A8 4.0 Engine Vibration MUST READ!!!
02-08-2018, 07:12 PM
#181
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Fixed for 20 dollars
wrapped flex pipes with flashing and hose clamps. Vibration is now gone. It’s a temporary fix but the vibration comes from the extended length down pipes with inadequate support. Worked on lots of tractors and motors but this was an easy redneck fix. I drive an Audi S8 2013.
02-19-2018, 12:03 PM
#182
AudiWorld Junior Member
I got my car back from the Audi dealer today. It runs butter smooth - all prior vibrations are gone!
I took the TSB #27 15 25 2036392/4 March 20, 2015 in with me for the appointment and asked them to call Audi USA. They got Audi USA to cover 75% of the cost. I was out the door with new downpipes, clamps, and gaskets for $326. I took a risk with the out of warranty and non-CPO purchase, but so far I'm not complaining...
If you're going to take it in I recommend having the TSB printed and in-hand.
I took the TSB #27 15 25 2036392/4 March 20, 2015 in with me for the appointment and asked them to call Audi USA. They got Audi USA to cover 75% of the cost. I was out the door with new downpipes, clamps, and gaskets for $326. I took a risk with the out of warranty and non-CPO purchase, but so far I'm not complaining...
If you're going to take it in I recommend having the TSB printed and in-hand.
02-26-2018, 03:46 AM
#183
AudiWorld Member
To JohnnyRocker 3.....there ARE downpipes from APR for the A8L. These downpipes fit any Audi with a 4.0, S6, S7, RS7, A8, S8 etc. On the A8L you just have to buy a separate part(s) which is just a pair of straight pipes which extends the end of downpipe to compensate for added L length. But what APR doesnt have is a Stage 2 software for the A8, the stage two software upgrade is S8 only.
02-26-2018, 06:56 AM
#184
Yeah the downpipes will fit any 4.0T with extensions for the LWB. The issue is no stage 2 map. However I did speak with a rep at APR who said they have a Stage 1 tune and a stage 1 tune with test pipe so you won’t throw codes. I wish they’d just make a stage 2 map for the A8. There can’t be that much difference between the platform and you’ve already written a test pipe file so half the work is already done.
04-12-2018, 09:26 AM
#186
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Meant to ask for few months now... Any owners with 3.0 engine experience the same issue? I have only 36k miles on 2014 A8 and it does exactly the same thing but around 1300 and 2500RPM.
Looks like TSB only for 4.0 motor??
Thanks
Looks like TSB only for 4.0 motor??
Thanks
Last edited by snowsnob; 04-12-2018 at 06:00 PM.
04-13-2018, 07:30 AM
#187
AudiWorld Junior Member
I couldn't upload the pdf I used but here's a link to 27 17 29 2036392/6. It is for the 4.0.
http://www.revbase.com/BBBMotor/TSb/...dPdf?id=199112
http://www.revbase.com/BBBMotor/TSb/...dPdf?id=199112
Last edited by JohnnyRocker3; 04-13-2018 at 07:41 AM. Reason: Uploaded file wasn't attached
04-14-2018, 05:59 AM
#188
I haven’t seen any posts on the 3.0T and engine vibration. I also haven’t experienced it. Did you search the 3.0T engine thread?
04-14-2018, 06:52 PM
#189
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I would imagine its not an engine problem as so as location of exhaust mounts, right? Wonder if it's very similar exhaust. Car had complete service before I got it and this is the only nuance so I didn't take it anywhere.
09-17-2019, 06:09 AM
#190
FYI, saw this video on adding a brace to stop the vibration.
https://www.google.com/url?sa=t&rct=...tai4dLVxGA4mjb
I think a cleaner bracket could be made but it seems like an easy fix. I recall other cars having a hanger before the flex joints so don't know why Audi went without support. It wouldn't take much, just something to steady the pipe.
https://www.google.com/url?sa=t&rct=...tai4dLVxGA4mjb
I think a cleaner bracket could be made but it seems like an easy fix. I recall other cars having a hanger before the flex joints so don't know why Audi went without support. It wouldn't take much, just something to steady the pipe.
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DallasDave (09-17-2019)