When I bought my Disco II 2001 I reported the following symptom to the dealer. 'When I am traveling at any speed over 25 MPH and take my foot of the accelerator and then re-apply pressure to the accelerator you can hear a clunking and feel a jerk as the car seems to lurk back into powered flight.' The response was - 'Oh yes that is drive train slap, perfectly normal. The car now has 75K miles and still makes this noise - yet there seems to be no adverse effects. has anyone ever heard of this?

 

Check your front drive shaft, you may need to rebuilt or replace it.

 

Yes it is normal as long as there is nothing else wrong.
Because it is a full time 4x4 the entire driveline is gears, gears wear and when they do there is slack in them.
Changing th gear lube every 2 years and useing 85w-140 will help to quiet it and keep it from getting worse.
It will make this noise for the rest of its life, the only fix is all new gears, but then they will make the same noise after a few thousand miles.

Now with all of this being said, like Torancis said, have the u-joints checked at a shop and also check your tire pressure, bad u-joints and tires that are to low will make it worse.

 

The one thing no one has mentioned is your drive shaft, crawl under and count how many grease fittings you have on your front shaft, should be 3 plus a plug, if not it needs to be rebuilt before it fails, and most fail and many loose there tranny also.
How often do you grease your grease your fittings, should be twice a year.

 

Wow, thanks for the instant responses to my query - I feel much better. I have been maintaining the vehicle "by the booK" so I am feeling like my drive shaft will not be falling out on the Taconic Parkway this weekend. However I will follow up on "extra" precautions you have brought up. Thanks for making this the best LandRover Forum on the net. Happy Fourth to those of you on this side of the Atlantic and sorry about that dust up in '76 to those of you in the Motherland.

Chazz

 

Following the "book" does not prevent the front driveshaft from failing, it has no grease fittings, when the u-joints dont get greased then they run without lube and then fail and you are then spending $7000 for a new transmission and driveshaft.
It is best to have your front driveshaft rebuilt using greasable parts and then making sure that they get greased at every oil change.

 

I know this is for effect and for good reason....but come on. I can get an entire truck for $5k in decent shape. I've seen parts trucks with all kind of problems but a good trans still for as little at $2k.

Nobody in their right mind is going to spend $7k at a dealer to get factory new parts to fix something like this.

Again, I understand why you emphasize this - it makes sense. But you lose credibility when exaggerating so much.

--Just a guy in the market who knows his prices.

 

Point well taken.

http://www.roverlandparts.com/1999-2...lyrebuilt.aspx

http://roverparts.com/Parts/TGD101360G.cfm

The price I was stating is if you had the dealer do it, and it seems that most people who dont know about this issue when it does happen take the truck to the dealer.

 

So, back to my question, how often do you lube your drive shafts and how many grease fittings do you have. I will bet you don't have a clue and better crawl under and take inventory.

 

I would just like to point out that drive train "slap" is NOT normal at all!!!! especially at the speeds your talking about.......My car has now done 92,000 miles, has been used offroad and there is NO slap at all........

it means something is worn out "badly". If its a series 1, then its "usually the "A" frame bush, if its a series 2, could be a number of things INCLUDING the front drive shaft.