Range Rover S/C Transmission Thump

[griffgrog]

Sometimes when I'm on the overrun and then accelerate, I get a thump from the transmission. This is quite annoying, but is it normal? It's been back to the dealer who couldn't find a problem, but I'm sure there is one. Has anyone else experience this?

[P100]

Hi, Its certainly not normal.....
I would suggest it could be either the transfer box chain starting to slip or the front prop splines starting to strip. (there is a no charge mod by dealers on request for this ).

Have a look at the engine/trans mounts too..

HTH

Roy

[BLUETHUNDER]

The problem would be in the transfer box. More likely their is play in the output shaft.

[griffgrog]

It really feels as if it's going from Neutral into gear, rather than something slipping. It feels more like a control system than a mechanical breakdown. Does that make sense? I've had a car with a slipping transfer box chaing (XR4x4) and it' felt very mechanical. This is like you've had it in N then slipped in into D and it engages ubruptly. it's only done 40K so it shouldn't bear wear and tear.

[BLUETHUNDER]

griffgrog said:

It really feels as if it's going from Neutral into gear, rather than something slipping. It feels more like a control system than a mechanical breakdown. Does that make sense? I've had a car with a slipping transfer box chaing (XR4x4) and it' felt very mechanical. This is like you've had it in N then slipped in into D and it engages ubruptly. it's only done 40K so it shouldn't bear wear and tear.

It still sounds like the output shaft.You would be surprised regarding wear and tear. A mate just had a new transfer box fitted to his X-type. It had ohnly done 28,000 easy miles.

[DonArm]

Had a problem with mine, which might be your problem. Mine would drop in and out of drive when on the overun, the D would flash on and off on the display. Turned out that the gear lever was stiff and the linkage needed lubricating. You could wobble the gear lever while selected in drive and make the D caption flash.

[MOD500]

I get issues like this on mine, e.g when approaching a roundabout slowing down waiting for a gap it thumps when you get back on the throttle, sometimes is quite a strong thump!

Mine also thumps into gear during low speed driving; feels like the shifting up and down between 1st and 2nd is not right sometimes, is quite annoying. Feels like the gearbox is not matching the gear change point to the road speed, hence causing the thump.

I recently had a service (30k miles) and reported these issues. Guy Salmon said a 'gearbox relearn' would cure the problem after an hour hooked up to the computer. After charging me £85 for the privilege the issue is a little better but fair from right.

Interestingly my Father has an '06 4.4 Vogue and his does not display any issues like mine despite it having 40k miles on.

Edited by MOD500 on Monday 12th April 20:57

[griffgrog]

That's exactly what I get. I spoke to a friend who has just bought one and he gets the same problem. Perhaps 'they all do that sir'?

[budrover]

is it a TD6 diesel?

Gearboxes are weak on these models--especially if engine chipped.

[kVA]

budrover said:

is it a TD6 diesel?.

Clue's in the S/C bit in the thread title...

[Rocksteadyeddie]

We had exactly this problem with two X5s that we had. I don't know if it is the same 'box fitted to the RR. Someone will be long in a moment who does know.

Anyway, on the first one the whole transmission failed and was replaced under warranty. The second one did it until the day we got shot - which was a good 12 months later.