Q: Helicopter noise / vibration when driving.

asked by on January 27, 2017

I've replaced most of the front end: CV axles, bearings, etc. Have run the car on a jack stand a narrowed noise to driver's side. Have run it without the wheel or rotor to eliminate a tight caliper and warped rotor. Changed front left bearing twice, just to be sure. Out of ideas.

My car has 146000 miles.
My car has an automatic transmission.

Car is making a noise Inspection $79.99 - $99.99 Get a Quote

Hi there. The noise is coming from the transmission. The noise could be a gear set inside the transmission with a broken tooth causing the vehicle to shake and sound like a helicopter. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Loud grinding noise coming from front right tire.

It sounds like you may have a wheel bearing that may be close to locking or freezing up, which can generate an enormous amount of heat. This may eventually be enough heat to cause the wheel studs to break as...

New battery still gives a poor voltage when driving it gives the proper voltage.

The test you performed doesn't really tell the whole story. The alternator may be charging, but not up to capacity. To be sure you need the equipment to load test the charging system and see if the alternator output is...

looking for the fuel pump fuse location on a 92 subaru legacy

If the pump ran out of ruel and was ran low on fuel all the time then the pump will seize up and not pump. You most likely have a bad fuel pump. There is no fuse between pump and...

When applying the gas my car jerks when accelerating

What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

What is that black thing in front of my car that's hanging?

Hi There, A number of things are black in color and may drag from the front of the vehicle if they happen to be loose or broken. There are many different under carriage guards that help to protect various engine...

Any DIY service manuals available? 2007 Mercedes S550

Hello - except for the Mercedes factory Service Manual/DVDs, the usual sources of quality aftermarket service manuals (i.e. Bentley) are bare on this one. Haynes/Chiltons don't yet cover anything this new either, certainly not for S-class models. Your best bet...

my car jerks in stop and go traffic when accelerating or if i'm coming up a hill. it returns to normal once speed is up

Hello. I would recommend checking the connections to (and potentially cleaning) the mass air flow sensor. This is a unit that monitors the air intake as it is mixed with fuel prior to being injected into the motor. If this...

How can I tell if the water pump has been replaced as the previous owner claimed?

Hi, thanks for your question. The best thing to get when purchasing a car are service records. If the seller doesn't have them in hand, you can go to the shop that did the work and they will have records...

Related articles

What Does It Mean When an Engine "Knocks"?
If your engine is making a knocking noise it means there's a problem. The wrong fuel octane, carbon buildup, and bad spark plugs can cause knocking.
Symptoms of a Bad or Failing Intermittent Wiper Relay
Common signs include the wiper blades only working on one speed or a different speed than you selected, not working at all, and making humming noises.
How to Diagnose and Repair Noisy Brakes
Squeaky car brakes are hard to drive with. If your car brakes are making noise, check the brake pads and brake rotors to see if they are worn down.