Q: Brake pedal feels spongy.

asked by on

My brake pedal has a spongy feel to it. The pedal only goes about 3/4 of the way to the floor. I've had the master cylinder replaced about three times.

The feeling of a spongy pedal indicates old brake fluid and/or air in the brake system of your Navigator. While it was mentioned that the master cylinder was replaced three times, more information is still necessary for a proper diagnosis of this issue. I would want to know why the master cylinder was replaced the first time. It should also be asked if this was due to a similar situation of a spongy pedal, or did this symptom develop after the first initial repair.

It is very possible there are a few things going on here with your vehicle. You may have a collapsed hydraulic brake hose or a stuck piston inside one of the calipers. Another possibility I have encountered is when the master cylinder was replaced and the push rod that applies the force to the master cylinder needs to be adjusted. As you can see, because there are so different possibilities for spongy pedal and because any concerns with the braking system is a major safety issue, I recommend enlisting the help of a certified mechanic as soon as possible for proper diagnosis.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Brake pedal feels spongy.

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: Power cutting off, then come back with the alarm going off

Hello. There are a couple of causes that come to mind in this case. Battery cables, electrical system grounds or the electrical control unit (ECU) all come to mind as possibilities. It is safe to say a vehicle that...

Q: ok i have a 01pontiac grand prix and the car has a wobble to tje front passenger side and a thummping noise that stops when i turn

Hello there, many common faults will cause a wobble and thumping noise on your 2001 Pontiac Grand Prix. Replacing the hubs and the passenger side tire rod is a great place to start, but before any more parts are replaced...

Q: Original and replacement brake pedal feels softer the longer the SUV is driven

I am not aware of a change over of the brake booster from a vacuum style to an electrical style. This may be a new recall that I am not aware of, and I cannot comment on an ongoing recall...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...