake light (on dashboard) stay on and the Brake pedal feels differant (soft) Brake Pedal goes further down before brakes are applied. calipers,rotors,and pads and still have spongy brakes any help would be appreceated when bleed the ABS unit on one side it bleed out good the other line it bleed out very little from ABS unit any advice would be appreceated. If normal bleeding of the brakes results in a low or spongy brake pedal, the ABS Brake Pressure Modulator Valve requires bleeding. Brake Pedal Soft, ABS and Brake Warning Lights On 3 Answers. yes, you must bleed the entire system when doing any brake work that would require bleeding, or you feel it needs bleeding, as air can get into any part and usually travels down to the caliper(s) or gets stuck in the ABS module (which can require a scantool to bleed right and air getting stuck there is rare but happens) on the 3 the brake system is not split front to back but rather diagonally. AT Restoration's Stainless Steel Brake Line Kit fits all 1995 2. Car problem(s) with the 2007 FORD FUSION. New pads, new master (bench bleed). NOTE: When any part of the hydraulic system has been disconnected for repair or installation of new components, air can enter the system and cause spongy brake pedal (2455) action. Diagnosis: * The noise is coming from the front brakes (when driving forward). my 99 1500 is having brake problems. Using a quart of brake fluid to bleed did no good to rid the spongy brakes. The front brakes are controlled separately, but the rear brakes share a common ABS circuit. Question: does the master cylinder contain a check valve/valves? When I press on the brake pedal, I see violent requrgitation or agitation in the master cylinder. Honda Accord ABS Modulator May Leak Air and Cause Low Brake Pedal - 43 reports. Got rid of my wheel jiggle and that was about it. The bad thing is you can't look at the hose and determine if it's bad. Technician A says that ABS may not result in shorter stopping distances compared to brakes without ABS. The BMW instructions about the diagnostic tool is related to the fact that they employ rough arsed fitters who don't have a clue who need to look for the bits they broke. Service Brakes Problem on the 2007 FORD FUSION. When the wheel resumes turning, the brake is reapplied. Also please check out the statistics and reliability analysis of Ford Fusion based on all problems reported for the Fu. - Wheel spin occurs, Sensor tells computer to CUT throttle and activate brake. The strength of the brakes is about the same as before, with 35 in tires, it suckslol. I replaced everything but the steel lines, including the ABS module. Mine effects pedal position at 2 different levels, not just soft brakes, but a failure of the ABS valve system. The most recently reported issues are listed below. And when I say soft I mean pedal down to 1/2 just to start braking, and almost fully down to actually stop. This action slows the rotation of a shaft, such as a vehicle axle, either to reduce its rotational speed or to hold it stationary. I recently changed my pads and after 5,000 mi. You can also do it yourself with a reasonable chance of success by slamming the brakes on while moving and activating the ABS that way. just couldn't bleed the brakes and brakes were non existent. Can there still be air in the abs controller?. I had the motor turned off and did the FL, FR, RR, RL, in that order. Brakes were too soft, so tonight I did all of them again (using two people), RightRear, LR, RF, LF. an ounce or so. i just recently bought a 2006 chevy silverado. You need to have your brakes bled. By the end, it felt like the rear brake was dragging a little. I even rear ended someone while the brakes were not working correctly. Rear Brake Shoe Adjustment. This started when I was braking at 40 mph and hit a mild bump in the road triggering the ABS to activate briefly. I recently replaced all my brake lines with the full 13 line Galfer SS brake line kit. unit and saw none with the limited view you get, does it have any or what else could be the problem? thanks. The brakes on my 2003 F150 4wd are super spongy after driving a few hundred yards. The pedal is a good bit softer than it. The major sign of neglect is a "spongy" feel of the brake pedal, this indicates moisture in the system. So they fixed all that and bled the ABS system. The brake fluid change of a week ago did not improve the spongy pedal at all. The antilock brake system or ABS require a primary and secondary bleeding to remove all air from the system. So I broke down