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Need Help...hunting Rpm While Cruising


xpl0sive

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  • Member
  • Member For: 13y 2m 10d
  • Gender: Male
  • Location: Perth

My 2 bobs worth.. try to get a new trans from ford even if you have to pay some of it and then do an a/market kit for the cooler. It is ridiculous and all that given the nature of the fault but water in these things looks to be a 'fatal.' You could spend a grand on it and still have an issue later on.

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  • Member For: 16y 1m 2d
  • Gender: Male
  • Location: Melbourne

I will give ford a call next week and see what they say, but honestly don't like my chances given the age of the car. If they just tell me to take it to a ford dealer to diagnose and then they'll decide I won't bother, as it'll cost me to tow it there and and pay ford dealer to diagnose it, then there's no guarantees they'll replace it, and if they dont I'll have to tow it back then tow to my tuner. The box was still changing gears fine though so im hoping I've got to it early enough and it can be fixed.

Regarding external trans cooler, I'm not sure if this is possible as I know ZF's are very sensitive in regards to temp changes and can act funny which will be an issue if bypassing the heat exchanger, and a ZF tune does not fix this. If any members here have been running an external trans cooler for a considerable amount of time with no ill effects, please let me know as I'd definitely like to get this done once I fix this mess to avoid having to go through this again.

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  • Three pedals are better then two..
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  • Member For: 17y 8m 28d
  • Gender: Male
  • Location: Melbourne

It's possible mate and they can work quite well, the ZF tune should be able to allow better control of the cooling parameters the gearbox can work in I.e to make it not so sensitive. Not enough people have done it yet to create a set path, it's still a learning curve.

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  • Member For: 18y 8m 27d
  • Gender: Male
  • Location: @ my laptop

ZF has different shift pressures based on temp, which is possibly one reason the boxes have not responded correctly with external trans coolers, but these shift pressures can be altered with the tune, not sure if there were any other accesible parameters relating to temp.

You have to remember that the heat exchanger is not only there to help keep the trans cool but alos to bring it up to temp quicker.

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  • Three pedals are better then two..
  • Donating Members
  • Member For: 17y 8m 28d
  • Gender: Male
  • Location: Melbourne

Size isn't the problem as it works fine it's the design that's the problem.

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