2009 S40 R Design with Aisin 55
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2009 S40 R Design with Aisin 55
Looking for some help
I have a 2009 S40 R Design with Aisin 55 Front Wheel trans.
Im facing a "rattle" alike noise when switching from Automatic driving to Manual using the gear box. As you aware, when switching from automatic to manual, the motor RPM increases while driving uphill, and that switch to manual makes the motor to rattle, the noise is very noticeable like if the engine was not tuned.This above scenario is the only one way where the engine showcases that issue, cuz while driving automatic there is no noise at all.
The S40 has +180 k kilometers and its regularly well maintained.
Any ideas on why this issue is happening?
Thanks in advance, Gabe
I have a 2009 S40 R Design with Aisin 55 Front Wheel trans.
Im facing a "rattle" alike noise when switching from Automatic driving to Manual using the gear box. As you aware, when switching from automatic to manual, the motor RPM increases while driving uphill, and that switch to manual makes the motor to rattle, the noise is very noticeable like if the engine was not tuned.This above scenario is the only one way where the engine showcases that issue, cuz while driving automatic there is no noise at all.
The S40 has +180 k kilometers and its regularly well maintained.
Any ideas on why this issue is happening?
Thanks in advance, Gabe
Last edited by matdeinn3; Aug 6, 2025 at 01:15 PM.
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Joined: Jul 2024
Posts: 74
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Get a OBD scan tool first and check for fault codes much cheaper that just changing parts
Last edited by JamieWelchahhh; Dec 24, 2025 at 08:14 AM.
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