Disco 2 drive binding knocking

59viper · Oct 22, 2022

Afternoon my 2003 Disco td5 has developed a kind of binding/slowing and knocking sound.
The knocking is constant but now when turning it's almost like it's in reverse and forward until I change a gear. Had drive shafts checked and fine, been told to drive it until something goes' bang to diagnose it, I
can't afford to do that and need the vehicle. I know it's a crappy description of the fault but that's the only way i can describe it. Any thoughts?

Stanleysteamer · Oct 22, 2022

59viper said:
Afternoon my 2003 Disco td5 has developed a kind of binding/slowing and knocking sound.
The knocking is constant but now when turning it's almost like it's in reverse and forward until I change a gear. Had drive shafts checked and fine, been told to drive it until something goes' bang to diagnose it, I
can't afford to do that and need the vehicle. I know it's a crappy description of the fault but that's the only way i can describe it. Any thoughts?

R U sure it isn't a seized CV joint?
Is it worse when turning in one direction over the other?
I'd put the front axle on axle stands and turn the wheels by hand to see if I could see, feel or hear something.
Brakes locking on?
Caliper loose?

59viper · Oct 22, 2022

Hi thanks for the reply. I would say worse on a right turn but the mechanic has given both cv joints a clean bill of health
The transfer box has been mentioned as a possible. Brakes fine also.

craigoodwood · Oct 22, 2022

Given your description I would say I too have the same irritating noise, I would describe mine as sounding like a snapped half shaft in the axle but only does it at crawling speed and worse in reverse....
I'm pretty sure my engine mounts are fubar though so at the min I'm working on the assumption that the noise is just reverberating through the chassis from the engine

59viper · Oct 23, 2022

Update. Mechanic says when on lift shutting engine off clutch in the rear wheels stop and the front wheels go backwards. what the heck.

steve24v · Oct 23, 2022

Is your transfer box fitted with cdl? Never experienced it myself but might be transmission windup?

Desert Rat · Oct 23, 2022

Does sound like a drive shaft, you Disco shouldn't have a third diff because they did away with it around 2000 and relied on traction control. A long shot but your traction control can make a noise and if you had a loose exciter ring that would bring the ABS on but you'd have it lit up on the dash.

steve24v · Oct 23, 2022

Some d2s are fitted with cdl, just didn't have the lever to activate it

Stanleysteamer · Oct 23, 2022

steve24v said:
Is your transfer box fitted with cdl? Never experienced it myself but might be transmission windup?

That might account for it!!

59viper · Oct 23, 2022

Thanks everyone, can i ask what CDL is so i ca investigate? thanks in advance.

steve24v · Oct 23, 2022

Center diff lock, it's in the transfer box.

Stanleysteamer · Oct 23, 2022

59viper said:
Thanks everyone, can i ask what CDL is so i ca investigate? thanks in advance.

Centre diff lock. It locks the diff in the transfer box. To take it off you need to move the Hi-lo lever to the right then move the vehicle back and forth till it pops out.
But as has been said before if you HAVE a cdl the light should come on once it is actuated. Only the later D2s had CDL that could be acutated from the cab and then only if the option was taklen up, early ones had the gubbins in the tranny box but no control, the ones after those didn't even have the gubbins! so the early ones could be actioned but you had to get under the vehicle and physically move the lever.
Is it possible someone has done that and then just left it in that position?

steve24v · Oct 23, 2022

The little gear lever that changes the hi/low gearing will move to the left and right if you have cdl

Stanleysteamer · Oct 23, 2022

steve24v said:
The little gear lever that changes the hi/low gearing will move to the left and right if you have cdl

Welllllll.......... if it isn't jammed, which they sooooo often are!!!
both my D1s had this even one that got used quite a bit.

steve24v · Oct 23, 2022

Stanleysteamer said:
+1^

Stanleysteamer said:
Welllllll.......... if it isn't jammed, which they sooooo often are!!!
both my D1s had this even one that got used quite a bit.

That's true

59viper · Oct 23, 2022

Thanks everyone. I suppose a transfer box change is the way to go? It's not really drivable as is and i need it at the moment. Bugger.

Stanleysteamer · Oct 23, 2022

59viper said:
Thanks everyone. I suppose a transfer box change is the way to go? It's not really drivable as is and i need it at the moment. Bugger.

Have a look at this lot first.
https://www.google.com/search?q=how...3i22i29i30.8072j0j15&sourceid=chrome&ie=UTF-8
No need to chuck the baby out with the bathwater!
If it IS the cdl has come on accidentally, it should be easy enough to disengage it from under the car.
IF it has a CDL.

Stanleysteamer · Oct 23, 2022

Desert Rat said:
Does sound like a drive shaft, you Disco shouldn't have a third diff because they did away with it around 2000 and relied on traction control. A long shot but your traction control can make a noise and if you had a loose exciter ring that would bring the ABS on but you'd have it lit up on the dash.

They din't completely do away with it then, but they did do away with the connection to it from the Hi-LO lever. It was still in the box. I think it was the facelift models that dropped the gubbins in the tranny box.

steve24v · Oct 23, 2022

Stanleysteamer said:
Have a look at this lot first.
https://www.google.com/search?q=how...3i22i29i30.8072j0j15&sourceid=chrome&ie=UTF-8
No need to chuck the baby out with the bathwater!
If it IS the cdl has come on accidentally, it should be easy enough to disengage it from under the car.
IF it has a CDL.

Agree with this, I would first check if it has cdl, previous owners could have fitted/bodged a transfer box in and not connected the warning light. My facelift d2 isn't fitted with cdl in the box.
Get underneath the vehicle and have a look on the transfer box. I will look and post a picture for you to see what your looking for

steve24v · Oct 23, 2022

Spigot thing where the red arrow is pointing at is the cdl, if yours doesn't have this then you don't have cdl.
Blue arrow is pointing to the warning light switch.
It's located near the front propshaft on top of box

Disco 2 drive binding knocking

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