I have a 2009 Eclipse GS. When he was done the pedal was very soft. Master Cylinder: if this part is faulty then it will be very obvious. Also be sure to check brake pedal free-play after replacement or adjustment to any brake switch. Top Power Brake Booster Questions The brake pedal is low and spongy. When we get in our semis and straight trucks to haul grain, we are glad when we hit the brake peddle to stop and we stop. Here are a few of those warning signs so you can determine if a potential problem with your vacuum brake booster check valve exists. Can hear air leak from around mc/brake booster area. Brake fluid absorbs water if exposed, so the systems are to remain sealed. I did not step long and hard on the brake pedal when bleeding. Start engine, pedal should fall slightly. Whether in stop-and-go or emergency braking, ATE Brake Boosters provide drivers with the ability to effectively engage their brakes, even at low pedal force, according to Continental. Most brake boosters are vacuum controlled, so a special vacuum measurement device that connects to the brake booster is needed to. No Pedal with New Master Cylinder Installation – Quick Fix or Check? See more from Wagner A “no brake pedal” condition can be encountered after a new master cylinder is installed, leading the technician to believe that the master cylinder is defective. I'm well over $ 1000 into this repair and the brakes still don't work right. If the brakes loosen up after that, you know your problem. I like to replace brake fluid in all my vehicles every 24 months. It is supplied with engine vacuum and assists the driver in applying the brakes. Figuring it was due to the pad change he bled the front brakes, no problem. If you feel that your brakes are low, pump the brake pedal a couple of times as you drive around. Do not disconnect the vacuum line from the booster. brought vehicle into shop and checked over, pedal is soft, if you pump it several times, it holds breifly and then fades away, the rear brakes were junk, there were chunks out of the rotors, replaced rear brakes, there are no lines leaking on vehicle, replaced the master cylinder with a napa master cylinder. Then inspected front disk brake pads, needed replacement. Release brake pedal and measure distance to floorboard. Bedding the brakes in will improve the feel, but replacing pads will make the pedal a bit squishier as when you push the piston back it stretches the seal a bit and the piston moves a bit more than it used to. after the abs activated the brake pedal was very soft and when trying to apply my brakes the brake pedal traveled all the way to the floor. Pulled the 99 out after sitting for for about 4 or 5 months to drive it a little and it had a really spongy pedal. Leaking brakes will also cause the brake warning light to come on, says Hovig Manouchekian, operations manager with Funk Brothers Automotive in Hollywood, California. If you have determined it's not you power brake booster, think about purchasing an OTC Vacuum Brake Bleeder. Master Power Brakes recommends that the distance between the pin from the booster and the hole in your master cylinder be approximately 0. I have a 2008 Dodge Grand Caravan. HYDRO-BOOST TROUBLESHOOTING High Pedal and Steering Effort (Idle). ) Specification 6– 10 (0. Inspect the Check Valve. Have an assistant pump the brake pedal (BP) (2455) and then hold firm pressure on the brake pedal. Re: Brake pedal goes to floor even after replacing master cylinder (vw-gti_1987) 03-28-2009 02:42 AM #10 Ok, may be a stupid question here, but I have seen it before (when I changed out my firts master cylinder). Repair any leaks, Re bleed system and re test by following step 6-8. Also did not disturb the hydrolics. If the brake pedal does not drop, the vacuum system (vacuum hoses, check valve, etc. Can anyone help? BTW, sometimes the pedal will be high and firm, then sometimes it will go back to low and soft. On the last hit keep your foot on the brake pedal. First check the clutch reservoir for fluid which is near the firewall on the driver side engine compartment by the brake master cylinder. booster by pumping the brake pedal several times. Order now!. Decided to change out the pads and rotors. Thanks guys. The most common issue is the rod that comes out of the front of the brake booster and pushes the piston of the master cylinder. Spongy brakes are when the pedal has a mushy feel to it that seems to go away after pressing it multiple times at once but comes back after laying off the pedal. If the power brake booster is not functioning properly, you will notice problems such as the brake pedal being very hard to press, and the vehicle taking longer than normal to come to a stop. When he was done the pedal was very soft. After replacing master cylinder and still having the problem I decided that it could only be the brake booster so I replaced it, bled the brake