Q: Humming/whirring sound only when accelerating.

asked by on

I drive a 2001 manual toyota echo. It makes several noises, the most concerning being when I am pressing the gas there's a whirring or humming noise coming from the front of the car. There's also a noise like some one is jumping on an old bed when I brake. The A/c also stopped working after I heard a loud pop while driving, and the belt sqeals if my batter is weak and early in the morning. I don't know if any of this is related, but I'm curious as to what the noise that happens when I only accelerate may be. The car's in the shop now and the mechanic "thinks" it's the wheel bearing I had replaced a couple years back. This is my first time at this mechanic and he didn't the day after I dropped my car off like he said he would, I called a week later and he said he'd call back and never did, so there isn't a lot of trust.

It is possible that you have a wheel bearing issue. It is usually worse when cornering in one direction and gets better when turning the other direction if it’s just one bearing.

The brake noise could be the return spring for the brake pedal or the pivot point for the pedal needs lubricating. It is also possible that the brakes need replacing, and that a component called a squealer is making that noise to alert you to the worn brakes.

The belt needs to be tightened. When your battery is low, it puts a load on the alternator causing the alternator to be harder to turn. With a loose belt, it slips until it can gain traction and accelerate the alternator to the engine speed. Early in the morning, dew or moisture can collect on the belt and contribute to the belt slipping.

If you would like this to be checked by a certified pro, an expert from YourMechanic can come to your location to diagnose the noises that are being exhibited and can assist you with the proper repairs for this.

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. Humming/whirring sound only when accelerating.

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: Roaring or howling noise while driving my 2006 Chrysler town and country

Hello. Most of the time if you are getting a noise like this when the vehicle is moving, it is due to either a tire issue or a failing hub bearing. I always check the tire tread first. If it...

Q: The weld broke from the manifold or the catalytic converter. Will it be ok to drive if a few miles until I can get it fixed

Hi there. Where the manifold is located on this vehicle, you may cause additional damage to the surrounding area components from the exhaust heat. I would not recommend driving it except to the repair shop if it is only a...

Q: Thumping sound in reverse

Since you are not driving the car much then you may have the rear brake shoes grabbing when you back up. You should have the vehicle checked to make sure the rear brake shoes are in good shape and adjusted...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.