Disco II noises...

Hi,

OK you are all into series Landrovers not warm, dry, comfortable,
Discos but perhaps you can answer a few little queries on my recently
aquired Disco II (2001, TD5, Y Reg, 30,000miles). B-)

1) Occasionally a few seconds after starting there is a short drumming
noise that appears to come from the bulkhead ares just on the drivers
side of center.

2) Hitting a bump moderatley hard (sleeping policeman, pot hole) will
trigger a noise that is probably something to do with the traction
control but the TC light doesn't come on.

3) A few tens of seconds after stopping the engine, there is an
compressed air escaping noise coming from midway back underneath.

4) Not a noise but an indicator light sequence. Some times at switch
on whilst waiting for the glow plug light to go out both indicator
lights relating to the air suspension come back on after the self test
for perhaps 5s then go out and stay out. No obvious noises.

For all of the above points are these "normal", something needing
investigation or something to be worried about.

TIA.

--
Cheers [email protected]
Dave. pam is missing e-mail

Dave Liquorice wrote:

> Hi,
>
> OK you are all into series Landrovers not warm, dry, comfortable,
> Discos but perhaps you can answer a few little queries on my recently
> aquired Disco II (2001, TD5, Y Reg, 30,000miles). B-)
>
> 1) Occasionally a few seconds after starting there is a short drumming
> noise that appears to come from the bulkhead ares just on the drivers
> side of center.

ABS pump calibrating IME. Nothing to worry about.


>
> 2) Hitting a bump moderatley hard (sleeping policeman, pot hole) will
> trigger a noise that is probably something to do with the traction
> control but the TC light doesn't come on.

It is the TC getting ready to trigger. What you hear is actually the pump
spinning up, not the TC itself kicking in. Annoying, but not a problem.

>
> 3) A few tens of seconds after stopping the engine, there is an
> compressed air escaping noise coming from midway back underneath.
>

Does the car have Self Levelling Suspension or ACE? If it did I'd suggest
it's one of those systems venting.

> 4) Not a noise but an indicator light sequence. Some times at switch
> on whilst waiting for the glow plug light to go out both indicator
> lights relating to the air suspension come back on after the self test
> for perhaps 5s then go out and stay out. No obvious noises.
>

No ideal.

> For all of the above points are these "normal", something needing
> investigation or something to be worried about.
>

P.

Dave Liquorice wrote:
> Hi,
>
> OK you are all into series Landrovers not warm, dry, comfortable,
> Discos but perhaps you can answer a few little queries on my recently
> aquired Disco II (2001, TD5, Y Reg, 30,000miles). B-)
>
> 1) Occasionally a few seconds after starting there is a short drumming
> noise that appears to come from the bulkhead ares just on the drivers
> side of center.
>
> 2) Hitting a bump moderatley hard (sleeping policeman, pot hole) will
> trigger a noise that is probably something to do with the traction
> control but the TC light doesn't come on.
>
> 3) A few tens of seconds after stopping the engine, there is an
> compressed air escaping noise coming from midway back underneath.
>
> 4) Not a noise but an indicator light sequence. Some times at switch
> on whilst waiting for the glow plug light to go out both indicator
> lights relating to the air suspension come back on after the self test
> for perhaps 5s then go out and stay out. No obvious noises.
>
> For all of the above points are these "normal", something needing
> investigation or something to be worried about.
>
> TIA.

I have a late DiscoII Facelift model. The noise heard having hit a pot hole
or temporarily lost grip is the traction control system. The air noise
assuming you have SLS is the system de-pressurising.

--
Darren Griffin
PocketGPSWorld - www.pocketgpsworld.com
The Premier GPS Resource for News, Reviews and Forums

On Sun, 09 Jan 2005 17:31:46 GMT, Paul S. Brown wrote:

> ABS pump calibrating IME. Nothing to worry about.

Why never heard of ABS doing this before...

> It is the TC getting ready to trigger. What you hear is actually the
> pump spinning up, not the TC itself kicking in. Annoying, but not a
> problem.

Understandable, makes you jump the first time though.

> Does the car have Self Levelling Suspension or ACE? If it did I'd
> suggest it's one of those systems venting.

Both. Just worrying, I'm pretty sure the User Manual doesn't mention
these noises, though I'll have another read (when all else fails, read
the instructions).

>> 4) Not a noise but an indicator light sequence. Some times at
>> switch on whilst waiting for the glow plug light to go out both
>> indicator lights relating to the air suspension come back on after
>> the self test for perhaps 5s then go out and stay out. No obvious
>> noises.
>
> No ideal.

The initial self test I can understand but having both come back on
again after that is again unnerving. You expect warning lights to warn
you of something sort of important once they have gone through the
self test routine. Not just come on because it's "normal" for them to
do so, they must mean something.

Anyway I'll get the book out and have another read but not tonight to
windy, cold and wet to go outside.

--
Cheers [email protected]
Dave. pam is missing e-mail