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-   -   Versions of gearbox TCU for PF S8 (https://forum.a8parts.co.uk/showthread.php?t=5446)

Nollywood 2nd October 2012 06:39 PM

If you need a BG TCU, I've got one, that came off a working '98 car. This is the same car my S8 AHC motor came from.

Part number is: 4D0 927 156 BG.

Nollywood 2nd October 2012 06:42 PM

All UK-spec 32V S8's were AHC. In Europe, AHC was supplemented by AKH.

HPsauce 2nd October 2012 09:19 PM

Well I've done a bit more rummaging online and found indications that:
DTD is for an A8 QS with different ratios to the S8.
S8 has used DYM ECX ECY and FBG!

So combining all info that says mine "should" (Oct 98) be ECX. :Confused:

Which says BL or BM version TCU.

If I plug in VCDS will it give me the TCU version I have now? Will it say anything about the box?

Nollywood, what vintage was the S8 your engine & TCU (BG) came from?

HPsauce 2nd October 2012 09:37 PM

Quote:

Originally Posted by HPsauce (Post 47302)
Which says BL or BM version TCU.

Result. Found a saved VCDS output, it's a BL at present.
So now I know it's an ECX and what I'm looking for (BL, optionally BM). +++

I also note that the coding is 00101. Not sure what that means. :Confused:

Edit: Just had a good rummage here and on Audipages (and elsewhere) and it "looks" like the only other code worth trying is 00111 and some people have said that removes some of the "thumps" when slowing right down then speeding up - something I've had. So I'll try that sometime.

Is there anywhere a "definitive" guide to these TCU codes, there's lots of info but it's very scattered and incomplete?

Dezzy 3rd October 2012 11:21 AM

My box thumps and bangs at low speeds i thought it was just because it's got close to 200k on it and i drive it like a prick at times.

I need to be shown about this electrickery stuff and coding, anyone want to show me at ADI?

PsYcHe 3rd October 2012 11:43 AM

Is it the thump when you're idling at about 55-60? My PF did that, just a tiny touch of throttle when the revs dropped stopped the thump.. got used to left foot braking :)

Architex_mA8tey 3rd October 2012 12:43 PM

Quote:

Originally Posted by Dezzy (Post 47336)
My box thumps and bangs at low speeds i thought it was just because it's got close to 200k on it and i drive it like a prick at times.

I need to be shown about this electrickery stuff and coding, anyone want to show me at ADI?

I'll bring VCDS and I'm sure Mike will have his as well +++

IT 3rd October 2012 12:45 PM

Bear in mind thumps and bangs are very mechanical - I'd be surprised if much if anything shows up electrically, so VCDS might draw a blank in the same way the car has no clue how worn brakes pads are or the state of your pistons.....

Worth a nosey though +++

Architex_mA8tey 3rd October 2012 12:48 PM

wouldnt it be funny if VCDS said that Dezzy was driving it like a pr*ck lol :ROFL:

Dezzy 3rd October 2012 03:09 PM

Quote:

Originally Posted by HPsauce (Post 47303)
Result. Found a saved VCDS output, it's a BL at present.
So now I know it's an ECX and what I'm looking for (BL, optionally BM). +++

I also note that the coding is 00101. Not sure what that means. :Confused:

Edit: Just had a good rummage here and on Audipages (and elsewhere) and it "looks" like the only other code worth trying is 00111 and some people have said that removes some of the "thumps" when slowing right down then speeding up - something I've had. So I'll try that sometime.

Is there anywhere a "definitive" guide to these TCU codes, there's lots of info but it's very scattered and incomplete?

This is what i was refering too, but agree the box is dumb

Quote:

Originally Posted by PsYcHe (Post 47337)
Is it the thump when you're idling at about 55-60? My PF did that, just a tiny touch of throttle when the revs dropped stopped the thump.. got used to left foot braking :)

No, more when comming down from 3rd to 2nd and in 1st when ticking thottle let of and re-apply i get a thump. Just thought it was because it's had a good life.

Quote:

Originally Posted by Architex_mA8tey (Post 47346)
wouldnt it be funny if VCDS said that Dezzy was driving it like a pr*ck lol :ROFL:

I'll have mine VCDS too just unsure when it comes to playing with codes. But i will reset the errors that say i'm a prick just to save any :o moments


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