Brake Pedal Goes To Floor Intermittently

The brake boost light should go off. Briggs primer ball not returning? Engine won't run. 240 Soft pedal and 'weak' brakes maintenance but never intermittent soft sometimes to the floor others just a bit farther travel softer Pedal goes down 5-6. It is an intermittent fault, it'll run like crap all day, then run perfect for 10 mins. Greetings from Seattle! (Go Hawks!) The brake pedal on this Jimmy intermittently goes to the floor when coming to a slow stop, especially when turning. 5L through the brake lines. replaced master cylinder, have bled brakes all day, still have a soft pedal???? (2007 Kia Rondo) CUSTOMER HAS BEEN DRIVING VEHICLE WITH SOFT PEDAL FOR A COUPLE OF MONTHS, HE HAS BEEN PUMPING THE BRAKES TO STOP. It can also result in intermittent operation of the brake lights. Replaced every thing in the braking system except two rotors that are good. However, sometimes the brake pedal has excessive travel. Turn ignition key to OFF 8. I guess a master cylinder brace is in my future too. After the failure happens, brake feels normal in park. I don't see any drips on the garage floor or wet marks on the wheels near the brake lines. New 2019 Ram 3500, from Liberty-Dayton Chrysler-Dodge-Jeep, Inc in Liberty, TX, 77575-9557. But what if the pedal intermittently isn't moving back far enough? Even a new master cylinder's pistons might not move back enough to open the compensating ports. If I do not pump it, and continue to apply pressure, it will fade to the floor. truck slowly come to a stop and no amount of pumping brings it back. Then move to LR. From what I've been reading on brake boosters and vacuum reservoirs in general, there should be more available. It seems scary that you have no control over the brakes but you can control this. - Uneven pull to the right or left when the brakes are dry. 5 diesel has brake pedal creep. How to fix a brake pedal that sinks in your car DIY with Scotty Kilmer. The brakes on my X5 are now fine i pumped the brake pedal up and blocked it with a piece of timber against the seat base and left it over night (this opens all the valves etc in the system and any air can travel back to the master cylinder, it works) and i ran the car and as the pads bedded in the brakes came back to normal. The brake went all the way to the floor. This could show itself a Brake Pedal that goes to the Floor but if you pump it you get some of your Braking back. Maybe 5 to 10 percent of the time, especially with older cars, we would have a master cylinder failure - brakes wouldn't bleed, very uneven pedal or it would just go to the floor. This is especially true if your brakes go soft all at once, without any advance warning. Brake pedal goes to floor after pad/rotor change - HELP Hey guys I just changed the front pads/rotors on my gf's 2003 SE. Next problem: this was sort of intermittent before the calliper job and never anything like as bad but I can now push the brake pedal to the floor. In a follow-up statement, the NHTSA announced the November 25, 2009 recall details as a "vehicle-based remedy" to address the floor mat pedal issue. Never had an issue. With an hydraulic failure (the symptoms of which would be the pedal going to the floor) the brake light should come on. Since day 1 have felt compelled to pump the brake pedal to get a firm pedal when stopping. It's usually the result of the piston seal failing, catch it just right and the seal folds and the pressure bleeds by. They will seem fine most of the time, but with certain pedal pressureright to the floor. Pedal pumps up and stays up for a while, but at unpredictable times, it almost goes to the floor and pedal has to be pumped up again. The booster takes the force from the brake pedal and amplifies it. Hope this helps. I call it brake by wire because I can push the pedal to the floor fairly easily whenever the car is stopped. Yeah pressure comes back after, literally just goes down once, no brakes, let off the pedal, then push the pedal down again and brakes work. Or perhaps, some switch malfunction is causing the lights to operate intermittently. I have problems with the abs sensor. If it's low, top it off to the mark on the side of the reservoir. It is scary to stop. If your fluid levels are dropping look for fluid leaks at all 4 wheels. 