lines one more time and it finally fix the soft pedal. operated without refilling the master cylinder brake fluid reservoir, the driver will begin to notice a spongy or soft brake pedal feel and braking performance may gradually decline. If the pedal gets harder to press, then there is no hose leak. In both cases, you'll need to replace the pads and most likely rotors. Power booster from a 1/2 ton suburban. A “soft,” or “spongy,” brake pedal describes a situation when the brake pedal does not have that firmness. This is unsafe and will not pass inspection. If the pedal does not drop after holding the pressure on the pedal for 30 seconds, the booster is airtight. If you experience a brake pedal that goes straight to the floor with little or no resistance, you can quickly pump the pedal to build pressure. Apply and release brake pedal. Grumpy, when you replaced your booster, did you leave all of the other brake components intact and replace the booster without having to rebleed the system?. this is unsafe and will not pass inspection. The second we turned the engine on the pedal was very squishy. com as How to Replace a Vacuum Brake Booster. Ok FoxRod, I was speaking from experience about another car I owned with 4 wheel disc brakes Whether or not it is front or rear brakes sticking, if both are disc (which it is on the Mustang), it is very likely that some one who was selling the car replaced their ****ed front pads with new ones with out turning the rotors or replacing them. Another possible reason for a hard pedal could be the combination valve and in particular the Pressure Differential Valve within it. After replacing every brake component, master cyl twice, power brake booster, abs module, soft brake lines, calipers all around, rotars, pads, brake pedal, bleeding until I was blue in. Some pads come with a soft metal shim, or with some composite shim material attached to the back of the pad to dampen the vibration. Spongy brakes are a result of air getting into the brake system, which can happen from leaks in the. 3 common causes of a soft pedal. I wound pistons using wind back tool, aligned lug on the pads to pistons correctly and cleaned sliders. Low Pedal and Soft Brakes Problems. If the booster isn't of the proper size, proper assist can't be provided and the pedal will become hard due to the fact that the system is tapped out. So, check the brake fluid level and fill if necessary. Brake problemsI have a 1971 Chevy C-10 pick-up. did not like the first three-four pump ups to build somewhat pressure. The problem is a soft brake pedal that will not hold a firm brake when the brakes are applied. He said the brakes feel normal, but I refuse to believe they are "normal". Does the pedal feel spongy or is the pedal travel too far when pushed? What does the pedal feel like when the truck isn't running?. Check fluid levels in both reservoirs frequently during the bleeding process to prevent air from entering the system. In truth, this is a video about how to replace and bleed a master cylinder on a C1500, 1990 5. out your Chevy after a long and cold winter storage. On my VW Eurovan, I had the brakes bled and new brake fluid flushed during State inspection - and about a month later I had soft pedal. The average brake booster replacement costs. It is the adjustment of the Booster pushrod which makes contact to the primary valve in the master cylinder. [Excerpts from "Low Pedal Blues" by Bob Freudenberger, Motor Service magazine, Feb 00 ] You can find out all you need to know about the master cylinder by removing the lines, screwing brass or plastic plugs (either ISO or double flare) into the outlets, then applying the brakes. If I pump the pedal they will get firmer. If the pedal is hard right off the bat, you'll need to diagnose the problem further. 031000 service brakes, hydraulic:pedals and linkages Summary: Ford: some vehicles will experience, from brake booster, a grunting noise during first portion of brake pedal travel and high vacuum conditions after replacement of brake booster. I followed the correct procedure for bleeding, and there certainly was a lot of air in the lines, but I noticed that there wasn't much pressure coming out of the rear after pumping the brakes and opening the bleeder screws. Mechanical problems that cause a low brake pedal. Here we'll discuss how to replace your master cylinder in the Toyota Camry. Owners of the involved vehicles will be notified by first class mail beginning in early November 2010. Power brake booster failure is fairly rare, we do not change them often. Ok FoxRod, I was speaking from experience about another car I owned with 4 wheel disc brakes Whether or not it is front or rear brakes sticking, if both are disc (which it is on the Mustang), it is very likely that some one who was selling the car replaced their ****ed front pads with new ones with out turning the rotors or