Quote:
Originally Posted by Bob@MorganBingham.Com
2010 Yaris Sedan - orignial purchaser.
Dealer has brake booster on order to replace under warrenty. Symptom was a sound the Toyota mechanic had "never heard before from the transmission side of the engine" when pulling to a stop. This was a type of intermitent hum.
Note: A British classic sports car mechanic thought it was a "vacuum sound."
The Yaris brake booster on my checking the forum, does seem to work on a vacuum principle.
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FOLLOW UP - noise persisted after Toyota replaced brake booster SEE "Humming Yaris"
05-03-2012, 05:53 PM
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