Thread: ('11-'14) 2012 Impreza CVT shift delay
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Old 03-21-2012, 02:23 PM   #20
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Member#: 311152
Join Date: Feb 2012
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2012 Impreza
Ice Silver Metallic


Originally Posted by pkL View Post
Yeah I wait for it to it to shift into gear too, unless I really have to, which I haven't done yet.

On a related note do you guys notice when you park your car and pull your key out, you hear a mechanical whirling sound, is that the CVT disengaging?
That is the fuel system de-pressurizing. The extra fuel is pumped back from the throttle body to the tank through a small return line. Every fuel injected car does this, some are quieter that others. Some are a constant whirring sound, others have a rhythmic "knock". Also, if it is not that, it may just be the CD player cycling. When you turn the car on, the CD player preps itself to be ready, whether or not you are playing the CD. When you turn the car off, it cycles back to a default setting. Sometimes this is confused with the fuel return noise and vice-versa.
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