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-   -   Not looking good (https://forum.a8parts.co.uk/showthread.php?t=15184)

ainarssems 24th August 2019 03:02 PM

Not looking good
 
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http://forum.a8parts.co.uk/attachmen...1&d=1566655336

ainarssems 24th August 2019 03:03 PM

1 Attachment(s)
http://forum.a8parts.co.uk/attachmen...1&d=1566655431

HPsauce 24th August 2019 03:05 PM

Unless it's "just" the F125 switch.....

MikkiJayne 24th August 2019 03:23 PM

Argh :( That's usually something slipping, and that is usually the front broken off the front clutch drum.

Assuming you don't fancy a full rebuild, replacing the clutch drum is DIY'able if you're able to get the gearbox out. Its available new from ZF dealers, or you could use a donor gearbox, although that's a risk that it also has a cracked drum. Prestige have a dead one in at the moment I think, although I don't recall what the fault was.

ainarssems 24th August 2019 04:13 PM

Problem appears to be with 1st gear. Moving off it makes a jolt and switches to 5th. If I manage to manually switch to 2nd before fault occurs it works fine until goes in 1st again.

ainarssems 24th August 2019 05:22 PM

Any idea what the solenoid current should be? Most are 0.144A but one is 0.742A?

Also strange that fault code says Gear 3 but problem seem to be with 1st.

ainarssems 24th August 2019 05:41 PM

Quote:

Originally Posted by MikkiJayne (Post 152376)
Argh :( That's usually something slipping, and that is usually the front broken off the front clutch drum.

Assuming you don't fancy a full rebuild, replacing the clutch drum is DIY'able if you're able to get the gearbox out. Its available new from ZF dealers, or you could use a donor gearbox, although that's a risk that it also has a cracked drum. Prestige have a dead one in at the moment I think, although I don't recall what the fault was.

Unfortunately no time and no facilities to DIY it if the box need to come off, and not worth paying someone else to do it as car when working was worth £1k at most. I did replace clutch and flywheel on A6 on the drive but car was just high enough to disconnect the box not to actually remove it from under car.

Unless it's a solenoid or something else I can DIY from under the car without removing the box I am afraid it will be the end of S8.

ainarssems 24th August 2019 06:19 PM

2 Attachment(s)
This is what Elsa say




http://forum.a8parts.co.uk/attachmen...1&d=1566667251

http://forum.a8parts.co.uk/attachmen...1&d=1566667251

ainarssems 24th August 2019 06:23 PM

As soon as I move off, jolt and fault code registered for gear 3 when it's only been in 1st, if I manage to get to 2nd all other gears work fine including 3rd until it selects 1st again. :Confused::Confused::Confused:

Dezzy 26th August 2019 08:41 PM

Ffs ainars, must be save able on a shoe string.
Just out of interest what happens when the 4 speed is coupled to the S?


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