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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    Removing only the butterfly valve tricks the computer that the Maf is running fine leaving the EGR to function. but leaving it for a few days won’t cause any major issues and the Dpf will know it needs to regen once it’s all connected again
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    They are all connected in a computer sense. Removing the swirl connector increases the MAF reading which in turn will create an EGR error forcing it to stay shut 100% of the time
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    Dpf needs MAF readings and EGR readings to be correct to initiate a regen. With the swirl connector removed it will cause higher Maf reading because the EGR will be shut off.
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    The only consequence this will have will be the EGR being shut off. The car will run great but you may have issues with DPF regeneration because the engine senses a fault.
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    With the swirl flap valve disconnected you will certainly see a higher Maf value because if you disconnect with the engine running you’ll here the EGR shut. To be honest I didn’t notice much difference mapping out the EGR less power if anything. But that swirl flap can cause all types of clatter.
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    Just saw your message. Absolutely you’ve solved the problem
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    That’s fine with Obd11 run a scan and you’ll probably get errors for the TPS and swirl flap Valve. clear the faults and switch Car off and On again and check faults again. If nothing appears start car and check engine. Only thing I can think of is you haven’t connected TPS connector properly...
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    Eliminate diesel clatter CDUC, CDUD 3.0tdi

    Sounds like your lacking air. have you made sure all connectors have been connected back Correctly ?. Anything blocking intake ?. Rag or something ? do you have VCDS ?.
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    DL501 S-Tronic Help

    The strange thing is that when I run engagement point adaptation with VCDS the gearbox then runs as smooth as silk and changes gear when it’s supposed to. But after a few days when it has runs through the different calibration steps it goes back to being a bag of nails.
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    DL501 S-Tronic Help

    Thanks John were you getting intermittent symptoms?. Some days smooth as silk and others rough as old nails ?.
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    DL501 S-Tronic Help

    Many thanks for the reply yeah, oil and filters changed every 35,000kms. I even got a software update from Audi but that didn’t help. They say theirs nothing wrong but I can feel the difference like night and day when it runs smooth and rough. I can almost feel jolts between gear changes when...
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    Lowering experiences????

    Do you have air suspension?. Just do the 402 mod
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    Looking for A7 Black Edition...in a few months time

    Shame I’ve got a black edition for sale but I live in spain.
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    Start/stop system fault

    Ok So I have the same problem. I don’t think it’s your battery. I believe it will possible be the start button. if you press the start button down hard when you start the engine it shouldn’t show an error.
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    DL501 S-Tronic Help

    Hi All I have a 2012 with 7 speed s tronic. For months I thought I was having engine issues because the car would feel more lumpy and have less power sometimes but after checking everything I think it may be the transmission. no faults what so ever and have also tried calibrating clutches...
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    Throttle pedal reading

    Hi I was wondering if you could have a look at the graph I logged for the throttle pedal position during Idle. Is it normal to keep fluctuating like it’s doing in the graph ?. checked with VCDS and no faults found but I have been noticing some erratic gear shifting lately with the s tronic...
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    3.0 tdi CDUC ( AC possible problem )

    Many thanks for the reply. I can’t see any wobbles and the belt seems firmly in one place and not jumping around at all. But your right I need to take the belt off and test the car for rattles. It’s definitely only happening when the AC is On. If I leave the engine running with the Ac off and...
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    3.0 tdi CDUC ( AC possible problem )

    It’s really strange. at first I thought it was an injector problem. It sounds like a proper diésel clatter noise when accelerating and I noticed it was very intermittent. If I switched off the Ac and put the temp to high for 5-10 mins the noise would suddenly disappear. With the AC on I can...
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    3.0 tdi CDUC ( AC possible problem )

    Hi just a quick question. Could a faulty ac compressor cause enough problems on engine load that you would notice slight power loss or like the engine is dragging something?. also Can faulty AC cause a rattle only under load but not necessarily during idle ?. many thanks
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    S tronic jerking

    Hi All Have a problem with the Dl501 stronic. When the car is in D from a standstill and I release the foot brake the car Jerks forwards. I also see the Rpm suddenly drop and pick up again. It does this almost every time but seems to be worse the longer the car is stopped in D with the foot...
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