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What Grinding Noise Means When You Are Accelerating? [ Answered ]

What Grinding Noise Means When You Are Accelerating? [ Answered ]

When your automobile accelerates with a grinding noise, there may be a problem with the transmission, the differential, a defective wheel bearing, a damaged CV joint, or a worn engine/motor mount.

It’s never a good idea to make noises while driving, but a grinding noise? That can appear highly frightening. Always start with having a mechanic give it a thorough inspection and diagnosis.

What grinding noise means when you are accelerating?

The planetary gear arrangement in your car is probably the cause of the grinding sound you hear when you accelerate. This system ensures that your vehicle’s engine and wheels are moving at the same speed.

Transmission damage may result if the wheels and engine are not operating in unison (thus the grinding). This grinding may be audible when your automobile accelerates or is in a particular gear.

If you hear grinding and it turns out to be the transmission, it’s probably too late to fix it; you’ll need to replace it.

Even though we all desire independence, you shouldn’t try to repair or replace your transmission. Transmissions are delicate, complex machinery that should only be fixed or changed by experts.

Is it safe to drive a vehicle with a grinding noise?

An unsafe condition, such as worn-out brakes or a faulty wheel bearing, may be indicated by a grinding noise. As a result, you should fix the issue soon to ensure your car is still reliable and safe.

Can the transmission make a grinding noise?

One of the most unnerving sounds you may hear coming from an automatic transmission if your car has one is a grinding noise. A significant issue with your planetary gear system could cause a grinding noise from your gearbox.

A planetary gear system is necessary to operate automatic transmissions; if this system fails, your entire transmission could sustain significant damage.

A whining sound is the first sign of something wrong with the planetary gear system. The gear system has serious problems when you get to the grinding stage.

You must arrange a maintenance inspection as soon as you suspect your transmission’s planetary gear system is damaged. Your dealership’s maintenance specialist will be able to identify the problem and inform you of your available repair alternatives.

Why does it sound like metal grinding while driving?

It’s time to investigate other parts that could be the cause of your problems if the wheel/hub bearings aren’t the source of the grinding noises:

1. Brakes

Grinding noises may be heard when the brake linings or friction material has worn away, and the steel brake rotor is rubbing against the metal brake pad backing.

When the brakes are engaged, this results in metal-to-metal contact, which produces a grinding sound. Usually, only one front or rear brake, not both, will make the grinding noise. New brake pads and rotors could be part of the repair.

2. CV Joint

A worn CV joint may cause your car to grind when performing sharp turns at low speeds. A broken CV joint can fail if it is not repaired, leaving your vehicle locked in park.

It can result in losing control if it breaks down while driving. If you believe this to be the reason for your grinding noises, don’t hesitate to have your car serviced.

3. Water Pump

The engine may grind when running if the water pump is malfunctioning. Your automobile may overheat if the water pump isn’t working correctly. Make an appointment with your car mechanic as soon as you detect a water pump failure to prevent further harm to your car.

4. Alternator

Another indication that the alternator is failing is grinding noises. Modern alternators can generate a grinding noise that is difficult to locate but has a decoupler pulley arrangement that helps save gasoline.

A malfunctioning alternator can leave you stranded on the side of the road with a dead battery because it is intended to charge your car’s battery and operate the electrical system.

5. Air Conditioner

When your air conditioning system is turned on, you might only hear a grinding sound coming from an AC compressor. Get the car problem resolved as soon as possible because it helps to dry out your windows in the winter season and keeps you cool in the summer.


Do not ignore any strange noises you hear while driving! Especially if the sound is loud grinding. Keep track of the date, time, and sound of the event.

Then, fix it right away or have a mechanic come out. The earlier you fix a problem frequently indicated by grinding sounds when accelerating, the better.

But occasionally, your car might break down unexpectedly. You run the possibility of getting trapped for a long time while waiting for help if maintenance is not sufficient.