93 f53 brake pedal went to floor i hope it was just brake fade, but there was no brakefluid out of the master cylinder. They had the car for maybe 30 minutes and told me they didn't change and bleed, but re-calibrated the system and that everything is now fine. it's not the low idle. After searching it looks lie my problem is either my master cylninder or booster is bad. Brake fluid was replaced and system serviced. The dealer has repaired this time and time again but the problem persists. then its the master cylinder seals. I would check the master cylinder push rod for proper length because. he was dumbfounded after I put on a new OEM master cylinder. Pretty much a straight shot and no bumper to bumper. Often the caliper pistons can be adjusted out simply by ratcheting the e-brake mechanism until the caliper piston pushes the pad tight against the rotor. The last two days when I go outside to start the car , the brake pedal is really hard to push and the car won't start. took the car for a test spin and everything was fine. This is a recent and fairly sudden development. The brake pedal goes to the floor shouldn't really happen on a tandem master cylinder as it has two independant braking circuits which are split front and back or diagonal split. If I hit the brakes hard for quick stop, they work well. However, if there is a situation where I have to hit the brake pedal quickly, the pedal then goes almost all the way to the floor and it gets very hard. Causes of a Low Brake Pedal. the brake pedal is going down to the floor when braking is not a normal operation, driving this car is dangerous. If you hit your Ford F-150 or Super Duty's brake pedal and it goes to the floor, stop the vehicle and don’t drive. com When I have my foot on the brake pedal and start the bus, the pedal goes down slightly once the engine starts, indicating a vacuum supply to the booster. It just suddenly loses pressure and the brake goes to the floor. Release it and/or pump it and it comes back to normal. My wife complained about the brakes one day. I usually fix this issue with pumping the brakes. well my fear almost came to light when i had to floor the brakes to stop the car while driving on the highway. As soon as I pump the brake, it's back to normal. My guess is they didn't rotate the rear pistons when compressing them. I was approaching a stoplight and I pressed the brake and nothing happened until I had pushed the pedal all the way down to the floor. During a round of golf the cart will occasionally intermittently stop running. Then the brakes would seem to pump up to normal and be fine for the rest of the day. Pedal goes close to floor at complete stop with light pressure. At this point I have contacted somebody about special procedures for purging air from the ABS pressure modulator assembly and hope to hear back from them soon. Over the prior few weeks, I've remembered that occasionally while idling in traffic, the brake pedal would also go to the floor but since I was stopped already, I must have been naive thinking this would not be a problem especially at track speeds. Brakes will apply slightly when pedal is at the floor. But if I lose vac, I should have stiff pedal, not pedal-to-the-floor, no? That said, you made me go look. c) It is possible that there is a fault in the hydraulic pressure regulation, but unlikely ( the brakes modulated normally with pedal pressure, if not feel, when the pedal went 'hard'). If this bearing goes bad it will allow the brake rotor it move back and fourth which pushes the caliper piston back into the caliper creating an air gap. It seems like after I've let it sit for a while the pressure will come back, sometimes for a few days other times only for a few hours. The brake boost light and parking brake light should come on. These valves work together to control booster operation. Last night while I was putting my gauge panel back in after solving my clutch issue I stepped on the brake pedal and it went to the floor. After testing, found brake master cylinder is failing Replaced Failing master cylinder to correct concern. i looked all around the truck for leaks from brake fluid there is none and the brake resiviour (sorry for the spelling) is still full. The brakes have always been weak, like you can't lock them up by smashing on the pedal. yes its got abs - the pedal is quite hard - no real feel to it and if your traveling at speed it just feels like its taking too long to stop brakes have been checked and are working properly. When you go to push on the brake, it can make the first pedal application fall to the floor. bleed the brakes using the scanner. The LEFT brake is still a problem but is now intermittent--it can be high