Thread: td5 engine life

Originally Posted by scarry

thanks everyone dave (blknight) your post was excellent.it should be read by all td5 owners.
how do you know if the egr needs repair?
also this later td5 has had only one rocker cover gasket and has no oil in the injector harness
maybe they did some changes to this model engine
the 1999 one i had need a new rocker cover every service and injector harnesses every so often
i have extended factory warranty on present vehicle so keep a very good eye on what is going on under the bonnet & elsewhere

i have done some hard work in the disco td5s i have own ed & never seen the temp guage move.you can often hear the viscous fan go on & off.
once in some heavey sand work on a 38c day i had the auto tranny high temp light come on. i did what the manual said give it a rest, & did not have any further problems

By the book if you take the rocker cover off you are supposed to replace it. Theres a couple of tricks you can do to not have to BUT you have to be very carefull when doing it Its the same rocker cover on all the td5 engines. If you get the trick wrong the thing will leak like a sieve. I've pulled mine twice, once to do a temp repair on the injector harness and the second to replace it (I replaced mine on the second pass)

the EGR giving problems is typically indicated by rough running and poor power. It caused by an accumulation of cabon on the valve faces preventing them from closing and letting exhaust gasses past it into the air intake side of business.. the fault shares similar symptoms to delaminating turbo -intercooler hoses, oil in the injection harness, contamination of the MAP sensor, failing fuel pump. do the checks for these when you think youve got the EGR fault and if in doubt replace the intercooler hoses with silicone ones and clean the EGR.

Just finished spending $3500 on replacing head gasket, radiater, t/stat, all hoses and the viscous fan. The wire harness was also done, as well as the broken studs on the exhaust manifold and the fuel regulator. I bought this knowing these problems existed and after buying the car and doing the repairs I still have not spent $15k in total, lucky me so far!!
All this work was done by Grahme Cooper in Sydney and I have immense respect for this guy, I have been taking my last four rovers to him for over 20 years. The D2 has some issues but know more than patrols, cruisers or any other car.
Maintenance is the key to longevity and being aware of existing known issues and dealing with them.
Long live Land Rover, best by far!!!

By the way, as to putting OAT coolant in TD5 motors, this COULD be a myth! According to Grahme Cooper, ordinary GREEN coolant is all they ever use in TD5's, they just recommend change it every 12 months regardless and you will not have any issues, they haven't and I would assume they would know.
(this will open up a can of worms now won't it??)

re- green coolant. i have been told the same thing by TRS in adelaide. i was told that as the td5's develop small coolant leaks that are exposed to the air, the oat coolant wont form a crust and in effect reseal itself. the regular green stuff, o nthe other hand, will. also they havent seen any evidence of it causing internal problems.

Originally Posted by jf1056

By the way, as to putting OAT coolant in TD5 motors, this COULD be a myth! According to Grahme Cooper, ordinary GREEN coolant is all they ever use in TD5's, they just recommend change it every 12 months regardless and you will not have any issues, they haven't and I would assume they would know.
(this will open up a can of worms now won't it??)

not really coolants aint coolants.

depending on which particular green coolant they are using it could be fine if the concentration is right and when they do the change they flush the system properly.

of all the coolants Im aware of non have a 12month use life the shortest is 2 years and they're changing it every year.

this has the advantage of you can see what the cooling system is doing every year and knowing the coopers boys they will be doing the right thing pretty much all the time.

But that costs ya.

factor in the cost of a change every year for 3 years as opposed to the slightly increased cost of the OAT every 3 4 or 6 years depending on which OAT manufacturer you want to use.