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2007 Toyota Avalon - Vibration

car vibrate intermitten when increasing speed

Yes. Does it vibrate at specific speeds? That could be an imbalanced tire.

Does it vibrate at a specific RPM range? That could be an engine problem, it would help to know at what RPM range it vibrates in. This used to be common with old carbureted cars, they would have a spot where the A/F ratio would be off, usually associated with a throttle setting.

Does it vibrate at a specific throttle position, the TPS could be dirty.

The inner CV joints are worn causing the vibration during acceleration.

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