and bought a Motive Products pressure bleeder, which is an awesome little tool. I’m guessing that the pulses in the hydraulic fluid caused by the ABS system may be causing marginal seals on the pistons in the master cylinder to let fluid pass. The only time I wasn't riding is when I lost rear brakes 3 different times (hot). The 1989 Chevrolet C/K 1500 was equipped with rear wheel antilock brakes, commonly known as RWAL. Spongy Brake Pedal. This can whip air and brake fluid into something like the foam on a latte, which makes. Now they were spongy when i bought the Cruiser and a DOE cert stating a brake imbalance in the rear. The pedal is a good bit softer than it. problem: After ABS engages, brakes go soft, and travel much further (75%) to the floor before stopping. Disc Brake Caliper - A sticking or defective disc brake caliper can cause the brake pedal to be low or spongy. Air in any of these lines can throw off this balance of pressure. The bad thing is you can't look at the hose and determine if it's bad. It has to be something in the base brake system which from the ABS valve back consists of nothing more than hard. A scan tool is only needed with a DBC-7 anti-lock braking system, and then only if air entered the ABS modulator during brake service. I have a Dodge Grand Caravan 2010, I have a spongy brake pedal only when the car is running. Re: 1996 Chevy Pickup: Spongy Brakes 05-11-04 04:55 AM - Post# 443066 In response to Big_Paul Wonder what big differences there are between the brakes on my 88 2wd pickup and my 97 K1500 Burb. I would call around to. BMW k1200 back brake spongy and warning light flashing quickly it's a 2005 model - BMW 2005 K 1200 S question How to remove servo brake ABS from BMW k1200 or. took care of other brake issue i thought, now brakes spongy, and if im at a stop light release brakes and push pedal and hold i hear air from pedal area. These days, I do one end at a time. also after a specific point its meshy/spongy to the floor. You may have a bad brake hose. In Speedy's video, at 21:26 you can hear the ABS pump running. SOURCE: Spongy brake pedal even after ABS bleed and base brake bleed. ok i need help again. There are a variety of things that can cause a brake pedal to feel spongy, such as a defective master cylinder, a twisted hard line or incorrectly adjusted rear calipers. I do not know about Tacomas, but on the Cobra if you get air in the ABS module a scan tool is required to correct that and it is typically time to take it to the stealership if that occurs. Restore the anti-lock brake system to safe, proper operation with Dorman's Anti-Lock Brake System Wheel Speed Sensor. Car problem(s) with the 2007 FORD FUSION. 7L, reman MC, new calipers, new brake cylinders, used ABS Modulator valve, three new brake lines to ABS proportioning valve, bled brakes with liters through each wheel (gravity, pedel pumping, and pressure), exercised ABS by skidding, re-bled. otherwise look for - 1997-2003 Ford F-150. Ask anyone who has replaced their brake lines and they will tell you it's worth every penny. Just the opposite in traction control The system consists of wheel speed sensors, Hydraulic units, Electronic control Brake module and a yaw sensor. The antilock brake system or ABS require a primary and secondary bleeding to remove all air from the system. Plus they last long for a quite a while. Every time I drive his MDX and I apply the brakes, I just about send myself thru the windshield. I recently replaced the master cylinder (which I bench bled before installing), front calipers, rear wheel cylinders, pads, and shoes. If you do need to remove the pump assembly, be sure you know what you are doing and know the brake bleeding procedure upon installation. Anti-lock brakes are a godsend for everyday driving, but what happens when you’re driving on a snow-covered road this winter? Does ABS actually help you stop any better? Well, it does and it. Integral ABS systems incorporate the master cylinder, power assist and ABS into one unit. ABS Brakes. It effectively transmits the vehicle's. As for spongy feeling, this could have had other causes (in the first place) - master cylinder (you replaced that - although I would still have doubt on the "known good" one that you used) - tired brake hoses (which can swallow under pressure) - worn brake discs (near or over the limit). caliper rebuild, now spongy brakes by charley240sx » Mon Jan 18, 2010 6:00 am hello there, i rebuilt my calipers in my 97 es300 yesterday, both front and rears with OEM toyota rebuild kits, flushed the system with the car off. And when I say soft I mean pedal down to 1/2 just to start braking, and almost fully down to actually stop. Having the 12V fail can cause problems with the ABS computer. 