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.

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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.

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