replacing them. can it be the adjusting rod in the brake booster going to the master cylinder when brake pedal is pressed. Have your brakes checked by a Certified Safety Expert to confirm the requirement for repair. The Toyota dealer advised replacement of clutch pedal bushes. I have all NEW hardware on all four corners. After replacing it, if the locking up isn't resolved, you should at least have a normal pedal. Also, see repair breakdown by problem area and cost. Mine effects pedal position at 2 different levels, not just soft brakes, but a failure of the ABS valve system. Since i have gotten my jeep it has had a soft brake pedal. Page 1 of 3 - Brakes squishy even after bleeding twice - posted in Virtual Mechanic: I am going to try bleeding all the brakes more but I was wondering if anything else could be the factor. Not only is a soft pedal annoying to deal with, but also it can be a safety hazard. Hey All, While moving a friend my brake pedal got super soft and went, practically, to the floor. After changing all this I had a very soft pedal. Having said that, if the fluid is old and contaminated, it can reduce pedal feel. i needed that special tool and figured out a way to get it out. At this point, the pedal becomes hard as the booster has done all it can but the vehicle still needs more. In fact, before the brakes were ever bled, they were very soft and now they are actually pretty good, but still not as good as our Enclave which is what I am using as a base point. Ive only owned it a little over a year but as long as Ive had it the brakes have been very soft, I have to push the pedal nearly to the floor for anything to happen. Things I checked:. The diagnosis is typically either a faulty vacuum pump or a faulty booster. Loosen the disc brake caliper bleeder screw until a stream of brake fluid comes out. Bleed and flushed brake fluid. I know I could go with an adult tricycle, but would prefer 2 wheels. I even replaced the slave cyl in front of the booster with a new and still same. It felt to me like the primary hydraulic circuit (For lack of a better word) was bleeding through and the secondary was still properly holding pressure because, although the pedal bleeds through and almost hits the floor, I can still get stopped. Power brake booster failure is fairly rare, we do not change them often. Pedal still soft. -Insufficient brake valve delivery pressure. The best way to accomplish this is by installing a dual master cylinder and power brake booster system. -Low air pressure in the brake system (below 60 psi). A brake inspection indicates a leaking wheel cylinder that has soaked the brake shoes with brake fluid. If the pedal is hard right off the bat, you'll need to diagnose the problem further. It does stop and it's not terrible but am sick of the low,soft pedal and pretty much after all of the $$ I spent it's no better Just VERY annoying. After that the brakes go back to being soft and not working. Look at the brake backplate, behind the wheel and drum. Hello All, I recently purchased a 1998 z-71 that was experiencing the soft brake pedal issue. Spongy or Soft Brake Pedal. Had the master cylinder replaced and it is still acting the same. If the pedal does not gradually sink towards the floor as you continue with constant pressure on the pedal then the MC is more than likely OK. If there is no change in the pedal reserve travel after holding the pedal for 30 seconds, the booster is air tight. Nissan Infiniti G35 Brake Problems – squealing, fast wear out due to defect September 9, 2010 Trueler 227 Comments Front brakes on my Infiniti G35 2003 started to produce excessive squealing and it was the time to change brakes again. Loosen the disc brake caliper bleeder screw until a stream of brake fluid comes out. Replace master cyl. After replacement brake pads have been installed, ride with extreme caution until the new pads have 'broken in'. Discussion in 'Dodge Nitro Mechanical Problems and Questions' started by Steven Blacker, Aug 20, 2019 at 12:54 AM. Get that special bleeder kit on ebay (below). Typically, this is caused by either a lack of brake fluid or a fault in the master cylinder. org, is the worlds largest automotive enthusiast group exclusively geared towards the General Motors GM J-car platform including the Chevrolet Cavalier, Pontiac Sunfire, Pontiac Sunbird, Pontiac J 2000, Oldsmobile Firenza, Buick SkyHawk and Cadillac Cimarron. as necessary, and replace mas-ter cylinder cover. REPLACE BAD HOSES Inspect ALL power steering hoses. Replace your brake pads as soon as possible. The old original single cylinder master cylinder did its job. Still no air from any of the 4 wheels. If you feel that your brakes are low, pump the brake pedal a couple of times as you drive around. Disconnect the vacuum hose from the following locations (see Figures 2a and 2b): Air cleaner outlet pipe – for vehicles equipped with an