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Discussion Starter #1
Can anyone give me some hints on an oil problem? I have a 1998 Disco
300TDI.

The symptoms are:
- Start up (engine cold), no problem
- after about half hour's drive (engine now reasonably warm) the oil light
comes on a tickover (c700-750 RPM)
- a short while later, I cannot get the oil light to come on at all, so my
friendly local garage (who run a 110 with a 300TDI) think I'm going mad.
- yesterday, we drove for about half an hour at 70mph and when I slowed
down, the oil light came on at about 1100RPM

I've had the car in the garage a couple of times over this, but the mechanic
says that he can't find anything wrong - the engine sounds OK; pressure
readings are OK. He thinks it might be the pressure switch - does this seem
reasonable? It has Shell oil of the correct grade and a new filter (first
step was an oil change).

I'm open to suggestions . . .

Damien
 
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Discussion Starter #2
"DON" <[email protected]> wrote in
news:[email protected]:

> Can anyone give me some hints on an oil problem? I have a 1998 Disco
> 300TDI.
>
> The symptoms are:
> - Start up (engine cold), no problem
> - after about half hour's drive (engine now reasonably warm) the oil
> light
> comes on a tickover (c700-750 RPM)
> - a short while later, I cannot get the oil light to come on at all,
> so my
> friendly local garage (who run a 110 with a 300TDI) think I'm going
> mad.
> - yesterday, we drove for about half an hour at 70mph and when I
> slowed
> down, the oil light came on at about 1100RPM
>
> I've had the car in the garage a couple of times over this, but the
> mechanic says that he can't find anything wrong - the engine sounds
> OK; pressure readings are OK. He thinks it might be the pressure
> switch - does this seem reasonable? It has Shell oil of the correct
> grade and a new filter (first step was an oil change).
>
> I'm open to suggestions . . .
>
> Damien
>
>
>
>
>
>


Not a Land Rover, but in the dim and distant recesses of my mind I seem
to remember having a similar problem that was solved by replacing the
oil pump. But I'm not a mechanic! On that particular vehicle, it was a
fairly easy job too. I think it might have been a Peugeot 504 -- but
then I don't think it is easy to take the sump off a 504, so....

....and, then again, you say the pressure readings are OK. That's the oil
pressure readings, right??

Derry
 
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Discussion Starter #3
DON <[email protected]t.co.uk> uttered summat worrerz funny about:
> Can anyone give me some hints on an oil problem? I have a 1998 Disco
> 300TDI.
>
> The symptoms are:
> - Start up (engine cold), no problem
> - after about half hour's drive (engine now reasonably warm) the oil
> light comes on a tickover (c700-750 RPM)
> - a short while later, I cannot get the oil light to come on at all,
> so my friendly local garage (who run a 110 with a 300TDI) think I'm
> going mad. - yesterday, we drove for about half an hour at 70mph and
> when I slowed down, the oil light came on at about 1100RPM
>
> I've had the car in the garage a couple of times over this, but the
> mechanic says that he can't find anything wrong - the engine sounds
> OK; pressure readings are OK. He thinks it might be the pressure
> switch - does this seem reasonable? It has Shell oil of the correct
> grade and a new filter (first step was an oil change).
>
> I'm open to suggestions . . .
>
> Damien


If the pressures are right then replace the switch. For what it costs not
worth doing anything else till that has been swapped.

Lee D
 
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Discussion Starter #4
DON wrote:

>
> I've had the car in the garage a couple of times over this, but the mechanic
> says that he can't find anything wrong - the engine sounds OK; pressure
> readings are OK. He thinks it might be the pressure switch - does this seem
> reasonable?


It's the first thing I'd replace in that situation


--
EMB
 
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Discussion Starter #5
Yeah, twas the pressure switch on mine.

"EMB" <[email protected]> wrote in message
news:[email protected]
> DON wrote:
>
>>
>> I've had the car in the garage a couple of times over this, but the
>> mechanic says that he can't find anything wrong - the engine sounds OK;
>> pressure readings are OK. He thinks it might be the pressure switch -
>> does this seem reasonable?

>
> It's the first thing I'd replace in that situation
>
>
> --
> EMB
 
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Discussion Starter #6
Well, thanks for those replies - the father in law was convinced that it
'had to be' bearings. I accept that it still may be, but the combined
evidence of the mechanic who fiddles with the car (and lots of other local
Land Rovers) and this group has left me with a little more comfort.

Damien
 
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Discussion Starter #7
In message <[email protected]>, DON
<[email protected]> writes
>Can anyone give me some hints on an oil problem? I have a 1998 Disco
>300TDI.



I have only ever replaced oil pressure switches on 1998 300 tdi engines.
They must have had a bad lot at the factory.
--
Marc Draper
 
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Discussion Starter #8
On or around Sun, 11 Dec 2005 19:17:39 +0000, Marc Draper
<[email protected]> enlightened us thusly:

>In message <[email protected]>, DON
><[email protected]> writes
>>Can anyone give me some hints on an oil problem? I have a 1998 Disco
>>300TDI.

>
>
>I have only ever replaced oil pressure switches on 1998 300 tdi engines.
>They must have had a bad lot at the factory.


hmmm. summat to think about. We were contemplating hunting a low-mileage
late TDi to replace the current one, in due course.

on which subject, sort of...

what are the TD5s like to work on for the average bod without testbook and
so forth?
--
Austin Shackles. www.ddol-las.net my opinions are just that
Blue: The sky is blue for a reason. Blue light is a source of strength
and harmony in the cosmos. Create a blue light in your life by
telephoning the police
from the Little Book of Complete B***ocks by Alistair Beaton.
 
