Clonkety clonk

Not being used to autobox, mine has developed an annoying clonk. Vehicle is
a 3.9V8 Disco Auto M reg 98,000 miles.

This only happens when going from 'D' to 'R' or vice versa. It only happens
if i change straight away, even going from D to N then to R does't help but
if i stop the car wait 2 or mins then change it doesn't clonk at all. Sorry
if the description is bit vauge but thats the best way to describe it. Have
checked fluid level and thats ok, fluid also looks clean. Apart from that
the 'box works fine. Any thoughts please.........

Dom J

On or around Thu, 11 Aug 2005 18:18:34 +0100, "Dom J"
<[email protected]> enlightened us thusly:

>
>Not being used to autobox, mine has developed an annoying clonk. Vehicle is
>a 3.9V8 Disco Auto M reg 98,000 miles.
>
>This only happens when going from 'D' to 'R' or vice versa. It only happens
>if i change straight away, even going from D to N then to R does't help but
>if i stop the car wait 2 or mins then change it doesn't clonk at all. Sorry
>if the description is bit vauge but thats the best way to describe it. Have
>checked fluid level and thats ok, fluid also looks clean. Apart from that
>the 'box works fine. Any thoughts please.........

check the UJs in the proshafts and the CV joints in the front axle, also
maybe splines in the driving members on any hub - I forget which of these
are dodgy, but some are.

On the 110 I used to have, it made not so much of a clonk as a bloody great
clang, if you went from F to R too quickly. Eventually decided that most of
this was wear in the front end of the transmission, and subsequently
replaceing on CV joint which started going clonkityclonk at full lock made
it better.
--
Austin Shackles. www.ddol-las.net my opinions are just that
"You praise the firm restraint with which they write -_
I'm with you there, of course: They use the snaffle and the bit
alright, but where's the bloody horse? - Roy Campbell (1902-1957)

Our M reg does the same, has since we have had it, over 5 years now. our
last range rover was the same too. If nothing is badly worn you may find its
just a little back lash on each bit which adds up to a big clonk. I find
that when changing gears, foot hard on the brake and change slowly, pausing
a second between each shift helps a lot.
Richard


"Dom J" <[email protected]> wrote in message
news:[email protected]...
>
> Not being used to autobox, mine has developed an annoying clonk. Vehicle
> is
> a 3.9V8 Disco Auto M reg 98,000 miles.
>
> This only happens when going from 'D' to 'R' or vice versa. It only
> happens
> if i change straight away, even going from D to N then to R does't help
> but
> if i stop the car wait 2 or mins then change it doesn't clonk at all.
> Sorry
> if the description is bit vauge but thats the best way to describe it.
> Have
> checked fluid level and thats ok, fluid also looks clean. Apart from that
> the 'box works fine. Any thoughts please.........
>
> Dom J
>
>
>

"Dom J" <[email protected]> wrote in message
news:[email protected]...
>
> Not being used to autobox, mine has developed an annoying clonk. Vehicle
is
> a 3.9V8 Disco Auto M reg 98,000 miles.
>
> This only happens when going from 'D' to 'R' or vice versa. It only
happens
> if i change straight away, even going from D to N then to R does't help
but
> if i stop the car wait 2 or mins then change it doesn't clonk at all.
Sorry
> if the description is bit vauge but thats the best way to describe it.
Have
> checked fluid level and thats ok, fluid also looks clean. Apart from that
> the 'box works fine. Any thoughts please.........
>
> Dom J
>
>
When you drive inevitably you get transmission windup due to the wheels
travelling different distances the diffs take out most of this but you still
get some loading, when you change gear some of this is released and then
the slack is taken up thats when you get the clonk its down to that little
bit of play in the components. If you want to get mucky delect neutral and
set the range selector to N as well - lie under the car in front of the rear
diff now grasp the prop shaft then twist clockwise and anti clockwise you
should feel the play and hear a gentle clonk its not really a worry
Derek

so Dom J was, like...
> Not being used to autobox, mine has developed an annoying clonk.
> Vehicle is a 3.9V8 Disco Auto M reg 98,000 miles.
>
> This only happens when going from 'D' to 'R' or vice versa. It only
> happens if i change straight away, even going from D to N then to R
> does't help but if i stop the car wait 2 or mins then change it
> doesn't clonk at all. Sorry if the description is bit vauge but
> thats the best way to describe it. Have checked fluid level and
> thats ok, fluid also looks clean. Apart from that the 'box works
> fine. Any thoughts please.........
>
> Dom J

My RRC did that when I got it and was still doing it two years later when I
sold it. No better, no worse.

"They all do that, Sir."


--
Rich
==============================
Disco 300 Tdi auto
S2a 88" SW
Tiggrr (V8 trialler)