All Things Mk5 > How to Guides / Troubleshooting

Gearbox whine/noise?

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pudding:
Sounds normal to me tbh.  The GTI box's gears are cut differently depending on the gear and torque handling.  You don't tend to hear 5th / 6th as they are smaller and are a full helical cut, which is quieter.

The big gears in this pic are the noisy ones, usually reverse & 1st-3rd, and the smaller gears 4th-6th are the quiet ones.

dadjokes:

--- Quote from: f00glee on May 22, 2017, 03:53:45 pm ---I don't have an answer to this but may experience the same noise you mention.

On roundabouts made of hard/raised surfaces (so more sound reflection) I hear a whine when in second/third gear at something like 3/4krpm. This is also only heard with light throttle input either maintaining constant speed or very light acceleration. Engine temperature seems to make no difference and I don't believe it's gear number related as I'm sure the noise would exist in 1st or 4th too, but these gears round roundabouts are rare to never. The pitch of the noise changes with RPM and seems to disappear when higher throttle inputs are applied (under moderate acceleration) and so never heard during straight driving where rpms are lower for constant speed or higher loads applied during acceleration. Though if I went into a built up area and maintained the RPMs and gears i've mentioned, the noise would be heard reflecting off e.g. a brick wall a meter away.

Its mostly heard by me when coming up to a medium sized roundabout, dropping into 2nd on approach; anticipating a swift exit. Maintaining speed round the roundabout at 3-4k rpm the whine is at its loudest disappears soon as I put my foot down or slow to sub 2.5krpm

Not really audible in the cabin but sounds like the right hand side of the engine bay and easily heard bouncing off heard surfaces with the window down.

My though was either gearbox or turbo whine. I've owned my car for a year and its always been there, never gotten any better or worse so now consider it a "feature". If anyone has any ideas or similar experiences I'd be interested to hear them!

--- End quote ---

Thank you for this excellent description! My 57 plate does this exact same noise - 2nd coming off roundabouts there's a high-pitched rising whine. Unless I missed another topic where you describe your gearbox exploding, I take it nothing bad has happened since this post?

f00glee:

--- Quote from: dadjokes on December 09, 2018, 08:19:31 pm ---
--- Quote from: f00glee on May 22, 2017, 03:53:45 pm ---I don't have an answer to this but may experience the same noise you mention.

On roundabouts made of hard/raised surfaces (so more sound reflection) I hear a whine when in second/third gear at something like 3/4krpm. This is also only heard with light throttle input either maintaining constant speed or very light acceleration. Engine temperature seems to make no difference and I don't believe it's gear number related as I'm sure the noise would exist in 1st or 4th too, but these gears round roundabouts are rare to never. The pitch of the noise changes with RPM and seems to disappear when higher throttle inputs are applied (under moderate acceleration) and so never heard during straight driving where rpms are lower for constant speed or higher loads applied during acceleration. Though if I went into a built up area and maintained the RPMs and gears i've mentioned, the noise would be heard reflecting off e.g. a brick wall a meter away.

Its mostly heard by me when coming up to a medium sized roundabout, dropping into 2nd on approach; anticipating a swift exit. Maintaining speed round the roundabout at 3-4k rpm the whine is at its loudest disappears soon as I put my foot down or slow to sub 2.5krpm

Not really audible in the cabin but sounds like the right hand side of the engine bay and easily heard bouncing off heard surfaces with the window down.

My though was either gearbox or turbo whine. I've owned my car for a year and its always been there, never gotten any better or worse so now consider it a "feature". If anyone has any ideas or similar experiences I'd be interested to hear them!

--- End quote ---

Thank you for this excellent description! My 57 plate does this exact same noise - 2nd coming off roundabouts there's a high-pitched rising whine. Unless I missed another topic where you describe your gearbox exploding, I take it nothing bad has happened since this post?

--- End quote ---

Nope, no explosions!  :signLOL:

Still not any better or worse, now 2.5 years in my ownership. Have had a gearbox oil change amongst other maintenance since this post too.

dadjokes:
Glad to hear it! I take it the gearbox oil change didn't make a difference?

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