and hard like the right brake, but then it will stop. If I press slowly on the brakes coming to a stop, the pedal fades all the way down and then at the end I get braking. New 2020 Lexus RX 350 Nightfall Mica Near Owings Mills MD at Len Stoler Lexus - Call us now at (443) 426-2163 for more information about this 2020 Lexus RX 350 350 AWD - Stock #L27936. If I hit the brakes hard for quick stop, they work well. Snug one line nut and leave the other one loose. The ABS pump system light comes on when I turn the key, so I know they are working. They don't fit reel well on they tire side, so every time you turn hard left or hard right the brake caliper was hitting the guard. The brake override system, also called "brake to idle" and already a common design in German cars, allows the driver to override the accelerator by hitting the brakes. tha car will have good brakes for a couple of weeks and then one day i go to stop and the pedal goes right to the floor just like i blew a line. Brake pedal goes to floor. Good fluid level and no apparent leaks. Checked fluid level in brake fluid tank and found full. Brake peddle goes to the floor sometimes after a hard braking event. Later on the Car started without any issues and after that the car have a same problem again, I don't know what is going on. Spent over $**** so far. The LEFT brake is still a problem but is now intermittent--it can be high and hard like the right brake, but then it will stop. At that point, the brake pedal moves towards the floor. Brake Pedal went to floor. Exterior; Chrome front and rear bumpers; Conventional lens halogen bulb headlights; Courtesy lights; Metallic paint , black paint , gloss paint; Rear platform step; Heating, Venti. While Driving On The Road, I Pressed The Brake Pedal To Avoid Hitting The Rear End Of Another Car While It Was Stopped To Make A Turn. It sometimes will not go after I've stopped for a golf shot or at the tee box. Hi this is really bugging me now, I have a mk5 swb low roof 80 2. If it's low, top it off to the mark on the side of the reservoir. They had the car for maybe 30 minutes and told me they didn't change and bleed, but re-calibrated the system and that everything is now fine. Very intermittent, brakes check out ok, could be replaced in another 5,000 miles, fluid level full, no leaks apparent. My dad never used the parking brake and it was inop. At times the pedal will lose almost all of it's pressure and will go most of the way to the floor. Last edited by fnkychkn; 03-22-2009 at 08:57 AM. this should not happen, regardless of pedal position. Going slow and braking, pedal goes down and has less breaking power. At that point, the brake pedal moves towards the floor. Intermittent brake failure. It isn't super firm, but it's acceptable. Hello everyone. This happened 2 more times. When bleeding the brakes I'm having a helluva time getting anything out of the rear wheel cylinders. Does the pedal go to the floor with pressure on the pedal, if so master cylinder. The vehicle may not stop or needs a lot of distance to come to a stop. Since day 1 have felt compelled to pump the brake pedal to get a firm pedal when stopping. Soft brake pedal 2007-2008 Elements Traded my 04 EX Element for a new 08 EX in April 09. Most of the time, the brake pedal is fine. My brake pedal went straight to the floor and had I not had a ebrake I would have crashed into the person in front of me. The fronts allow pedal travel to about 3/4 of the way to the floor and push fluid, but then the pedal stops hard, wont go to the floor, and the fluid trickles out. OK guys I need help on this one. It's fine, unless that one random time I need to stop ina hurry quickly the first time, it does it, then that split second to release and put the brake back on is plenty enough to give you a real ***** up day. Approach an intersection and the brake pedal goes almost down to the floor. You may have to remove the rear brake drums and adjust the rear brakes, the rear brakes are only adjusted when the emergency brake is used. Either way, your brakes need immediate attention. Voltage should smoothly decrease to Zero. I've read where the ABS Unit can start to allow fluid to bleed by and you lose pressure. There is an intermittent problem with excessive brake pedal travel. If the Brake Fluid got too low and you filled it back up to normal, it is possible Air got into the System. If the Brake Pedal goes to the Floor and you Brake Fluid level has always been normal that is likely they Brake Booster. At