Steve Q

Keep us posted on how you get on

Keep us posted on the results of the parts tests.

That I'm not sure. If you go over 70mph it should raise automatically if it has that functionality. But as you can manually control it via a switch then it's worth considering the switch to be at fault. Similar to how headlight switches causing light issues when they fail if that makes sense? As I say it's just an educated guess.

I'll admit batteries cause electrical gremlins when they start to fail but usually very intermittent ones. As I say could it be the switch that controls the spoiler? Or the sensor that controls it automatically raising/lowering

Thank you for your input 🙂 it's such a tough decision as I want longevity, and ease of repair which Is why I think either a simpler engine or more modern engine. The problem I'm finding is any advice on similar builds.

Make sure the Cambelt and water pump have been changed and the auto gearbox has been serviced regularly. Check service history and check MOT history on DVLA site. Make sure all electronic items work such as auto handbrake, AC and mmi. If looking at diesels the biggest bills come when needing to replace the dpf, egr or turbo.

I'd suspect eBay is your best bet including international sellers

Now that's a good question. I'd budget at least £160 for diagnostic worst case scenario. I'd it's mmi might be worth sourcing a second hand one that can then be coded to your car.

No probs buddy. Hope you're doing ok. As I say I'm still unsure what option to take. I do think the 2.5tdi engines days are numbered for parts availability hence why I'm considering other options.

Could it be an issue with the high pressure fuel pump?

Yea an Audi independent is an option or an auto electrican

Just a quick update, the guy doing my engine swap has been delayed massively due to his other personal commitments. Still looking at other engine options than the 2.5. not looking for smaller engines such as the 1.9 etc. Still torn as what route to take. I do appreciate it seems like I'm going in circles regarding engines. But I'm torn between performance or reliability, the latter for being able to get parts when on road trips. One of the biggest issues is that Audi is the only modern manufacturer that produces cars that are fwd with a longitudinal engine. Most cars are now transverse, those that have longitudinal engines are either 4wd or rwd. Regarding technical matters, my plan is to get the imobiliser removed from the instrument cluster so that they can be used for any engine option. There would be no imobiliser in the fuel pump as I'd run one suitable for the engine. Regarding emissions, as my A6 was registered in 2002 (02 plate) under DVLA rules it has pass the emissions figures stated for the year the engine was produced. For example 1993 for a land rover 200tdi, 198x for an isuzu 2.8 etc. Naturally I'd be notifying DVLA of engine change. Option 1: Fit a simpler diesel engine that's more mechanically simple such as the Isuzu 2.8 4jb or the land rover 200/300tdi, both of which are inline4 and will be slower but are some of the most reliable diesels ever and will run on veg oil. The Isuzu has the same clutch size as the A6 and the land rover engine is the same cc as the A6 which means notification to DVLA simpler. The drawback is both engines a long strokes. So would require the bonnet to be raised. Option 2 Fit a v8 petrol engine, which would be a tight fit but doable. Not quite sure how this will work in the fwd setup. The Audi 4.2 will bolt straight up and parts are available as it's production run has been longer and as it was available in quattro I'm thinking this could easily be run in fwd. Chevy small block (lt/ls), is more mechanically simple and parts are plentiful in the state at least as it's the most mass produced v8. Also theres a direct adapter plate for this engine to my current gearbox. Not quite sure how this would work in a fwd configuration though as ls are usually mated to rwd setup. Rover V8 which has great parts supply but least reliable V8 option but cheaper to repair than the other two v8s. Not quite sure how this would work in a fwd configuration though as rover v8s are usually mated to rwd setup or 4wd. I'm assuming it's doable. Lexus 1uz engine which is one of the most reliable V8 engines ever made. Just worried about parts availability. Not quite sure how this would work in a fwd configuration though as 1uz are usually mated to rwd setup Option 3 Fit a totally different engine, possibly transverse which I can mount longitudinally. Such as the Toyota 2ar-fxe or the mercedes a45 any engine. Any thoughts would be greatly appreciated.

Id recommend a diagnostic check to see if any fault codes flag up. I'd suspect an issue with the mmi or with the sensors/wiring that runs from the engine/ECU to the mmi.

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 I do like the old shoguns. I'm sure you're knowledge will be invaluable 🙂

You're welcome 🙂 I'm assuming the battery was coded to the car? I'd recommend a diagnostic check to see if any fault codes flag up

You could have the sub moved but this will void the warranty regarding the sub. A spare wheel from an A6 should fit. Might be worth buying one a d fitting it in the boot without the foam as you suggest to see if it fits over the sub.

Please keep us posted on how you get on

Has the replacement fuel pump been coded to your current car ECU and instrument cluster? I ask as I know even on my older A6 C5 the fuel pump has to coded to the instrument cluster and ECU as it's an anti theft measure and part of the imobiliser system.

No probs at all 🙂

If there's still water under the carpets then this could be damaging the comfort control module. I'd recommend a diagnostic check to see if any fault codes flag up

No probs, the fact it's a 1 owner car can also be a very good thing. But bare in mind it is a 10 year old car so could get some niggles.

Sorry it should say ABS sensors

As the title says can a transverse engine be fitted longitudinally? I'm still struggling to get the A6 back on the road, and obviously considering other engines than Audi. As you know I've considered everything from longitudinal v8s thought to i4 engines from Isuzu 2.8 or land rover 200/300tdi. But also wondering if a 2ar-fxe Toyota engine and gearbox from a MK4 Toyota RAV4. This engine is transverse but wondering if it or any other transverse engine would fit?

Do t blame you. It's bang out of order

Ow that's naughty, as I thought software updates are FOC and classed on the system as a recall. Or they used to be when I worked at Volkswagen