0ltr V6 Auto/ 155,000 miles Front disc/ rear drum brakes with abs. This was a fender bender and no one was hurt. its not hard to change but it is easier if you have some one help bleed it. the brakes are spongy and the pedal will often go to the floor, especially if i have to slam on the brakes which usually turns out to be an adventure (the front calipers lock up and the tires start skipping). I have found that pumping the brake helps some, but still not comfortable with how the brakes are acting. my brake and abs lights come on a lot but they arent on all the time and im not getting any codes from it even when the light it on. good vacuum on brake booster. To see how frequently Ford Escape problems occur, check out our car reliability stats. The brake stand test showed irregularity of 35% between the left (lower stopping force) and right rear brakes for the parking brake. These sport utility vehicles have undergone several problems and owners have made numerous complaints about ABS issues even on cars that were not involved in the recalled years. just couldn't bleed the brakes and brakes were non existent. MCI SERVICE INFORMATION. The block-off method shows if the cause of a low brake pedal is at the wheels or the master cylinder. VS Statesman, brakes go soft over night - bleed or ABS issue Discussion in ' VR - VS Holden Commodore (1993 - 1997) ' started by Andre_s , Jul 21, 2016. They also feel spongy. Until then, the brakes feel like they have air in them and don't retard the car too well. I just replaced my brake lines with goodridge ss brake lines and OMG it made a huge difference. If pedal is OK now, vacuum source is insufficient. It's been a while since the last time I bled the brakes on a bike and this was the first time doing it on a contemporary, ABS bike. Can there still be air in the abs controller?. 8, the brakes work fine but the pedal drops too far, I bleed the brakes twice with no improvement, then I looked for bleeders on the ABS. I don't know how the brakes adjusted or if more air is bled by actuating the ABS, but it did improve. Then did a brake bleed. Base brake system, brake hydraulics, and vacuum or power assist are all completely separate systems and should be diagnosed and serviced separately. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. If you are experiencing a hard brake pedal in your XJS Jaguar, you may need to simply add JLM9886 Mineral Oil to your reservoir or you may need to replace your Brake Accumulator. Got better but still has that spongy (not firm feeling). A soft, spongy feel in the brake pedal is a sure sign of a problem in the hydraulic system. This gives you peace of mind that each component used is of the very best quality available. The newer Toyotas I’ve driven (eg 07 Camry) had more intelligent ABS firmware and didn’t suffer this problem. can anyone chime in on the ABS system not being compatible witht the larger calpiers? i was reading on the 4-runner forum and something was mentioned about the ABS system not working properly after the Tundra upgrade because the MC and brake booster are tuned/designed with the computer to be used specifically with the stock size calipers. been all over ISSF (impy forum) to solve this nagging soft brake pedal. took it around the block, slammed on the brakes a few times and managed to get them to lock up a bit (trying to clear air from the ABS). Goodridge Brake Lines and Fittings. 7L VIN R, and I have a soft, spongy feeling brake pedal ( nothing new as I have done more brake jobs and wrenching on cars and trucks than I can think of ). thanks, i guess air must have got into the abs controller. After further investigating it was a sized near side caliper, that sorted showed up a warped disc. After the ABS activated going over a small pot hole pedal went soft. The brakes are spongy even with the engine off. the brakes are spongy and the pedal will often go to the floor, especially if i have to slam on the brakes which usually turns out to be an adventure (the front calipers lock up and the tires start skipping). But do they really prevent accidents? This is the true measure of the effectiveness of ABS systems. siezed pots, rusted back box. i dont know if its the booster or what it might be. Had the brakes power bleed. Inside your brake lines is a liquid called brake fluid, which transfers the force of