300 Tdi making an odd noise

[Mad Matt]

HI all, a mate of mine's Defender is making an odd noise which none of
us can figure out where it is coming from or what it is. At first we
suspected it was the fuel pump (as it sounded like the sound was
coming from there), but after having that checked out by a bosch
approved mechanic we have found out it is not the case. The sound is a
scrapping noise sounding almost like a warn bearing but with a bit
more of a tick to it. Quite hard to describe. The sound seems to be
more high pitched when the engine is cold and a little more scrappy
when it is hot. The Landy seems to run fine but the noise is becoming
louder.
Does anybody have any idea to what could be causing this?

[Renzo Blasa]

Take the serpentine and air con belts off. Run the engine for a few seconds.
Does the noise dissappear? If yes spin all pulleys, water pump, power
steering pump and see which is the most likely. If no then the noise must be
coming from the engine, turbo, pump, etc.

Ciao
Renzo

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[Dave Morgan]

Get hold of a mechanics stethoscope. It is great for tracking down noises!

Dave

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[STABILITAS]

Have a look at the U-joints. Try to turn it physically by hand. I have seen
this on a P38 as well as a Disco 2. Sometimes no noise and sometimes it
sounds like "bells ringing". It gets worse and worse and you may end up with
oils seals torn apart and even great damage when one of those come loose on
the run. Not easy to diagnose on the sound as it changes all the time due to
the fact that the prop shaft is a hollow pipe (in toatal it covers the
length of the vehicle) and the way the u-joint changes all the time from
start to start.

Regards

Attie Smit
Land Rover Owners Club - Trophy Secretary
Tel : (011) 886 7199
Fax : 086 542 6994
Cell : 083 292 2412
E-Mail : tro...@lroc.org.za

-----Original Message-----
From: lroc-te...@googlegroups.com
[mailto:lroc-te...@googlegroups.com] On Behalf Of Mad Matt
Sent: 02 August 2010 09:27
To: LROC Techtorque Discussion Forum
Subject: [LROC Techtorque] 300 Tdi making an odd noise

--

[Hendri Downing]

Hi,

I have a similar noise on my Td5 - it started about two weeks ago. Started
off sounding like a stone stuck between the disc and brake pads (scraping
noise) but now its just a rattle like a small bell. Jacked the landy up
and turned all the wheels and propshaft but no noise - it only appears when
driving at speeds below 40km/h and then goes away at higher speeds (or I
cant hear it). ALso had the car at the local mechanic and they cannot find
where the sounds comes from. Any suggestions welcome.

Thanks

----- Original Message -----
From: "STABILITAS" <stabi...@telkomsa.net>
To: <lroc-te...@googlegroups.com>

[Pieter Erasmus]

Check the circular steel plate (oil seal protector) on the prop-shaft
where the pinion shaft enters the diff casing.

Pieter

[Derrick Slogrove]

Hendri,

 

This may be totally unrelated to your noise - the lower bracket on the front brake dust shield cracked off on my 110 and the noise made was very similar - alternating between bell like rattle and scraping noise as the dust shield touched the disk

 

 

Derrick

[STABILITAS]

Did you actually turn each prop shaft by hand from underneath the vehicle.
Also push it up & down as well as side ways. You have actually desbribe the
noise as I have heard from my Disco 2's front prop shaft.

Regards

Attie

-----Original Message-----
From: lroc-te...@googlegroups.com
[mailto:lroc-te...@googlegroups.com] On Behalf Of Hendri Downing

[Hendri Downing]

Thanks to all - I am on my home now to check all these.

Regards

[Taun]

Hi hendri, sounds to me like yours could be the dust covers over the break discs. If they come loose they can sound that way.

Matt, have you checked the tappets for tightness and clearance? That could explain the ticking, but not the scraping.

[Hendri Downing]

Morning,

I have checked the dust covers and cant find any loose, the universal joints
have no play and propshaft seem perfect. I have found the cover over the
rear diesel filter to be loose and rattling as well as one as one suspect
shock absorber. Any volunteers for being strapped to the bottom of my landy
to pinpoint the noise :-)

While inspecting the landy I also noticed a small oil leak coming from what
looks like near the turbo (landy has done 200 000km) - turbo oil feed?

[Mike Ilsley]

Hi Hendri

You don't say if the noise pitch changes are at engine speed or road speed?

Have you checked the hand brake drum? May have dirt in it? Or the shoes may have come loose?

Rgds
Mike

Morning,

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[Hendri Downing]

Hi Mike,

The noise pitch does seem to corrospond with the speed of the wheel. I
thought of the handbrake, but if I pull it up while the noise is there it
does not go away.

Thx

[Mike Ilsley]

And you say you have checked the dust guards on the disk brake rotors? One of mine got slightly bent at Sandstone, and was lightly touching the rotor.

That Oil leak is serious, I had to replace the turbo on the TDi at about 260 KKm, and when I opened it, it was shot! If you run it too long you risk the turbo disintegrating and parts going into the engine..

[Hendri Downing]

Mike,

Thanks. Its definately not the dust guard and the scraping noise has all
but gone, but now I am left with what sounds like small bells - very
irritating. I will be jacking the car up this afternoon ( all four wheels)
and letting it run in gear to see if I can find the problem. The thing is
that it only starts making the noise when the car is moving on uneven
surface. It also seems to make the scraping noise only when I hit a bump or
turn left and also seems more prevalent when the car is not under load. When
hitting a speed bump it seems to trigger the scraping noise and then in 5
secs it is gone - very difficult to pinpoint. Been thinking that I must
just drive untill something either falls of or breaks off!