home later, we turned the engine off, checked the brake fluid level, and it was fine. During the 1st 30 minutes there is only one power assist pump available. After pumping the brake peddle a few times, they come back. Dealers and Lexus Corporate says "take to dealer', There must be something is the system that fails intermittently. today the pedal goes almost to the floor (alot of travel) and then seems to catch and stop at the point the pedal gets almost to the floor. Local dealer working on the car keeps insisting this is normal, although they have twice gotten similar 300C's to compare, and they all are like mine was before, initial bite is good and the pedal stays up as you apply more pressure. I've let my car brakes go past the threshold of grinding, and the pedal goes all the way to the floor. If you hit your Ford F-150 or Super Duty's brake pedal and it goes to the floor, stop the vehicle and don’t drive. I opened the brake bleed when compressing the caliper this time and bled them when I was finished. I'd test drive a hummer at a different dealer or two to confirm that it's not a design "feature" on that vehicle, and if the others behave properly then I'd pressure the original dealer to fix it and / or. The brakes still function with the engine switched off, but far more brake pedal pressure is required to operate them. ABS Module replaced , two new master cylinders automated bleed and no pedal. If not, you have an open or high resistance in the high current loop. At times the pedal will lose almost all of it's pressure and will go most of the way to the floor. When pressing the brake pedal gently to moderate it goes all the way to the floor leaving about an inch of actual brake which actuates only the rear drum brakes. Cause: The rear brakes are out of adjustment. Pressurized fluid also flows through the hydro-boost to the steering gear to provide power steering. Brake pedal intermittently goes to floor unless I tap first then I get normal resistance 4 Answers 96 Camry. Brake boosters have a small amount of slack between the pedal end and the master cylinder end, to operate the vacuum valve. I believe it is a faulty master cylinder or brake booster, and can cause injury or death if it happens on the freeway or at any significant speed. She pumped it a few times and brakes seemed to work. What Might Cause a Gas Pedal to Become Stuck? Toyota, the world's largest automaker, has suspended sales of certain models and recalled millions of older ones as its engineers search for the. Re: Ef Falcon brake pedal goes to the floor We have decided to go with the idea of the worn rotors and pads. Last edited by fnkychkn; 03-22-2009 at 08:57 AM. A: A brake pedal can be hard to push because of several factors, including a brake pedal getting caught on something, failure of the power brake booster or a sticking shoe, which causes the brake fluid to boil. brakes or the pedal would go to the floor. Didn't help Second visit - could not duplicate. My wife complained about the brakes one day. com When I have my foot on the brake pedal and start the bus, the pedal goes down slightly once the engine starts, indicating a vacuum supply to the booster. You have probably have air in your brake lines. If it's low, top it off to the mark on the side of the reservoir. I have no lights. Turn ignition key to OFF 8. The ABS lifts the brake pedal in the same way as if it was locking up. I've had a car in the past that had intermittent master cylinder issues. When the brakes "fail", does. Again, very soft spongy pedal, almost goes to the floor before feeling any real braking, poor brake performance, rear brakes will not lock up even on loose gravel. When stopping, sometimes the brake pedal goes a ways lower and sometimes it's normal. Returned to the dealership after stopping at 2nd traffic light, advised Service Rep about the spongey brakes and the pedal hitting the floor. Anyone have any ideas what might cause this?. When it's low, it will pump up. Other times and when I am bleeding the brakes the pedal is nice and stiff. Where the MC attaches to the booster, are there any signs of fluid leakage? Intermittent problems can be really tough to diagnose. Warped rotors are not the only cause of this; bad wheel bearings that are allowing too much wheel/hub movement can do it to. I had that happen to me once in a crappy old '87. Clutch repeatedly goes to the floor , not allowing me to engage any gear. The booster takes the force from the brake pedal and amplifies it. It was also to