evopilot

has anybody ever experienced this:

When not used the car in a number of hours i get to the car ignition on and press the start button and all you can here is a small click of the relay under the steering column. Ive you hold down on the start button you will hear a second click of the relay too but the car wont turn over.

No matter how many times you press the button or how long you press it nothing happens apart from that relay clicking.

If you go off for 5-6 minutes and come back to the car and try start it then it will 99% of the time turn over and start as normal.

Before i go buying a new starter motor or battery i wanted to put it out there in-case somebody else came across this issue, my gut is telling me its one of them

this issue ended up to be a failed clutch slave cylinder leaking inside the gearbox, gearbox off, clean like hell and clean some more and replace the part. sadly it would be ver hard to inspect this issue with the gearbox on 😕

do you get this error on the dashboard:

"Engine start system fault. Please contact workshop"

bump

how did you get on with these did you fit them?

just wondering if you ever went with this tune? always curious when companies make these BHP increase claims without seeing the car etc

ill send you a PM

open to offers

have you got a link on eBay?

defiantly a Nox sensor issue, that car cant talk to the sensor for whatever reason

The easy one is check the sensor is not dead after that you looking at checking the wiring unfortunately which is a right pain

wouldn't say that's the master cylinder at all going by being able to start on a rolling start

two questions?

1. Have you any fault codes with VCDS or ODIS (or any reputable diagnostics scanner)

2. Next time you go to first start the car in the morning can you attach a jumper pack or jump leads and try a cold start to see if the problem remains?

I ask the above as question 1 would tell you if you had a master cylinder sensor fault or a starter motor circuit fault and question 2 is more of a hunch.... Ive seen on 2 Audi's now when the battery is getting tired everything looks OK but theirs not enough kick in the battery to start her when shes cold especially with the cold snap of December/January weather

Thanks Shimi, replied to you there

On 11/2/2022 at 8:57 AM, Magnet said:

Hello Andrew,

Incase it helps, but it possibly won’t. 
If you’ve looked on EBay, I wouldn’t discount any mud flaps from China - just because China! 
I ordered a set for our non-Audi, and as I said in an earlier post - the fit and quality was equal to what would have been my expectations if I’d bought them from a main dealer at 3 times the price. 
Might be worth having a look on Alliexpress website. Not sure what they do for Audi, but…

Kind regards,

Gareth. 

i actually ordered some Chinese ones today, now i play the waiting game for delviery

is the E10 in the UK a bio ethanol mix of 10 or what way do you guys do it over there? i remember we used to have E5 petrol here around 15 years ago and it was great for Jap cars as it brought up the octane rating but it was bad for the euro cars even back then especially BMW's

On 10/25/2022 at 12:38 PM, Steve Q said:

I'd try eBay if you haven't already 

Yeah ive seen a few for the standard A6 on there but nothing for the wider side skirts on the ultra 😕 person that had the car before me had regular mudflaps stuck on and they looked very poor id rather have the proper stuff on it

where abouts in Ireland are you buddy? if your near Carlow i can plug it into ODIS & VCDS for you. See whats going on. Last time i seen that it was an ignitor fault.

Plate is currently on the car, happy to put the car back on the original plate to allow the sale of this private plate

Open to offers

On 10/31/2022 at 9:30 PM, Stevey Y said:

Hi it won't ever sound like the RS6 but will give a deeper note and better performance as its all about clearing exhaust gas quicker via a more direct route prime example being the exhausts on big engined trucks in America they go straight up wth no baffle boxes.

Steve.

unless he went for one of them digital speaker exhausts 😕 would sound like a RS6 then with little change out of 2/3k for the privilege

On 10/29/2022 at 9:31 AM, gsmdo said:

OK - don't bite my head off - but from your description, this sounds suspiciously like a fuel blockage. Sudden loss of power; stops pulling; blockage clears; revs increase... 🤔

thanks buddy i might run her with VCDS and see if the fuel system is showing anything odd, at this stage its worth a try

Here is a video i took earlier in 4th gear.....

Gets to 2400rpm and jumps to 3100rpm

Falls back to 2600rpm and we go on our way again as if nothing happened

During the jump you can see the selected gear notification disappears during the jump and comes back when the revs have come back down.....

This is what i mean about it being a strange jump as in my opinion a clutch on the way out would slip at 2400rpm and keep slipping not stop slipping

Right, this is proving to be a right pain.....

Clutch, Flywheel, and slave cylinder were all swapped for new parts and ITS STILL doing this weird issue

To recap now it's fine when on normal cruise and partial throttle there is no issue at all its smooth as they day it rolled out of the dealership, the problem kicks in under heavy acceleration say when over taking the power comes in and you can feel the turbo pull the car then it looses power, stops pulling, the revs jump up 500-1000rpm and the car comes back in, naturally the turbo is no longer pulling as its lost pressure but if i keep my foot accelerating you can feel the turbo coming back in again 

In all the years Ive dealt with clutch slipping it would always loose grip at a certain RPM and keep spinning after that RPM that being said i still replaced the clutch and flywheel on this car last week and changed the slave cylinder whilst it was all stripped out for the sake for €150 it seemed like a good move.

So now im nearly 2k deep in parts cost and the problem remains after the new clutch & flywheel.

I am at a lose trying to think whats mechanical, whats controlled by sensors, cold it be a faulty LSD im running out of ideas as im used to working on JAP cars

3 hours ago, Stevey Y said:

Hi the gearbox oil change is every 50k or two years and I use Fuchs Titan which is whats supplied to Audi but cheaper because its in Fuchs own bottle, my advice would be to get the filler plug out before the drain plug as its a real Barsteward to get out the first time.

Steve.

i didnt know the OE stuff was rebranded Fuchs stuff, handy to know. Its like the Halfords stuff is actually Comma oils in a different bottle

Anybody know where i can source a6 c7 ultra edition mud-flaps? ive only been able to source standard a6 c7 mud-flaps but because the side skirts are slightly different they seem to be hard to get for the ultra 😕

For reference in case anybody stumbles on this thread the original part number is:

G052549A2 and the QJY manual gearbox takes 2.5ltrs

Castrol also list 75w 90 but i think ill stick to the OE stuff above from Audi