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Discussion Starter #1
My car seems to have developed gear box/gearchange noises
when changing gear at the moment drive is taken up.

For sure this is NOT the noise you get when the ABS tests
itself at 12mph when the car is first used.


No, this only seem to be noticable when the gearbox is nice
and hot, say at least after 10-15 miles of driving - in other words when the oil in there (assuming there is enough
in there) is nice and thin.

Its most noticable on 1st to 2nd changes, and less so on
2nd to 3rd. You can hear a dull klunk/thud from the gearbox
at the moment drive is taken up. This can also be
felt through the gearchange mechanism.

I remember seeing a post from somebody who had their gearchange linkage adjusted/tightened, and also somebody who had their gearbox replaced. What problems were they experiencing, and did the fix resolve the situation?

Searching through the forum it seems there is a lot of confusion between this ABS self test thing, and genuine gearbox noises.......


By the way, car is Mid Nov build and has covered 1400 miles
 

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Mine does the same thing

I get exactly the same noise from my cooper and it too is more noticable when it's warmed up. I just assumed they all do it and wasn't worried about it but if that's not the case I'll report it to the garage.

What's this ABS thing though? Mine makes a noise at 12mph after an engine start. I actually assumed it was something like the doors locking (boot??) but never really bothered to check it out. So what is the ABS actually doing?
 

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Discussion Starter #3
OK, to answer you question so that subsequent replys
are about the gearbox issue only...

When the car is first driven after being started, the ABS
system performs a test, which includes actuating
one or more if its control valves. This occurs at 12mph (20 kph, and can be heard as brief clicks/thud from the bulkhead
area of the car.


Aa I said, I would like to keep any more posts limited
only to the gearbox symptoms I have described. Sorry
if this sounds abnoxious, but often these types of thread
have answers which are solutions to problems that are not
the same as the original post. This usually results
in the orignal question being lost or never really
answered, and a lot of general confusion.

Chris
 
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