aspirator. The brake booster works similarly to a common vacuum operated power brake booster with the exception that the vacuum is originated by a pump rather than via intake manifold vacuum. After replacement of yaw rate and acceleration sensors (Airbag Sensor Assembly), perform zero point calibration Reminder: When U0123/62 and/or U0124/95 and and/or C1336/98. Models 2011-2014 edge, mkx. never felt good about pedal travel. I just replaced my pads and did not touch the brake fluid or did anything with the bleeding. Thus, causing the pedal to get soft and doughy or slowly sinking to the floor. Had the master cylinder replaced and it is still acting the same. Two technicians are discussing vacuum brake boosters. After diagnosing the system it was found that the brake booster was defective. Soft Brakes After New Pads And Rotors. With engine running, turn steering wheel until lightly against steering stop. On a brake system that does not have a power assist, the brake pedal is directly connected to the master cylinder. This process is a bit more involved and does some sort of checks/tests as well as a "linear valve offset relearn" procedure. HYDRAULIC BRAKES 4A– 7 DAEWOO M-150 BL2 BRAKE PEDAL FREE PLAY INSPECTION 1. But usually when that goes it is a hard pedal or pedal to the floor and barely able to stop. just unbolt the M/C from the booster leaving. You will find that the brake pedal height will be about 2 inches lower when the engine isn't running, or without the lines connected, as compared to a "powered up" pedal height. Problem: When I redid the front brakes on my front-wheel-drive car, the brake pedal doesn’t “feel” right. If this distance is greater than 0. The Chevy Silverado 1500 came stock with a vacuum operated brake booster. The PB was leaky and eventually completely failed. Start the engine. 6 million models due to a faulty brake. operated without refilling the master cylinder brake fluid reservoir, the driver will begin to notice a spongy or soft brake pedal feel and braking performance may gradually decline. Brake pad rattle can also be caused by lack or the appropriate claw clip on the pad reverse. brought vehicle into shop and checked over, pedal is soft, if you pump it several times, it holds breifly and then fades away, the rear brakes were junk, there were chunks out of the rotors, replaced rear brakes, there are no lines leaking on vehicle, replaced the master cylinder with a napa master cylinder. Soft Pedal Solved - 2013 Odyssey My solution - Threw away my new ceramic pads and replaced with semi-metallic pads (which are not easy to find now). I can feel the shifter going into gear through the clutch pedal; it makes this quick vibration/buzz feeling through the clutch as the gear is engaged. If the brake fluid is low, you can fill it and then pump the clutch pedal, or bleed the system, like you would brakes, to remove any air. If your car has not had a brake fluid change in the last two years, bleeding is also a good opportunity to change the fluid. Hey all, I got a 2000 S10 Blazer 4x4, 4. But usually when that goes it is a hard pedal or pedal to the floor and barely able to stop. The following is a guide on how to replace a brake master cylinder. To replace the old brake cylinder, use only new master brake cylinder from a safe car parts maker. Power booster from a 1/2 ton suburban. a day ago as i was driving my 2013 ford edge, i noticed that it took more effort to press the brake pedal and went almost to the floor. Had the brake booster replaced. If you feel grinding, your brake pads are worn down and need replacing. Brake Rotor & Disc Issues. Next we would release the line block at each wheel, one at a time. hello, 2006 f150 5. But another problem arose. You need to spend some time to get it right if you want your brakes to operate properly so once you replace the wheel cylinder make sure you take some time and adjust the shoe clearance properly before you call the job done. New front lines, pads, rotors, rear shoes, rear cylinders, drums, springs, adjusters, and levers have all been changed. I have no lights. Replaced the master cylinder, front calipe, brake booster, and brake still have no brake pressure at alll. He said the brakes feel normal, but I refuse to believe they are "normal". All air brake systems use air pressure to apply the brakes when you step on. Some or all of the squeeling comes from the brake pads oscilating and rubbing at a high frequency against the brake caliper, especially if the rotor is the tiniest bit out of round. My mothers 99 4runner and fathers 04 Tacoma feel night and day compared to my truck. If there is no change in the pedal reserve travel after holding the pedal for 30 seconds, the booster is air tight. So finally I took it into the dealer. Brakes Spongy After Pad Change the soft feel comes from air in the system compressing when you push the pedal. 