[Mike Ilsley]

Hendri

Quick question, do you find that when driving on a dust road, you have to pump the brakes when you want to use them. The reason for this is often loose wheelbearings which allow the disk/rotor to wobble and force the pads back into the cylinders. I am wondering if you don't have the same thing, allowing the wheels to wobble and the rotors to catch the dust covers..

Anyway, good luck, and please be very careful under the vehicle while it is running on stands!

M

[Jaco Prinsloo]

Hi All

Reading all the comments I suddenly remember a Situation I had a few years ago on my Disco. It was like a grinding sound under certain road conditions and speeds. After months of investigating and much irritation I found a small stone between the chassis and body at the rear mudgaurd. On removing it I sat with a stone with two polished sides and the end of the irritation

Jaco Prinsloo

[Gys Vermeulen]

Maybe it the one that I had - was on my my to PTA - the day or two before I checked the bearings because I also heard the noise. At BFN i had it checked quickly - in the end it was the brakepads or sand between the brakepad and disks. At lower speed it made more of a grinding sound while at hire speeds it tends to sounds like the "finger rubbiing on the wineglass edge" A few runs over the grinding wheel for the pads solved the problem.

Groetnis
Gys

Gys Vermeulen
Phambili Africa Safaris
Registered Overland Guide GP2096, Animal Scientist
email address: gys.ve...@gmail.com
Cell RSA: (+27)(0)828243473 or 0834511551
Office: 040 657 7599
Fax: 040 653 8036 /  0865658769
Skype: gysenalida
Dikgomo ke Banka Yarona
1984 One-Ten V8 Hardtop
2002 LandRover 130 doublecab

[Mad Matt]

Back to topic... The noise is audible when the car is idling and when
it is moving, the motor(and rest of car) only has 140 000km on it
since new and has not had any work done it except for the normal
services. The noise is definately coming from the engine has
progressively gotten louder over the last 3 weeks, I've been trying to
diagnose where the sound is coming from to take the appropriate action!
Its deffinatly coming from the injector pump/ diesel pump side of the
engine so I've been thinking either air con belt or pullies, the cam-
belt/ pullies or the injector pump. I've taking the air con belt off
and taken off the tensioner so I could listen to the cam-belt, the
noise did not change and was still undetectable. I've also taken the
car to a bosch work shop where they concluded it was not the pump but
I am fairly convinced they are wrong as the sound seems to be coming
from there! Any other suggestions or other diesel specialists in the
Sandton area would be much appreciated.

Does anyone have any idea why a R380 gearbox would malfunction by
"hiding" 4th and reverse only to fix itself a day later? I have
checked the linkages and there is nothing loose. would it be possible
that with the recent oil change old left over dirty oil may have
clogged the oil pump? Has anyone had any simular experiences?

Thanx a mil!

Matt

[Mike Ilsley]

Have you checked the crank pulley?

Sent from my HTC

Thanx a mil!

Matt

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[Hendri Downing]

Good Morning,

I had the LAndy on stands yesterday and as luck would have it I found the
culprit very quickly after removing the propshafts and all the wheels to
make sure its not the bearings . The problem was actually very small - the
mud shield that is supposed to be shrunk onto the Flange was loose and
spinning around on the flange shaft at the front diff. Thanks to all for the
advise and I think Pieter was closest with his advise. The advantage of
looking for the solution to your problem is that you spend time under your
landy and then notice what other maintenace need to be done!

Thx and regards

[Bertus Bekker]

Perhaps you can speak to Sean Riley at The Gearbox Company in Midrand about the gears that went AWOL, Matt - he knows the R380 very well.

Regards

[Hendri Downing]

Hi,

 

Also try Mark at Adventure Rovers in Kaya Sands.  Helped us once to repair gearbox over the phone! he knew exactly what was wrong after explaining what had happened.

 

Regards

[Walter]

Hi Guys

All the above posts just go prove that there really is only one REAL
Land Rover and that's the trusty old 109" Series 3. One never hears
any funny noises, only the engine, mainly because all other noises are
drowned out, including the wife's nagging and the kids murdering each
other in the back. Oil leaks are also not a problem, they're a feature
- how else does one lubricate your chassis to prevent rust.

Cheers
Walter :-)

PS.I have found that slip streaming trucks is a great way to save
fuel, about ½ m from the trucks bumper is good distance to keep, that
is when I’m able to keep up with them because I don’t have enough
power to overtake :-(

[Mad Matt]

Walter- I sold my Series 3 2weeks ago. It was a brilliant vehicle but
couldn't handle the lack of power,the noise or the hard suspension
anymore. Its on its way up to Tanzania as we speak!
Thanx for the advice guys, going to pull my mates Defender apart this
weekend, its definately a bearing somewhere that is causing the issue,
will let you know what it is when I know.
Spoke to Sean about my gearbox, but he wants me to bring it in(he
knows my clutch release bearing is in need of some tlc), guess I will
just have to kill 2birds with one stone and get the box checked out
when I do the clutch.

cheers
Matt

[Jakob Jordaan]

Matt,

 

I have used a cut off hosepipe to locate sounds in the past – put the one open end in your ear and the other all over the engine.  You will clearly identify the source that way. – watch out for moving parts though!

 

Groete

 

Jakob

082-808-1422