Q: Brake pressure low and brakes growling

asked by on

My brake light is on. In addition, my brake pressure is low and my brakes make a growling noise.

Sounds like you brake pads are down to the metal. Brake pads have a metal backing plate, but the part that actually contacts with the rotor to stop your vehicle is a friction lining usually made up of an organic material and some soft metallic fibers. When this lining wears out totally, the metal backing plate makes contact with the rotor causing a grinding noise like what you are hearing. The part that squeezes your pads onto the rotor is called a caliper. The caliper has a piston that is hydraulically driven when you step on the pedal. As the pads wear, the caliper requires more fluid to take up the space of the worn pads. This will cause a low fluid condition on the master cylinder turning your light on and the worn brake pads cause the low pedal feel. By now, I suspect there is damage to the rotors as well as a possibility that the caliper might be leaking. A complete brake inspection is necessary to see exactly what is damaged and what needs replacing.

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 pressure low and brakes growling

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: Çv boot torn

Hi There, Unfortunately, there is no way to tell exactly how far your car will make it with a torn CV joint boot. Depending on how long this has been torn and how much damage has already occurred, this may...

Q: Cracked valve cover

Good question and I hope I can help you fix your issue. Your car may not be starting due to your valve cover being cracked. It may also not be holding enough pressure in the engine to start. However, we...

Q: Brake pedal sinks all the way to floorboard

Hi. Sounds like a sweet setup you have there for your 1998 Nissan 240SX. It sounds to me like the lack of brake pedal pressure could be due to a leaking brake booster possibly or a brake booster hose collapsing...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...