Technically there are two main causes that would make the brake pedal sink all the way to the floor.
Abs brakes drop to floor intermittent.
Pedal to the floor will not pump up.
If you hit the brakes hard like a sharp initial tap on the pedal they would work fine but if you eased onto them they went right to the floor.
Sometimes there could be a leak from this reservoir which will cause the fluid levels to drop.
Shortly thereafter brakes normal.
The brake fluid has a lot to do with controlling the braking pressure within an anti lock braking system.
I tried this and the pedal goes down lower than in test 1 but the pedal doesn t go completely to the floor.
There is a brake fluid reservoir which holds the fluid of the anti lock braking system.
Certain component may also refference esp esc or use the traction control symbol.
2001 ob 117 xxx miles.
Antilock brake system abs intermittent condition the electronic stability control esc may also be reffered to as electronic stability program esp depending on the vehicle model year and configuration.
This problem has occurred five times in.
I have had the master cylinder replaced and the brakes flushed and replaced twice.
When the abs system is not functioning then loss of traction skidding and hydroplaning are far more likely to occur under heavy braking conditions.
1 leak from brake line or brake caliper one of the reasons is the brake system loses pressure from an external brake fluid leak.
Pump brake pedal several times with engine off then push down brake pedal very slowly to see if it goes to the floor.
Without any warning i lose my brakes.
Either that or excessive amounts of air may exist within.
The leak may coming from a brake line or one of the brake calipers on your vehicle.
The sensors detect wheel speed and will send a message to the abs module to rapidly pump the brakes when it is detected that the vehicle is skidding or has lost traction.
Abs intermittent condition test.
An excessively squishy brake pedal usually means that there s air in the brake lines and you may need to bleed your brake system or replace the brake fluid altogether.
This was of course an intermediate step towards.