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. next?? Any info would be great. The contact owns a 2005 Toyota Sequoia. If you feel that your brakes are low, pump the brake pedal a couple of times as you drive around. Technician B says to clean the brake assembly. I can't seem to get rid of my spongy brake pedal. 3 Liter Diesel, A/T, A/C Okay I hope someone could help me out on this problem, the brake pedal gradually sinks to the floor while the truck is running while stepping/holding down the brake pedal, then the red brake light comes on in the instrument cluster. Frequently this is caused by the brake fluid reservoir dropping below the level of the hose which goes from the brake reservoir to the clutch master cylinder. My mothers 99 4runner and fathers 04 Tacoma feel night and day compared to my truck. Get your new BMW 3-series E36 brake booster. a soft brake pedal can also be a bad master cylinder. The vehicle was able to be pulled over and stopped. Any have this problem. ISP continues after second master cyl. To replace the old brake cylinder, use only new master brake cylinder from a safe car parts maker. test the booster before replacing it id rather not have to throw around 95$ for a booster if i dont. A1 Cardone Brake Booster With the A1 Cardone brake booster, slowing down the vehicle or bringing it to a halt can be so much easier as it helps increase the force exerted by the brake pedal in the master cylinder. Hi: Master cyl replaced twice because of intermittent soft pedal (ISP) after first replacement. Have an assistant depress the brake pedal slowly one time, and hold. If the brake pedal goes down farthest the first time and then gradually rises on the 2nd and 3rd press this indicates an airtight brake booster. REPLACE BAD HOSES Inspect ALL power steering hoses. I have a 1997 Dodge Ram 1500 2wd that I've owned since new. Somehow the brake pedal stayed soft. This did not affect the drag, still dragging exactly the same. I have bled off the Chevy's brakes after the replacement of the line. The brakes are new just replaced. Correct, there was a TSB for soft brakes - but not this issue I am posting about. If After replacement fix. Power Brake Booster Removal i was at a gtg and was doing my booster. The J-Body Organization, j-body. Brake fluid doesnt compress, but the air in the. NOTE: Pedal free play should be 1/16" to 1/4". the brake pedal. I even replaced the slave cyl in front of the booster with a new and still same. The link by FXTIam has a very good description of the procedure. Typically the vacuum brake booster check valve is not inspected during routine maintenance, but there are times when this part can show signs of wearing out or that the booster check valve has failed entirely. How about excessive pedal travel: Leaking MC (probably internally). For shops it is a difficult phenomenon to explain. I just replaced my pads and did not touch the brake fluid or did anything with the bleeding. The problem is a soft brake pedal that will not hold a firm brake when the brakes are applied. Is this a bad brake booster? Dealer has no idea what the problem isstill not fixed properly. Discuss it at Forum Download This TSB. Ok, so I recently bled my brakes because I had to disconnect the rear passenger line in order to replace the trailing arm bolt. There is no need to bleed the brakes after replacement either. On the last hit keep your foot on the brake pedal. It is supplied with engine vacuum and assists the driver in applying the brakes. Front brakes are fine. You need to spend some time to get it right if you want your brakes to operate properly so once you replace the wheel cylinder make sure you take some time and adjust the shoe clearance properly before you call the job done. soft brake pedal after changing pads I changed pads and rotors front and back today, blead the brakes a few times, and have a soft brake pedal. if replacement brake fluid is used that does not contain such polymers, or that contains only small amounts, a part of the rubber seal located at the rear of the brake master cylinder may become dry, and the seal may curl during movement of the. Maintenance and Adjustment Brakes Breaking-in New Brake Pads and Discs Brake Wear Inspection After replacement brake discs and/or pads have been fitted to the motorcycle, we recommend a period of careful breaking-in that will optimise the performance and longevity of the discs and pads. I bled the brakes three or four times with no affect. In some instances the car is virtua;;y undriveable, and the rotors and rims are. Still no air from any of the 4 wheels. So, I am not sure if the problem is more likely the booster or the calipers. This system uses engine vaccum during intake stroke to evacuate the air in the chamber. The shoes are virtually new and the drums are in excellence condition. So finally I took it into the dealer. Yeah,I did replace the Power Brake