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ATF transmission lines replaced now it behaves different

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6 replies to this topic

#1
dcproven

dcproven

    David (NCLR082)

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So, I replaced all the lines, transmission to radiators.

It all went smooth enough (I noticed one of the lines up front slightly bent)

 

So now the transmission behaves different, I checked the level a million times, cold, after all gears back to N, etc. done this before many times before, so I am very confident it is on the right level (and it was the same before).

 

So anyway, the box now feels like a new box, it shifts later, but engages harder (not bumpy, just you can feel it shifting more), it shifts later too (before it would shift in the 2-2.5K RPM, now it seems to go 2.5-3K RPM). The torque lock seems to engage as always in the 50+ MPH and it goes very smooth and strong on freeway, going up or down small grades. It seems to keep the whole thing cooler too (which I could understand since the old lines were, well, old and leaky).

 

The new lines don't leak (AFAIK) and there is nothing weird, again, AFAIK, but just replacing the lines and adding whatever ATF it lost (which came out clean enough and it is the left over from my last ATF filter & fluid change) shouldn't make a big difference.

 

Or should it? Maybe the old line were not able to keep the right pressure or the new ones are bad? (This is a kit from Atlantic British BTW)

 

Your opinion appreciated.



#2
dcproven

dcproven

    David (NCLR082)

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Answering myself, kickdown cable got bent in a funny way when fitting the #@^%$@ higher hose in the box, that should be it.



#3
DHappel

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That would do it.  I was struggling to think how an oil cooler change would cause your issue.  Glad it turned out to be simple. 


Don
'07 LR3 HSE/HD - slightly non-stock

'96 D1 - even more non-stock


#4
dcproven

dcproven

    David (NCLR082)

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Well, haven't test driven it yet, but my money is on that.... we'll see soon enough.



#5
aebrownleeiv

aebrownleeiv

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How much new fluid did you end up putting in? 

I've seen other transmissions perk up surprisingly well from even a 10% fluid replacement when the current stuff is way passed expiration. 



#6
dcproven

dcproven

    David (NCLR082)

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Fluid was new(ish) only the trip to Baja and Shaver lake on it about 2000 miles on it.

But the problem was indeed the kickdown cable, turns out the sleeve popped out of the box when I was fighting my way with the hoses, making the box think that any gas on the pedal was a kickdown request :) anyhoo, now it's all smooth as expected.

 

Love when problems have a simple solution.

 

Thanks everyone.



#7
DHappel

DHappel

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Win!


Don
'07 LR3 HSE/HD - slightly non-stock

'96 D1 - even more non-stock





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