you hitting the brake pedal to the brake rotors and pads to immobilise your car. I can't get the ABS to kick in at all because I'm not getting enough pressure to even lock up the brakes. Perhaps no topic has received more discussion and caused more frustration with the Tundra braking system then the proper and best ways to keep the rear brakes adjusted. Do you feel like your brake pedal feels a little bit soft or spongy? Some of the common causes to a soft or spongey pedal include: Brake fluid leaks, Worn out brake hoses, Air in the system. The only difference you are likely to experience is the different types of tools that you are supposed to use. It doies act just like a master cly with an interna leak but with the abs system being all vac. On a journey, sometimes the brakes are fine, other times the pedal sinks with very little braking effect. Study 80 ASE Brakes Pt. Quantity: 1 per Pack. 2001 Nissan Frontier 4 cylinder. Subject: Spongy, kinda soft brakes IP: Logged Message: I have a 97 CC with a 3. You need to have your brakes bled. Now they were spongy when i bought the Cruiser and a DOE cert stating a brake imbalance in the rear. , to accommodate the additional bulls needed due to increased demand. its not hard to change but it is easier if you have some one help bleed it. approaching a stop sign), the pedal will very slowly start sinking all the way to the floor; however, a simple lift of the foot and re-application will stop the car as it typically. If brake lines or hoses are disconnected at any fitting located between the master cylinder and the brakes, then the brake system served by the disconnected brake line must be bled. I don't think the ABS has anything to do with your problem since it only has rear abs. If the car's off, it's really nice and firm (obviously), but when it's running, it's so soft the car is actually somewhat difficult to stop. Got rid of my wheel jiggle and that was about it. I have power bleed the system and the system is about the same to a little worse. First things fist; The master cylinder was replaced back in '07, and the RABS valve was just replaced a year ago. Having this 'soft' nature - isn't necessarily a bad thing. The system combines the ABS module with the primary brake system and also includes a combination valve and an isolation-dump valve. SOURCE: Spongy brake pedal even after ABS bleed and base brake bleed. Can there still be air in the abs controller?. Air will compress in a hydraulic system causing a low pedal. Make sure the nylon washers and brushing are installed in their original positions. Replace as necessary due to visual failure. The Electronic Brake Traction control module uses wheel speed sensors to tell it if a wheel is rotating faster than the other wheels. Most of the time, a correctly done brake job needs no bleeding at all, if only doing the rotors and pads. Restore the anti-lock brake system to safe, proper operation with Dorman's Anti-Lock Brake System Wheel Speed Sensor. Spongy brakes AGAIN. Page 120 Universal Master Cylinders. How To Diagnose a Spongy or Soft Brake Pedal. New pads and rotors in the front. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. hopefully you guys can help me out. Poor pressure can result in more time, distance, and/or effort to stop. I bled the front brakes, then took it for a ride. The abs module must be activated to move the air out of the module. Nothing else was changed. Update: I finally resolved the soft brake issue. Since i have gotten my jeep it has had a soft brake pedal. Rotors The rotors on the seventh-generation Accord have a good reputation with technicians. This was a fender bender and no one was hurt. mine feels that way too and i havent touch the brakes on my 2012. I agree to receive text messages from BOBBY'S AUTO SALES representatives and understand that no consent to texting is required for purchase of products or services. ABS works by rapidly pulsating the brakes vis solenoid activated valves in the hydraulic lines (contained in the ABS modulator). dealer said the brakes are normal ( i expected that from this dealer) but have read up on the issue and found a recall on the odyssey about the same issue and culprit is the ABS modulator that lets small amounts of air into the system. When I did that, it didn't affect anything. View The ABS Power Brake Copperhead Install Video. When depressing the brake pedal the truck starts slowing and the further you press it the more it stops, but the pedal travel goes way down low. I know I need to bring it in, and plan to. I'm