Booster ALONG with the master cylinder. Technician B says that there should be at least two power-assisted brake applications after the engine stops running. With the engine off and after bleeding the brakes the pedal feels nice and stiff. Maintenance and Troubleshooting. Discussion in 'Dodge Nitro Mechanical Problems and Questions' started by Steven Blacker, Aug 20, 2019 at 12:54 AM. 58000 mi: Brake recall, part repaired, TSB was done before, brakes feel much better after recall done (brakes bled as well under TSB) 71000 mi: Recall was redone due to brakes becoming very soft again. To engage the parking brake, I have to push it down a lot more than usual. Power booster from a 1/2 ton suburban. The reason why I do not think it would be a brake booster is that when they fail the pedal gets hard, not soft, because you now lack the power assist of the booster and have to depress the pedal entirely with your own strength. Any thoughts?. can it be the adjusting rod in the brake booster going to the master cylinder when brake pedal is pressed. The best way to accomplish this is by installing a dual master cylinder and power brake booster system. Should rotors be turned when replacing pads? I have a soft pedal, how do I cure the problem? Why does my pedal "fade" or "go away" after my brakes get hot?. Hi everyone, I have just purchased a set of Bendix brake pad (DB1431) for my ZZE122 rolla and got it done this afternoon. Recently it failed inspection due to the brakes. If your brake pedal does not maintain a firm and responsive feeling, a problem is present and your vehicle may not stop in a safe amount of time. First check the clutch reservoir for fluid which is near the firewall on the driver side engine compartment by the brake master cylinder. Brake pads dragging after change It's not enough that I'm getting a noticeable drop in fuel economy, although I can see it boost harder off the line and coasts to a stop a little faster than usual basically drives normal though and the wheels don't get any hotter than they did before. Brake vacuum supply hose. Brake pads with a smaller and constant coefficient of friction do not lose efficiency at higher temperatures and are stable, but require higher brake pedal pressure. Dragging Brakes, MASTER CYLINDER FAULT #1 - BT-101A There has been a recent run of a particular fault in a new replacement part master cylinder. Connect brake failure warning switch lead to master cylinder, if so equipped. 0T, Volkswagen Golf V 2. TATA Motors Xenon Owner's Manual & Service Book Side Air Vents Horn Pad Accelerator Pedal Brake Pedal Clutch Pedal Music System 10. After stopping the disc heat dispersion on the left felt warmer then on the right (i did not touch the disc to see what degree of burn wound i would get) I have to get the brake pads out but it seemed that left was worn more than right. I did the same on my F150 after changing the calipers. More Ford Edge Brake Pedal and Linkage Service Bulletins of Other Model Years. The problem your having could be one of several things, air in the system somewhere, bad master cylinder, power booster. Do your current Jeep brakes have enough, or are you worried every time you step on that brake pedal? Aftermarket brake conversion kits can eliminate that worry and provide plenty of bite - all while reducing heat, noise and dust. More Ford Edge Brake Pedal and Linkage Service Bulletins of Other Model Years. The problem is a soft brake pedal that will not hold a firm brake when the brakes are applied. Soft Brake Pedal with no apparent cause. Good fluid level and no apparent leaks. After replacing one of the calipers because I over pumped the brakes with the calipers off the rotors and popping one of the pistons right out, my pedal got really mushy. Get your new BMW 3-series E36 brake booster. next?? Any info would be great. 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. After i pass this point the pedal. After replacement power brake operation was fully restored and he was able to stop the vehicle with minimal pushing on the brake pedal. Replacing the leaking brake booster vacuum hose. So I have replaced almost everything on the brake system. Now after bleeding both fronts the pedal is still really bad. i have heard before vr brakes arent that good. Spongy or Soft Brake Pedal. 