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#31
20th January 2014, 09:10 AM
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Hi There,
I opened the box up and couldn't see anything particularly obvious. It's all surface mounted and riveted into the box so you can only get to one side. I have a 'new' one comming from A8Parts with the right code. BL It should be a plug and drive part  Will see what happens when it arrives Lee 
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#33
21st January 2014, 11:00 AM
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Hope its a good result. I have learnt a lot from this thread though I hope I dont have to use it.
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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#34
21st January 2014, 11:01 AM
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Fingers crossed for you fella, I do love a happy ending
Take the positives from all of the unnecessary work, in future you'll tackle gearbox problems with no fear at all 
__________________
Audi D3 S8 - 2007 - V10. B&O, Phantom Black, black and silver interior, and still completely standard with everything working as it should  SOLD 2023  Audi TT - 2015 - Ultra
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#35
22nd January 2014, 12:32 PM
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Quote:
 
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs Last edited by Architex_mA8tey; 22nd January 2014 at 02:21 PM.
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#36
22nd January 2014, 01:54 PM
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Hi There,
Well I went home with the novelty of working gears last night. I've noticed a bit of pulsing with things, but that could be down to having low oil as doing the filling procedure on axel stands, even at a fairly low level will result in it being out. Will be getting it topped and checked tomorrow on a ramp. In doing this I've learnt a lot and cleared some debris from the gearbox and changed the oil which are all good things. I think if I was in a similar situation, i'd trace the box out first, however I didn't know that info until later. I think If I had given it to Audi they would have charged a couple of hundered diagnostics and then a lot for the TCU, so i've come out pretty reasonable! Thanks, Lee
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#37
27th January 2014, 12:28 PM
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Hi there,
AND.......More bad news. Drove down to London on Saturday night and almost got to mys destination, slight over rev and [PRND432] comes up. Limp mode and 5th gear only. Parked up at destination. Came back and it had cleared. Pull away and limp mode after a brief bit of driving. Got home in 5th *SIGH* Vagcom just gives me a 17114 - Incorrect Gear Ratio P0730. I did also notice an engine speed sensor error intermitant, but cleared it. Having a search and read i found this http://forums.audiworld.com/showthread.php?t=1755643 Now doing a quick bit of testing with vagcom. state Eng Spd Input Spd Output Spd Gear Idle 750 0 0 1M 1st brake 800 768 0 1M Scoping while trying reverse and forwards, gets *VERY* little in the output speed regardless of input. You get 25-100rpm maybe. And when the input speed reaches 1500-2000 it hits limp mode. I'm thinking that output sensor is out of whack as if you were getting slippage i'd expect to get more spiky readings of the output and a larger reading??? So.....Where is the output sensor on the S8 as it isn't inside the gearbox as per the BMW/LANDY Lee
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#38
27th January 2014, 07:34 PM
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The transmission output speed is taken from a target wheel on the Torsen unit carrier by an inductive sensor.
  There’s also an output speed sensor on the LH front driveshaft but I assume that’s for the speedo.   Unlike the 5HP24, the wiring for the output speed sensor of the 5HP24A is separate to the main transmission wiring loom i.e. it doesn’t pass through the 16-pin connector. The input (turbine) speed sensor sits on top of the valve block assembly, of course.  Phil
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#39
28th January 2014, 11:56 AM
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Phil,
Much useful information yet again However having an extensive play with VCDS last night in the carpark i'm less convinced it is a speed sensor, though quite what is happening I am not quite sure! After clearing errors and starting the car, limp mode is not engaged and everything looks fine. You can get reverse nice and smooth, monitoring the sensors and input is high (800+) output is low (0/25rpm). Changing to 1st with the brake and it's fine. Releasing the brake, no problems, but you don't really creep forwards like normal. Input is still high and out low. Adding gas very slowly and you get to 1200-1500 with still almost nothing on the output and then it hits limp mode. It's like it never even trys to engage 1st or actually move out of 5th! Driving home in 5th last night I carried on monitoring and the input and output speed were both fine, which then says to me that it is not the speed sensor (in fact the output was often higher than input, which I guess is gearing). I can check the solinoids and the power to them with the software if anyone has any ideas ??? Lee
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Linear Mode