the floor in my panic case when the car was still slowly moving. If the mc is 10+ years old, perhaps not flushed annually, or bi-annually, and the brakes are manually bled, the seal is pushed over that rough, pernicious debris in. This problem only occurs when semi braking to hard braking and the front tire or tires slips a little but causing the abs sensor to go off. It was the Master Cylinder,piston rod seals stuffed and the fluid level was ok but dark. This is especially true if your brakes go soft all at once, without any advance warning. Pt cruiser pump brake, pedal gets hard, then goes to floor, Customer Question pt cruiser pump brake, pedal gets hard, then goes to floor, new master cylnder fitted, does booster need replacing, if not what is wrong, found rubbed through on brake servo hose, maybe air getting in or bleed system with diagnostic for ABS cycle. They had the car for maybe 30 minutes and told me they didn't change and bleed, but re-calibrated the system and that everything is now fine. The booster takes the force from the brake pedal and amplifies it. Braking performance is greatly diminished, potentially leading to a crash. Components either damaged or significantly worn. My deal is we live rural and a 3 day a week or so drive to town, about 20 miles round trip, and back was all the brakes were used. The fix was to install special front pad shims if the customer complained about the brake pedal intermittently feeling like it was going too far to the floor or if they noticed pulsating (not like when the ABS kick's in). She pumped it a few times and brakes seemed to work. There was some resistance around 1/2 way but they perhaps over a second, the pedal would continue to sink to that 3/4 point. Open the front bleeder on the modulator and bleed the modulator, then bleed the front brakes beginning with the right one. Callipers all working checked when pads changed. Otherwise they work fine. Brake pedal goes to floor after pad/rotor change - HELP Hey guys I just changed the front pads/rotors on my gf's 2003 SE. but this is the only vehicle i have had my hands on with a hydrovac system. The "BRAKE" light is continuously on. If I press very hard abruptly it will periodically actuate the front brakes too and slow the car down normally. I had a bad brake booster on my 97 Taurus - the pedal would not go to the floor, but would become very stiff if you depressed it 2 times in quick succession. It isn't super firm, but it's acceptable. It does not go to the floor, just keeps moving until almost at the floor, then it stops and the brakes hold. the car will lock up the brakes, but the pedal goes most of the way to the floor when sitting at a stop light. One problem is that I can't get the problem to happen. A dangerous situation if you needed an emergency stop. But if I lose vac, I should have stiff pedal, not pedal-to-the-floor, no? That said, you made me go look. I can be driving and all will be fine tjen sometimes when soft braking I feel the pedal drop away or when sitting in traffic with foot on the brake it will do it, dut other times it will be fine. You either have a major brake failure or are losing pressure in the vacuum assist for your brakes. The brakes make a "plink" sound, like a ukelele string being plucked, when the brakes are applied. If I give a quick pop it's just fine. A soft brake pedal is a MAJOR brake issue. The front calipers may have sticking pistons (some have 4 on each wheel), if the pins for the brake pads were not cleaned and lubed the pads will stick and not move properly. My brake pedal has no pressure and when pressed it goes to the floor. If measurements are the same, go to step 5. does your brake pedal go to the floor? i can routinely press my brake pedal all the way to the floor. Each time letting off the pedal and hitting it again made it work just fine. The misrouted fluid allows the pedal to drop, and the pedal may go all the way to the floor without applying the brakes. Here's the scoop. Last months I have problems with the brake. Power assist brakes on a 77 LT48. Maybe 5 to 10 percent of the time, especially with older cars, we would have a master cylinder failure - brakes wouldn't bleed, very uneven pedal or it would just go to the floor. Brake pedal goes to floor after pad/rotor change - HELP Hey guys I just changed the front pads/rotors on my gf's 2003 SE. My wife complained about the brakes one day. New 2020 Lexus RX 350 Nightfall Mica Near Owings Mills MD at Len Stoler Lexus - Call us now at (443) 426-2163 for more information about this 2020 Lexus RX 350 350 AWD - Stock #L27936. 