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View Full Version : early vs late model Td5s - changes/improved reliability?



feraldisco
24th June 2007, 04:48 PM
Hi - having just purchased a 99 Td5 Disco, despite being made well aware of some of their inherent and surprisingly common engine problems, I'm wondering two things:

. Graeme Cooper reckons it's too early to say whether later model Td5s are more reliable than earlier model ones - however, another way of looking at this is whether or not there were significant changes made to the motor over its model run - if not, then there's no reason why reliability should have improved.

. Secondly, given that I've taken the plunge on a 99 model due to it being in great nick at a good price, I'm wondering what some of the pre-emptive maintenance should be to reduce the chances of a breakdown in the middle of nowhere. My main concern is with the motor as the R380 is apparently reasonably trouble free, and I've got the most basic suspension set-up of coils. So far, possible key maintenance issues ascertained from this forum are:

. maintain cooling system religiously, airflow, synthetic oil etc to reduce overheating possibility with associated melting of plastic locating dowels/head gasket blowing/head warping etc. As part of this, I think I'll be fitting a water level sensor and oil pressure gauge.

. loctite oil pump bolt.

. work out some way to stop oil spreading through wiring loom - coat it in silicon?

.fuel pump - presumably not much you can do apart from ensure good fuel (Shell), use additive and change filters regularly, but still not foolproof if the fuel pumps are an inherently inferior product.

Anything else?

Why do we do it to ourselves...I guess because there's nothing else that's as nice to drive on or off road...

Blknight.aus
24th June 2007, 05:12 PM
IMHO with the exception of the Fuel Pressure regulator youve got it nailed....

as for the oil in the harness bit... I cant remember who but one of us bought themselves a new upper harnes (the bit inside the rocker cover) dismantled it, filled it with silicon type goop and installed it. Im working on an external box that goes between the plug under the cover (your first port of call for oil in the harness) and the firewall the intention being stoping the oil getting any further than the main harness.

Id advise getting a new harness, treating it as per the bloke above and having it boxed ready to post. Give it to a friend (preferabley one that doesnt drive a TD5) so that should you get this problem on the road it can be promptly sent out too you or carry it as a spare

The fuel pressure regulator is also one that ID like to keep a spare one of in a similar setup.

Best of luck to you.

George130
24th June 2007, 05:42 PM
The only changes I heard of were now injector loom to fix the oil issue (Didn't solve the problem).
Change in the composition of the alloy used in the head?
Metal locating pins instead of the plastic ones.

If it's in good nick then just care for it. If not then start saving for a replacement motor or head rebuild.

Either way there are more good TD5's than the ones that have gone bang so enjoy.

Zute
24th June 2007, 05:50 PM
So if the loom has been replaced with a recall, it doesnt mean that the problem has been fixed ? It will still happen any time ?

CraigE
24th June 2007, 05:59 PM
Yep, can still happen again and again. Most of it is actually due to the o rings wearing.

LandyAndy
24th June 2007, 06:42 PM
The later TD5s are no better.
I know of a 2004 thats had oil in the harness and has just had a rebuild including a new head,and the Ks arent that high,as far as I know around 140000!!!!
And it was owned by a fastidious Landy fan!!!!
Andrew

feraldisco
25th June 2007, 11:23 AM
Great, the one I've just bought is about 140K k... Still it does look and go like it's been very well maintained, and the 3 year warranty gives some piece of mind... Is it a big job to remove and service the radiator on these?

ladas
25th June 2007, 11:28 AM
Great, the one I've just bought is about 140K k... Still it does look and go like it's been very well maintained, and the 3 year warranty gives some piece of mind... Is it a big job to remove and service the radiator on these?


Looks pretty easy to remove - not sure about servicing/repairing/re-core-ing though.

ak
25th June 2007, 04:11 PM
I had my TD5 serviced today and asked Graeme Cooper about some of these issues and Graeme said that the head is mainly a problem with TD5,s that are worked really hard like towing big horse floats or other heavy loads constantly in hilly country. Other than that he said the only other major issue is the oil in the injector harness which nearly every TD5 seems to get at some stage.