Brake Pedal Goes To Floor After Bleeding The Brakes Many Times

The diagnostic check on the brake booster appears normal except that when i start the engine with my foot on the brake the pedal goes almost to the floor with a very mushy pedal. Replaced the master read more. Replaced line bled brakes and i cannot get the pedal to firm up.

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The brake pedal goes all the way to floor.

Brake pedal goes to floor after bleeding the brakes many times.

1 leak from brake line or brake caliper one of the reasons is the brake system loses pressure from an external brake fluid leak. I have replaced rear brake pads and rotors on my 2010 highlander and right after i went to take the car for the test drive the brake pedal goes all the way to the floor. I scanned the car and it says abs inlet valve coil left circuit and gave me c1201 code and i was wondering if someone can help me with it. Soft brakes brake pedal goes to floor replaced master cylinder twice and bleed lines many times.

Since then i have bled the brakes many times. Abs light goes on occasionally 2 year problem no mechanic can diagnose. The brake booster holds vacuum just fine so again i am lost. During normal use brake fluid can become contaminated and the master cylinder wears internally but only for the length of your brake pedal travel.

If it is full capacity then there is no leak. Right front brake line failed due to rusr. Brake pedal goes to floor when engine is running good hard pedal with engine off after 4 or 5 pumps but when engine is started pedal slowly goes to floor. Reasons your brake pedal goes to the floor technically there are two main causes that would make the brake pedal sink all the way to the floor.

Can somebody shed some light on this problem. The first thought that comes to anyone s mind when brake pedal goes to the floor when engine running is that there is a leakage in any of the brake lines that outflow the pressure in the brake system. There is no leak anywhere. 2005 3500 sprinter van.

Posted by arbucklesrul on apr 21 2012. The first thing you require is to check the brake fluid level. Bled 6 8 oz of flu read more. Brake lines brake calipers check.

Brake pedal goes to floor after bleeding the brakes many times a wheel cylinder went out over a year ago. If you pump the pedal and it goes firm but slowly drops while you hold it you may have an additional leak somewhere or you could have a bad master cylinder. 99 gmc serria 4wd 4 8 vortex. I just wonder if the abs unit needs to be bled with an obd reader or if it could be a vacuum problem.

I bled the brakes and the master cylinder at least 10 times.