7L V8 FFV) - Stock #385321. July 2014 - brake problem intermittently recurs. There was some resistance around 1/2 way but they perhaps over a second, the pedal would continue to sink to that 3/4 point. Recently did front and rear brakes - replaced rotors and pads. Check the battery and everything is fine. Some customers may comment about an intermittent spongy clutch pedal feel or clutch pedal sticking to the floor. brake application. Go and crack one of the bleeders that you have a tube / catch can on. If it doesn't, you have a problem with the. hello, 2006 f150 5. Once you have fluid coming out, you can pump 3 times and crack the bleeder. She pumped it a few times and brakes seemed to work. This only occurs when the vehicle is stopped and there will be several hundreds pounds force helping press the pedal down and applying the brakes. It just suddenly loses pressure and the brake goes to the floor. Just replaced clutch in 2003 Hyundai Tiburon Clutch pedal will not go to floor to disengage clutch or work neutral safety switch Help? You may have to tap the brake pedal after you have. Later on the Car started without any issues and after that the car have a same problem again, I don't know what is going on. Stainless steel braided brake hoses will reduce hose expansion, and provide a firmer pedal feel. here is how your nrakes are supposed to work When the brake pedal is depressed, a vacuum builds up in the booster which amplifies the pedal force. Otherwise they work fine. We have changed the master with two NEW units, flushed the brake system several times, disconnected front tw. This morning the brake light was on and I didn't get a chance to check he brake fluid, I was in a rush so I drove the car with the light on and the rake pedal had very little pressure, very spongy and when pressed hard it goes to the floor. It was the Master Cylinder,piston rod seals stuffed and the fluid level was ok but dark. Got a 1996 Saturn Sl2 (1. They had the car for maybe 30 minutes and told me they didn't change and bleed, but re-calibrated the system and that everything is now fine. com When I have my foot on the brake pedal and start the bus, the pedal goes down slightly once the engine starts, indicating a vacuum supply to the booster. I tried Moose's test described above. Later on the Car started without any issues and after that the car have a same problem again, I don't know what is going on. With the engine OFF, pump the brake pedal until the supply vacuum is entirely gone. After pumping the brake peddle a few times, they come back. Had to pump the brakes like crazy as I was coming to a stoplight. In an effort to be helpful despite that I cant make a solution out of this pile of data, I offer the following: -Some things will be everchanging throughout this entire period - like pad thickness. Last months I have problems with the brake. As I press on the brake pedal, it is firm at first, but begins to loose pressure as I slow down. today the pedal goes almost to the floor (alot of travel) and then seems to catch and stop at the point the pedal gets almost to the floor. I start moving again and soon it comes back to normal. Maybe it isn't a problem, not sure. still pedal goes to floor. I do not turn off the key when I stop during a round. Re: Ef Falcon brake pedal goes to the floor We have decided to go with the idea of the worn rotors and pads. The ABS pump system light comes on when I turn the key, so I know they are working. [Response:] You should remove and clean the front wheel speed sensors. Then move to LR. The pedal went to the floor and then I let off and pressed down and they. I ask because the brake pedal basically cannot go down to the floor if there isn't either a fluid leak or air in the lines. Summary: Intermittent problem: Brake pedal to the floor, with little to no brakes. With the truck in park, I did the airtight test and the brake pedal seems normal (the way it should be). When you're out of brake fluid, your brakes simply won't work. It sounds like your brake booster or the valve that is on it have a leak. Dodge Caravan - brake pedal almost to floor sometimes - yesterday everything was fine. 6 Return the accelerator to the off, or top, position very slowly - take another 5 seconds. What happens is if you gently push on the brake and it goes tom the floor, it means the brake fluid is getting past the seals. It was also to the floor in my panic case when the car was still slowly moving. 