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Noise Downshifting To Third From Fourth


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#1 CdnAustinAmerica

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Posted 29 July 2026 - 05:18 PM

Noticed a few times this morning, downshifting from fourth to third gear - when I release the clutch (after shifting into third) there is a brief noise like gears meshing still? Doesn't seem to affect the car yet other than the noise.
Could my clutch be having engagement problems?
Fresh gearbox with maybe 3500 km on it.

#2 Ethel

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Posted Today, 02:31 PM

The difference between 4th and the other gears is it fastens the input gear directly to the end of the mainshaft. In every other gear the input gear rotates relative to the mainshaft on the needle roller bearing between them.  You would expect any bearing noise would more likely be permanent while the bearing's spinning, so it could be the 3rd gear synchro mesh. you could try double declutching  to see if there's any difference.



#3 Designer

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Posted Today, 04:12 PM

Hi,

 

Aah double declutching those were the days.  (still do it sometimes in my 24 Focus)

 

Paddy



#4 Spider

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Posted Today, 05:43 PM

Without hearing it, it's a stab in the dark.

The Primary Gear Bushes can make a noise when free running on the crank.

Any chance you could take some video with clear sound ? You won't be able to up-load direct to the forum, but load it somewhere else, and then put a link to it here.






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