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Hi all,
Just thought I'd update you all on this one. In the end I replaced the box with a known good box, and gave the new one a full service, reset adaptations and all is good in the world.
I have since started to strip down the old box and I can confirm that RRPhil was correct and shaft that holds 4th and 5th had indeed broken. On first inspection it looked fine but it has actually started to come away and once fully removed we could see where it had actually gone. Pics to follow at a later date.
Just wanted to say thanks Phil, whilst it wasn't the "it's just this sensor" reply that I really wanted, it was a successful diagnosis. Furthermore I was told by an expert in such boxes that they have seen errors caused by the Gearbox ECU sending a random signal to put it into reverse, which is what can cause the snap. I don't know how common this is but they were saying they replace the ECU whenever they come across these sorts of failures.
For what it's worth I am planning to rebuild the old box over Xmas so will probably start a build up thread for it.
Thanks again guys!
Last edited by PixelBarnX5; 11-23-2022 at 10:53 AM.
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11-23-2022, 08:31 AM
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