5di na as I said it has a intermittent soft brake pedal. Just as your brake pads wear thin over time, so can your brake fluid. Hope this helps. but always have brakes. Either way, your brakes need immediate attention. I had the front end jacked up and would turn hard left and hard right and then press the brakes and every time the pedal would go almost to the floor. I pump it to slow the car, then the minimal resistence the brakes give with the pedal to the floor is enough to stop the car. If the pedal goes to floor w/o resistance then you should turn in bleeder screw 1/16 turn. Love this article!. 2019 Ram 3500, Crew Cab, from McCord's Dodge Chrysler Jeep in Longview, WA, 98632-2408. This does not always mean that the brake booster has failed. There are no signs of leaking and no fluid is on the inside of the brake pedal goes to floor - Chevelle Tech. At times the pedal will lose almost all of it's pressure and will go most of the way to the floor. As a test of the bulb, when starting the light should come on briefly and go out. Test drive this Used Woodland Green Prl/steel Gra 2005 Subaru Forester & experience the Sewell difference today. This could show itself a Brake Pedal that goes to the Floor but if you pump it you get some of your Braking back. How to fix a brake pedal that sinks to the floor when you. My deal is we live rural and a 3 day a week or so drive to town, about 20 miles round trip, and back was all the brakes were used. Chrysler Town & Country Intermittent Brake Failure was created by ReluctantMech The brake pedal on my wife's 2011 town and country intermittently goes to the floor when braking!!! This problem became more frequent after a local shop replaced the left rear caliper. Brake Pedal went to floor. Got a 1996 Saturn Sl2 (1. Tonight when I came home, I almost hit my house. The ABS pump system light comes on when I turn the key, so I know they are working. Let the car set for an hour or so and able to depress the brake enough. Driving my 73 TA today, all is fine. com When I have my foot on the brake pedal and start the bus, the pedal goes down slightly once the engine starts, indicating a vacuum supply to the booster. It's a good idea (since brake fluid absorbs water and goes bad) to flush out the entire brake system with fresh fluid every few years. When you go to push on the brake, it can make the first pedal application fall to the floor. Good fluid level and no apparent leaks. The brake boost light and parking brake light should come on. To do this turn wheel full lock to one side and then remove the sensor from wheel that is turned out by undoing a 5 mm Allen screw you will see adjacent to arm where tie rod for steering attaches. A "soft" brake pedal that goes all the way to the floor can be caused by a number of reasons. Master cylinder was replaced by a shop but stiil didn't fix the problem. Yet I stil have a pedal that goes to the floor OCCASIONALLY. $48 out the door. Peugeot 407 Lots of brake pedal travel. hello, 2006 f150 5. There was some resistance around 1/2 way but they perhaps over a second, the pedal would continue to sink to that 3/4 point. The brake pedal goes right to the floor whenever it wants and I can't stop," said Chuck of Conestoga, NY. Brake fluid level is fine, recently serviced, no leaks - independant garage suspects an issue with the brake master cylinder. In the past 6 months I've replaced the master cylinder, pads and shoes, caliper on front passenger side, and bleeder screw on the drivers rear side. Do a full brake fluid flush and fully bleed them out. I expected the brake pedal to sit higher, more like it was when the car was new. then its the master cylinder seals. This problem only occurs when semi braking to hard braking and the front tire or tires slips a little but causing the abs sensor to go off. As the seal moves past the vent or "compensating" port it begins to create pressure in the pressure chamber through the lines and onto the brake units. I have to pump the brake for a few minutes to get pressure back to it and then it's fine. Don't push like you are panic stopping, but simply hold pressure like you are sitting at a red light. Intermittent long brake pedal 13 Jun 2018, 23:49 Hi all, I'm stumped by this problem, brakes are fine, pedal feels good, but then occasionally the pedal travel increases, and it needs a second pump to work properly. For more clarification, my problem was intermittent. Recently did front and rear brakes - replaced rotors and pads.