starting a group buy, check out the link in my signature. So new pads and discs (rotors) still the same. I had good brakes firm pedal, pedal only moved about 1/3 distance to floor to attain firm solid braking action. The strange thing was, it was only one side that was locking up. For the 1998 and earlier Mustang ABS systems, there are NO Special Procedures or Considerations in bleeding the system. Easy to use parts catalog. Recently, the brakes on this car began to fade about halfway through the pedal travel, then firm up. It has to be something in the base brake system which from the ABS valve back consists of nothing more than hard. Then, inspect the fuses, the ABS controller and the wheel speed sensors. Brake fluid may also contaminate the surface of the rotor and/or brake pads, leading to further problems. the other day we were going out kayaking, and the. I finially tried to crack the flair nuts in a junction, just below the master cylinder, while pumping, and that did the trick!!. I understand the Subaru Select Monitor tool can be used to force the ABS pump to cycle. When the wheel resumes turning, the brake is reapplied. Page 119 Power Brake Boosters & Master Cylinders. Let me list what I have done so far. It's been happening for about maybe a month now :( and started happening when day time temperatures couldn't even reach zero. The proper way to use anti-lock brakes is to never pump the brake pedal during an abrupt stop. Im running a stock 01 burb master on mine with the same front brakes as you and 85 K10 rear calipers and it has a great pedal. Any info atall on this would be greatly appriciated. Visual inspection of all base brake components - hardware, bolts, rotors, pads, soft and hard lines, shoes, drums, wheel cylinders, etc. It may be necessary to bleed the system at all four wheels if a low fluid level allowed air to enter the system, or the brake pipes have been disconnected at the master cylinder or combination valve. They prevent wheels from locking up and provide the shortest stopping distance on slippery surfaces. Light coming on could be due to low brake pads destroyed by the paste that's been grinding them down every time you press the pedal, or as you say a leak somewhere. This may be caused by the original brake caliper piston material. Goodridge brake line kits are manufactured, constructed and tested entirely in the UK. The strength of the brakes is about the same as before, with 35 in tires, it suckslol. The last few day I noticed that intermittently the brakes go ineffective again but usually a few quick pumps brakes return to normal. The 1989 Chevrolet C/K 1500 was equipped with rear wheel antilock brakes, commonly known as RWAL. Do anti-lock brakes really work? Anti-lock brakes really do help you stop better. dealer said the brakes are normal ( i expected that from this dealer) but have read up on the issue and found a recall on the odyssey about the same issue and culprit is the ABS modulator that lets small amounts of air into the system. The brakes including the ABS work very well - just this strange spongy feel when you sustain pressure on the pedal while running. So now I know it's a brake issue. Application. But when I brake and lift off not all the way and push it in more the light comes on. also you never push back the calipers with the bleed screw closed. Honda Accord ABS Modulator May Leak Air and Cause Low Brake Pedal - 43 reports. However brake wear indicators are also useful for brake pads in industrial applications, including wind turbines and cranes. Choose top quality brands A1 Cardone, AC Delco, Dorman. Suzuki Brake Pressure Sensor Problems The MK60 ATE Teves ABS pump is fitted to a wide variety of vehicles from all makes of manufacture and includes the Suzuki group vehicles. He has to have the proper software to "talk" to the brake system & open up the ABS for bleeding. Most brake problems are not ABS related. I bled the brakes a couple of times and still had a soft pedal. Both places claim to repair your EBCM for about $150 or sell you a reman'd one for $300. That's normal. 