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Old 11-26-2019, 11:40 PM   #1
Scooby Newbie
Member#: 508768
Join Date: Nov 2019
Question New Impreza AWD Owner from Aus - deceleration "whining" noise, thoughts appreciated!

Hello NASIOC Community,

Daniel here, from the land of "down under" Australia. Have arrived with a high recommendation from a friend who is a member on here also. Here for the long haul!

In recent times, I have taken ownership of a 2010 2.0L Impreza, 4AET with full documented service history. At the moment, it has 115,000klms (70~k miles). The only slight issue I have now is mentioned below - which I am hoping to clarify and have rectified.

To very briefly explain it - at around 60-65kmh, with the foot on the gas. As soon as I let go of the gas and the car coast/decelerate, a noise not too dissimilar to a higher pitched sound "weeeeeeeeeeeeeeee" is heard. It is not obnoxiously loud, but is noticeable - a higher pitched noise - and as the car slows, the noise also winds down until around 10-15kmh, where it clears.
The noise is NOT present on acceleration - literally only with the foot off the gas/decelerating from the above speeds. Not heard at idle either.

As I mentioned above, the car has a full documented service history - the timing chain/tensioner was serviced by a Subi dealer at the 95,000klm mark, a year and a half ago. Transmission was also serviced in the last 10,000ks.

Being relatively mechanically minded (but not a pro by any standards) - it sounds like some sort of bearing noise, which I have read a little that it "may" be. Hence, I am asking this question of trying to eliminate the guesswork - if anyone does have any pointers or advice, I would greatly appreciate it.

Cheers - D
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