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Auto boxes

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landyman Ash:
Cheeky sod!!!  :shock:

It was just a loose pipe....  :D

Thought it might of gone but thankfully its just a pipe.

Working on your disco in London.  People were looking at me as though I was mad  :shock:  :shock:  :shock:  :shock:

landyman Ash:
OH!!! You mean the ZF in the field?!?  

Sorry, I thought you meant my disco one that blew up!!!

Its my ZF in the field.  Keeping it as a spare but I think there is another in the barn!!  Why, wnat one???  :D

robbie:
Now heres a thing with my Disco auto box, it is supposed to be a 4 speed, or at least it goes 1-2-3-D so I assume it is 4 speed, yet at around 53pmh, there is definate engine speed change downwards suggesting another gear/overdrive  :?

Is this normal??

If you carefully listen to the shift change, there is definately another 'something' there at 53mph  :shock:

muddyweb:
That is the torque converter locking up.   It's a feature of the ZF box to help improve fuel economy by reducing the losses caused in the viscous coupling of the torque converter.

The lock up speed is just over 40 mph on the 3.5L boxes, and just over 50 mph on the 3.9 box

robbie:
Aahh, yeeh that makes sense then and I guess I have the better box without knowing it :)

AND....

it seems it works then, what a bonus  :lol:

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