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Discussion Starter #9
In message <[email protected]>, Austin Shackles
<[email protected]> writes


>
>what are the TD5s like to work on for the average bod without testbook and
>so forth?



I have got full diagnostics for Td5 and sometimes you still have to
guess !!!!!

That said I don't seem to be having to "open" td5 engines as often as I
do 300 td's.
--
Marc Draper
 
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Discussion Starter #10
On or around Sun, 11 Dec 2005 22:28:48 +0000, Marc Draper
<[email protected]> enlightened us thusly:

>In message <[email protected]>, Austin Shackles
><[email protected]> writes
>
>
>>
>>what are the TD5s like to work on for the average bod without testbook and
>>so forth?

>
>
>I have got full diagnostics for Td5 and sometimes you still have to
>guess !!!!!
>
>That said I don't seem to be having to "open" td5 engines as often as I
>do 300 td's.


an earlyish TD5 is another option, in looking for a more-recent disco. When
did they retune the TD5 for more low-end grunt? ISTR the originals being
rather useless off-idle.

--
Austin Shackles. www.ddol-las.net my opinions are just that
"Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25
 
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Discussion Starter #11
"Austin Shackles" <[email protected]> wrote in message
news:[email protected]
> On or around Sun, 11 Dec 2005 22:28:48 +0000, Marc Draper
> <[email protected]> enlightened us thusly:
>
>>In message <[email protected]>, Austin Shackles
>><[email protected]> writes
>>
>>
>>>
>>>what are the TD5s like to work on for the average bod without testbook
>>>and
>>>so forth?

>>
>>
>>I have got full diagnostics for Td5 and sometimes you still have to
>>guess !!!!!
>>
>>That said I don't seem to be having to "open" td5 engines as often as I
>>do 300 td's.

>
> an earlyish TD5 is another option, in looking for a more-recent disco.
> When
> did they retune the TD5 for more low-end grunt? ISTR the originals being
> rather useless off-idle.
>
> --
> Austin Shackles. www.ddol-las.net my opinions are just that
> "Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25


Don't know when the ECU was tweaked, but mine is a MY2003 and it's almost
impossible to stall.
The secret seems to be not to touch the accelerator - just let the clutch up
while on tick-over and let the ECU do the work. Once you touch the loud
pedal, you're on your own.
Joskin
 
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Discussion Starter #12
On Mon, 12 Dec 2005 15:29:56 -0000, Joskin wrote:

>> When did they retune the TD5 for more low-end grunt? ISTR the
>> originals being rather useless off-idle.

>
> Don't know when the ECU was tweaked, but mine is a MY2003 and it's
> almost impossible to stall. The secret seems to be not to touch the
> accelerator - just let the clutch up while on tick-over and let the
> ECU do the work. Once you touch the loud pedal, you're on your own.


My 2001 DII TD5 works like that, very handy for low speed maneuvering
or crawling traffic jams. Pick a gear (inc low) for the speed you want
to go at and just let it trundle along. Starting from stationary in
3rd needs fine clutch control and can be a bit lumpy once moving but
reverse, 1st and 2nd are great.

As you say touching the loud pedal without really meaning it or
letting the clutch up before the revs have picked up if you have
pressed it is the easy way to stall.

--
Cheers [email protected]
Dave. pam is missing e-mail
 
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Discussion Starter #13
....and Joskin spake unto the tribes of Usenet, saying...


> "Austin Shackles" <[email protected]> wrote in message


>> When
>> did they retune the TD5 for more low-end grunt? ISTR the originals
>> being rather useless off-idle.


> Don't know when the ECU was tweaked, but mine is a MY2003 and it's
> almost impossible to stall.


Mine was a MY2001 and was difficult *not* to stall, so do the math, as they
say...

--
Rich
==============================
Disco 300 Tdi auto
S2a 88" SW
Tiggrr (V8 trialler)
 
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Discussion Starter #14
Richard Brookman wrote:

> ...and Joskin spake unto the tribes of Usenet, saying...
>
>
>> "Austin Shackles" <[email protected]> wrote in message

>
>>> When
>>> did they retune the TD5 for more low-end grunt? ISTR the originals
>>> being rather useless off-idle.

>
>> Don't know when the ECU was tweaked, but mine is a MY2003 and it's
>> almost impossible to stall.

>
> Mine was a MY2001 and was difficult *not* to stall, so do the math, as
> they say...
>


MY1999 (first production) and was quite difficult to stall - moreso than a
petrol engined motor, less so than the 2.7TD Maverick I had before it.

P.
 
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Discussion Starter #15
On Mon, 12 Dec 2005 19:14:15 -0000, Richard Brookman wrote:

> Mine was a MY2001 and was difficult *not* to stall, so do the math,
> as they say...


Except my 2001 is fine but the lag between pressing the go peddle and
anything happening can catch you out. Fly by wire is OK provided you
realise that the electronics has to work out what you want, then tell
the engine, that has to respond. It's not as instant as a stiff wire
opening a butterfly valve and pump to squirt more fuel in pronto...

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

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I had that car when it first came out and it was nothing but problems. No youre not going mad all you need to do is to clean the oil valve by reving the car up to 12,000 revs and keep it holding at that for a few minutes. Trust me it works.
 
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