2005 Sprinter Brake pedal falls away or soft. That will purge out the air. See Kents YouTube video on ABS brakes. ABS issue 2 Answers. I had Stop Tech Cryo with hawk HD brakes on and they worked ok but when they get hot the brakes stray and get into the ABS to many times. I have concerns with the brakes. This morning again, the brakes don't feel as spongy but I bet you they act up before the day is done. It felt just like a line had let go, soft pedal, weak brakes. My brake pedal all of a sudden went soft as I was coming to a stop and my ABS and brake lights are onI still have stopping powerbut something is definitely wrongafter $300 my mechanic said he. I have also been chasing the soft pedal for many yearsI found a patch of ice nearby after a recent snowfall and was able to actuate the ABS quite a few times. this ABS thing makes TOTAL sense to me my ABS light has been on for a while even after replacing the harness and all 4 sensors. See Kents YouTube video on ABS brakes. Now, there seems to be some air trapped in the ABS/ESP- accumulator system. If the parking brakes or the self adjusting mechanisms on the rear brakes are not working, then you will have a spongy brake, even in the front. Took it to Ford and pointed them to the HCU to fix pedal but they replaced master cylinder. I was unaware of this work. I understand the Subaru Select Monitor tool can be used to force the ABS pump to cycle. Spongy brakes are a result of air getting into the brake system, which can happen from leaks in the. Technician B says that the Abs unit is malfunctioning. com Chevy Venture support the heavy pump assembly so you don't kink the brake lines. Im running a stock 01 burb master on mine with the same front brakes as you and 85 K10 rear calipers and it has a great pedal. calipers,rotors,and pads and still have spongy brakes any help would be appreceated when bleed the ABS unit on one side it bleed out good the other line it bleed out very little from ABS unit any advice would be appreceated. The pickup only has rear wheel antilock, I guess the Burb has 4 wheel A/L. I was told the ABS sensor, calipers, rotors, and pads have been replaced. The brakes have been inconsistently spongy ever since, and not consistently spongy rendering the brakes unpredictable as well as intermittently unresponsive. When I push on the brake pedal it feels like it has an inch or 2 of play before it really starts to squeeze the brakes together. I serviced my brakes with new pads and rotors when I hit an issue with a soft pedal. Tip: Use your trusty multimeter to check continuity through wheel speed sensors. After bleeding the brakes, your pedal will still be somewhat spongy. It is a stand alone system that only gets input data from the brake light switch, wheel sensors and system power. Bled the lines and still the same. " And you base this observation on what?. Brake pedal is spongy Inspection Service When you press your brake pedal, it should feel firm and solid. Nothing working. Shop tires, parts and accessories or schedule your oil change and repair services today. Attached to the master cylinder is the hydraulic modulator and motor pack assembly. I've got an 03 Z71 with the JC3 brake code. If you have spongy brakes the reason is that there is air in the system. But since I have zero experience with ABS I need to know if this is an ABS thing or do they really need to be bled. A few simple tools and an understanding of the system are required for finding the cause of a low brake pedal. 4 wheel disc. I have managed to bleed all the brakes using a pressure bleeding kit and fo. But every now and then, the ABS kicks on and I'm wondering if the air in the lines causes that to happen. 2) Check out master cylinder 3) Possible ABS issuewill probably take to garage for that one. I suggest you complete all the usual checks before attempting replacing master cylinder. Check for at least 15 in Hg. So I plan on taking it back to the shop next week and see what they say. The BMW instructions about the diagnostic tool is related to the fact that they employ rough arsed fitters who don't have a clue who need to look for the bits they broke. According to Ford TSB 91-20-8, changing to phenolic piston. Its rear brakes would usually grab and lock up the first few stops after it had been parked, but I never noticed the ABS kicking in. Brake fluid absorbs moisture from the air and that changes the brake fluid dynamics over time. The 2007 Honda Odyssey has 10 problems reported for brake pedal is soft. Chevy Silverado 2003, Front ABS Wheel Speed Sensor by Dorman®. Changed master cylinder/front calipers/front pads. To see how frequently Ford Escape problems occur, check out our car reliability stats. If your truck has an antilock brake module in it, and that ABS module has air bubbles in it, you will have. i just recently bought a 2006 chevy silverado. Why do my brakes feel soft after a hard brake? By Product Expert | Posted in Safety, Service, Tips and Tricks on Monday, October 17th, 2016 at 9:42 am.