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My Chiffon Ivory JB74 SZ5 - blog/mods/build thread

Andy2640
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21 Jun 2020 20:26 #223838 by Andy2640

Replied by Andy2640 on topic My JB74 SZ5 - blog/mods/build thread

Hi there,

It makes me wonder if the jumping outta low range could be to do with your driving course. Do you experience any wind-up in the drive train making sharp corners. If it was slippy then the wheels would slip, allowing for equilibrium, maybe that is the reason??

Just thinking aloud.

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Scimike
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21 Jun 2020 21:34 #223841 by Scimike

Replied by Scimike on topic My JB74 SZ5 - blog/mods/build thread

Hi Andy,
It should stay in gear even if you are driving on tarmac with no wheel slip (don't do this). Not aware they have fitted a torque transducer to measure wind up and get the ECU to drop it out, but you never know.
Accidentally drove my Land Rover in 4x4 on tarmac (no lights to tell you), if felt odd, then it jumped in the air with an explosive bang as it unwound, luckily nothing broke.

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Andy2640
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21 Jun 2020 21:50 #223843 by Andy2640

Replied by Andy2640 on topic My JB74 SZ5 - blog/mods/build thread

Hya scimike,

Ive done that too. Reversed amd turned in 4h, felt like i ran over a dog and then banged as it unwound. Only dod that once!!

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mlines
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22 Jun 2020 05:11 #223846 by mlines

Replied by mlines on topic Re:My JB74 SZ5 - blog/mods/build thread

Scimike wrote: Hi Andy,
It should stay in gear even if you are driving on tarmac with no wheel slip (don't do this). Not aware they have fitted a torque transducer to measure wind up and get the ECU to drop it out, but you never know.
Accidentally drove my Land Rover in 4x4 on tarmac (no lights to tell you), if felt odd, then it jumped in the air with an explosive bang as it unwound, luckily nothing broke.

It's got nothing sophisticated. Simple lever operation

It can only be the traditional items such as broken mounts or rubbers, selector fault (broken or worn selector, missing ball bearing etc)

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300bhpton
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22 Jun 2020 11:47 #223862 by 300bhpton

Replied by 300bhpton on topic Re:My JB74 SZ5 - blog/mods/build thread

Thanks for the thoughts. I'm pretty sure it jumps out when the ground is wet, so plenty of scope for the wheels to slip.

My gut says it is something simple like the linkage. But I'd rather get it looked at under warranty. It was one of the main reasons for buying new, to save me having to crawl under to fix them.

My 2019 Chiffon Ivory JB74 SZ5 - blog/mods/build thread -let the adventure begin

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mlines
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22 Jun 2020 12:20 #223863 by mlines

Replied by mlines on topic Re:My JB74 SZ5 - blog/mods/build thread

So if the wheels are slipping on the "green ice" then the Allgrip system will burst into life and will rapidly modulate the brakes to act as an e-diif. At this point snatching vibration will be fed into the driveshafts, I wonder if this is causing it to jump out?

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My Chiffon Ivory JB74 SZ5 - blog/mods/build thread

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