Skip the auto shop - Our mechanics make house calls

Q: brake pedal goes straight to the floor after replacing all 4 brake lines and pads and calipers

asked by on

replace all four sets of brake pads front calipers and lines rear brakes work front brakes don't when you bleed it it doesn't squirt out I have no breaks at all one person told me the booster but it's like just to go straight to the floor they're not spongy I need help

My car has 140000 miles.
My car has an automatic transmission.

A: This brake system has an anti-lock (ABS) sy...

This brake system has an anti-lock (ABS) system. This system prevents wheel lock-up during a hard braking event to came tire contact area on the road and effective. When air is introduced to the brake system it can get trapped in the hydraulic modulator, which is a component of the (ABS) system.

When there is brake bleeding in this system, a scan tool is required to activate the modulator’s brake channels to open and remove the trapped air. Another type of failure is the master cylinder leaking internally. Brake fluid over time degrades and can cause seals to fail. This fluid should be flushed as a maintenance item, depending on years of service. Since you shouldn’t be driving without working brakes, I recommend having a certified technician, such as one from YourMechanic, come to your car’s location to inspect your brake system and let you know what repairs need to be made.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Front brake gets locked up - 1983 Jeep CJ7

Have the residual pressure valve for the locking brake checked for problems. Residual pressure valves maintain a very slight hydraulic pressure for each brake in order to make the brakes more responsive when you press the brake pedal. If it...

Q: I have always used regular 5W-30 Motor oil - should I change to synthetic?

Switching from regular to synthetic oil is not a problem. Your engine will benefit from the better lubrication, temperature resistance, and staying cleaner longer than conventional oils. Switching to synthetic oil or even back to conventional oil is not a...

Q: Wheel keeps humming, I think it's a wheel bearing

Hi, thanks for writing in. I believe you're on the right track. Wheel bearing failures are common on many GM vehicles particularly their trucks and SUVs. I would recommend having your wheel bearings inspected with a mechanic's stethoscope to determine...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...