Recently the brake pedal started going to the floor but only when the engine is running. I just did a brake replacement on my 2003 explorer n now I have brake pressure on my brake pedal,it goes straight to the floor with no force n it's leaking coolant how do I fix it Eddie Carrara (author) from New Hampshire on June 04, 2020: The pedal never “fades away” if the engine is off. Here's an additional reason a brake pedal could go all the way to the floor: a bad brake booster. 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 it until you find a solution to this problem. It would feel the same with the engine off and pushing the brake pedal several times, bleeding the vacuum away. With the engine stopped, depress the brake pedal several times. Looked all around and no leak. The booster is a mechanism that uses vacuum pressure to take the force being applied to the brake pedal and amplify it. pedal still goes all the way to the floor and truck wont stop. it has been fine. Brake pedal goes to the floor when I hit a bump 2 Answers Hello, I have a 2003 Lincoln town car, I was driving to work today and hit a good size bump in the road while on the brakes. Brake Pedal Goes To The Floor. If it does, then the obvious approach of bleeding the brakes must commence. Vacuum leak, when large enough, would reduce the function of the booster and the pedal becomes hard to push, but will not go to the floor. 5) Engine has good vacuum and idle. i bleed the system a while back and put new brake fluid in . 3) Hoses, lines, pads - OK 4) Replaced power brake booster check valve and filter. The third reason why your brake pedal may go down to the floor is because your brake booster is failing or is bad. Seems they found the master cylinder was leaking into the booster, causing it to go bad (again). I have a 2012 Chevy Impala. No leaks and I'm suspecting M/C. there is no leak in the system and my brake level is full. There is no leak anywhere. Hi everyone, I have a 2000 outback with 135000 miles. There are no leaks at the calipers but I did notice a small leak where the master joins to the booster. There are no fluid leaks, front or back, on this truck. Mazda 2 (2011) A little while ago my brakes seems to stop working (I had recently driven through quite a large puddle) the pedal went to the floor and the car took a lot longer to stop. I wedged something between the seat and brake pedal to keep pressure on the system. If the pedal goes down further at the first time, but gradually rises after the second or third time, the brake booster is functioning properly. hello, 2006 f150 5.4 …change the calipiers,brake hose, booster was leaking when pedal was pressed,new master cylinder was replaced twice thinking it was a bad master cylinder from auto zone. My ford truck brake pedal would go almost all the way to the floor after I had back brake issues and fixed them and bled the brakes. replaced master cyl, bled all … If the pedal goes down slightly, the booster is in good condition. Ensure master cylinder is bench bled prior to installation. Not losing any fluid. In today's video, I just wanted to share a quick tip for anyone who is having a problem with the brake pedal fading all the way to the floor board. 2006 double cab 4x4 brakes dont grip very well and pedal travels all the way to the floor. it goes down slowly. The most common reason for a soft brake pedal is simply air still in the system. One test (that used to work in older cars) is the put hard, continuous, pressure on the break (heh, heh, heh) pedal and hold it there. 11. 10. Follow the vehicle’s … Fluid Leak If I turn the vehicle off the pedal will pump up and stay firm. Continue with the front right wheel. - Chevrolet 1997 K1500 question 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. You may have to pull the wheel to inspect. Go to step 2. Attempts & Checks so far: Double-checked the Vacuum lines thinking it might be the Booster, however the booster would make the brakes harder to push not softer and there weren't any issues with the lines.