Besides front driveshaft, what else could it be under there that causes drivetrain "slap"
Im curious to know as mine does this every so often, it helps to have ujoints greased well...

 

Not LR specific at all, but after you've checked your shafts, there is always ring and pinion lash. Let your rears and/or transfer case be abused badly enough (from poor maintenance intervals or incorrect fluids) and you'll start wearing away the faces of the gears. You'll feel that in the drive train as lash.

Depending on where it is, it's possible to shim some without replacing gears. In other places and if it's far enough gone, it's just not practical.

If you get down to that, I'm sure there are plenty of people here that can give you an idea of how far your rear yolks should turn freely with the shafts disconnected as well as for the transfer case. That's usually the quickest way to get an idea.

 

OK, now I don't feel so complacent. It's a Series II but I haven't crawled under there either. I will have to bring this up with my mechanic. So much for ignorant bliss. Thanks gain it's better to be aware. But I don't think I would invest 5K in a preventive fix, probably wouldn't spend it in a repair either. Don't really know. I'll post the results of my further investigation.

Chazz

 

The preventative measure only costs a couple of hundred dollars, the repair costs close to $5k.

 

I know im alittle late but i found out the hard way and yes it is most likely the front drive shaft as i have replaced 2 on my 2002 disco II. listen to disco mike he knows what hes talking about.

 

OK, found a new mechanic who looks pretty good. Pretty much lost faith in the dealer. Bringing it in Thursday for a complete inspection by both of us. Showed him the Thread here. I'll let you all know what I see when we put it up on the lift.

Chazz

 

Completely normal from my experience. My Disco has been known to "slap" since new. Go down the highway at speed, let off the gas and then get back on it and you will feel and sometimes hear the slap, whcih is more like a "thunk". New drive shaft did nothing to change that. You learn to let off and get back on the gas gently.