1978 - 1996 Big Bronco - Replaced Brake Booster and Master Cylinder and now have no pedal - Hi all, As the title says, I just got done replacing my brake booster and master cylinder with a new one. Automatic clearance adjuster check is performed after removing brake drums. There are only two methods left: The first is to use one of the pricey brake bleeding tools that literally pumps brake fluid backwards through the system to force the air bubble into the brake fluid reservoir. Pressure brake bleeding is the best way to make sure you get all the air out. Repeat the sequence, including the 15 second wait, until all air is removed from the bore. 3 Liter Diesel, A/T, A/C Okay I hope someone could help me out on this problem, the brake pedal gradually sinks to the floor while the truck is running while stepping/holding down the brake pedal, then the red brake light comes on in the instrument cluster. ) even after replacement of brake shoes and bleeding of the brake system, other possible but infrequent cause is malfunction of rear drum brake shoe adjusters or booster push rod length out of adjustment. S60 No Pedal after Changing pads & rotors Post by S60 Blues » 01 May 2010, 07:43 So this seems to be a fairly common complaint, A soft or spongy pedal after replacing pad and or rotor. Mercedes-Benz C-Class: Why is My Brake Pedal Soft? Your braking system uses fluid pressure to create friction between your brake pads and rotors, slowing down your vehicle. 9) If pedal feels firm remove one clamp and press the brake pedal. See real-world Kia Sorento brake problems and repair histories as reported by other Kia Sorento owners. The only issue is the pedal is soft and it goes further down. Last concern is proper adjustment of the brakes, especially the rear brakes. Brake pedal travel is excessive if the pedal reaches the floor before the brakes lock, and you need to pump the pedal to restore full braking power. Ok FoxRod, I was speaking from experience about another car I owned with 4 wheel disc brakes Whether or not it is front or rear brakes sticking, if both are disc (which it is on the Mustang), it is very likely that some one who was selling the car replaced their ****ed front pads with new ones with out turning the rotors or replacing them. While someone presses the brake pedal, and the bleed screw is loose, if a nice pee stream of brake fluid doesn't come out, there is an obstruction in the brake hose. Replacing the brake booster will fix this problem. Tighten the connection and then slowly released the brake pedal. This will cause your soft pedal. So, check the brake fluid level and fill if necessary. Took into a Ford dealer for repair - brake booster was replaced. Now I have soft pedal, low pedal, pedal would travel all the way to the floor with steady foot. A brake pedal that is functioning optimally should feel firm, as if it has a tight hold on the brakes. First I would replace brake fluid. ) This rod is often slightly too long and causes a pre load on the master cylinder. Before I get under there an bleed them all again, is there anything else I need to check?. Most manually adjusted drum brakes have a single adjuster, but some — especially if they are on the front wheels — have two. I can't seem to get rid of my spongy brake pedal. The best way to accomplish this is by installing a dual master cylinder and power brake booster system. After that the brakes go back to being soft and not working. Also with the car off it feels nice and after a couple of pumps it's rock hard. He replaced master cylinder twice, brake booster, and brake proportioning valve. This sirted the problem. After replacing every brake component, master cyl twice, power brake booster, abs module, soft brake lines, calipers all around, rotars, pads, brake pedal, bleeding until I was blue in. On consecutive applications, the pedal height should gradually rise. I checked for physical obstructions to the pedal (none), checked that the brake booster was working (yes), even pulled the ABS fuse and made sure it was good. Technician B says that there should be at least two power-assisted brake applications after the engine stops running. A brake inspection indicates a leaking wheel cylinder that has soaked the brake shoes with brake fluid. It means that the caliper. If the brake fluid is low, you can fill it and then pump the clutch pedal, or bleed the system, like you would brakes, to remove any air. Wait a couple of minutes and then depress the brake pedal. Pedal will fall off significantly when bleed plug is properly open and bleed valve stem is correctly unseated (pressed inward) by tool. You should immediately notice firmer pedal if your rear brakes were too loose and your adjustment method was successful. If the brake pedal goes down farthest the first time and then gradually rises on the 2nd and 3rd press this indicates an airtight brake booster. I spend half the time using the engine to brake Also the booster is not new. You should get 2-3 hits of power assist. The brakes are new just replaced. After replacing the rotors and pads, the issue persisted. After installing new rotors and these pads my brake pedal went to the floor. (g) Bleed new valve assembly at each brake line fitting one at a time. replaced master cylinder, soft. I have changed Pads, Shoes, Master Cylinder, Booster, RABS Valve and everything else in between. With the engine stopped, depress the brake pedal several times using normal pressure. If After replacement fix.