S65 722.6 gearbox issue?

[V6Matty]

Brilliant, absolutely what I was after, thanks as always Alex

 

[hoppo]

I'm happy to meet you anywhere I wouldn't expect you to travel that far. Just let me know

Oddly the 3 to4 change is much better but not right worse when on no load at say 35 40 and you just touch the peddle to speed up.

The dip stick I have says it's full. Having changed all the bits I had to put back just short of 5L and that's about what came out.

When it drops gear it normal is on a 3to4 or 4to3 shift. But I don't get any slipping.

The other thing it's started doing is when slowing to a stop it feels like some one is dipping the clutch and then letting it out again as it loses engine braking then comes back.

 

[alexanderfoti]

I'm happy to meet you anywhere I wouldn't expect you to travel that far. Just let me know

Oddly the 3 to4 change is much better but not right worse when on no load at say 35 40 and you just touch the peddle to speed up.

The dip stick I have says it's full. Having changed all the bits I had to put back just short of 5L and that's about what came out.

When it drops gear it normal is on a 3to4 or 4to3 shift. But I don't get any slipping.

The other thing it's started doing is when slowing to a stop it feels like some one is dipping the clutch and then letting it out again as it loses engine braking then comes back.

Does the dipstick you have, have a plastic tip?

Sounds like low fluid.... Although 5l with a conductor plate and filter doesn't sound far off

If you accelerate whilst its dropped into neutral, does it snatch back into gear?

 

[hoppo]

No it just revs then either you have to stop or it just goes back into either 4 or 3.

Yes the dip stick has a plastic end bit it is hard to get a very accurate reading.

 

[bembo449]

my range rover box takes 6.5 ltrs , its only a 5 speed , is 5 ltrs really enough Alex ?

 

[alexanderfoti]

my range rover box takes 6.5 ltrs , its only a 5 speed , is 5 ltrs really enough Alex ?

Well WIS does say 6.5L which rings a bell, so 5 maybe be a fair bit short! The TC holds roughly 1.5/2L so I would say its probably just low on oil!

I feel like the smaller NAG boxes have a lower capacity.....

Hoppo - If you push hard enough you can go past the dentent and get a false high reading. Just insert it to the natural limit.

 

[bembo449]

low fluid would go along way to explaining the issue the OP has Alex , what if he added say , another 3/4 ltr then tried it see if there is any difference ?

 

[hoppo]

I'm happy to chuck some more in and see but I can't understand how it could be caused by low fluid. As if failed suddenly and then after replacing parts is exactly the same.

I'll band some more in tomorrow and see can always suck it out

 

[bembo449]

because auto boxes work on pressure transfer so if there isn't enough fluid to put pressure on then it wont change gear correctly

 

[hoppo]

I understand that much but if I had no leaks and it was fine untill a sudden gear drop and then has been the same since. Unless it lost fluid I can't see it being the problem.

But I'm happy to try.

 

[alexanderfoti]

I understand that much but if I had no leaks and it was fine untill a sudden gear drop and then has been the same since. Unless it lost fluid I can't see it being the problem.

But I'm happy to try.

I do see what you mean, as you had the same problem before and after a fluid change, with no apparent leak. The oil has to go somewhere...

The only place it can leak, and you not see it, is into the engine coolant, or into the wiring, which you have checked.

 

[hoppo]

I checked the car this morning. Stone cold. Running in park and it was a touch low. I've topped it up and it's still the same

 

[alexanderfoti]

It does seem like a mechanical fault if the level is right.

 

[Botus]

auto box always check when hot

 

[LostKiwi]

I really think you need to get it on Star and look at the live data for fill times etc.

 

[V6Matty]

Sorry Hoppo, wife needs a few things doing on Saturday (picking up a new pram and car set) so could we o this on Sunday morning instead?
Where do you want to meet as I don't know Leicester that well so may be better if you suggest a good place

 

[hoppo]

Sorry Hoppo, wife needs a few things doing on Saturday (picking up a new pram and car set) so could we o this on Sunday morning instead?
Where do you want to meet as I don't know Leicester that well so may be better if you suggest a good place

I have the kids Sunday morning as the Mrs is out I could do Sunday afternoon or mostly any evening. Hobbyhorse island/pub is fine by me if you want to travel that far? I'm more than happy to come to you.

 

[Botus]

on another post there's a link to youtube….

came across this one.... check the seals out

 

[V6Matty]

I have the kids Sunday morning as the Mrs is out I could do Sunday afternoon or mostly any evening. Hobbyhorse island/pub is fine by me if you want to travel that far? I'm more than happy to come to you.

Np, Sunday afternoon would work, say 2:30 ish at hobby horse? Either that or your welcome to pop over to my place tomorrow evening?

 

[hoppo]

2.30 at the hobby horse would be perfect..