Steve Q

Thanks for the heads up. Glad you got it sorted. 

I'd definitely be considering the thermostat 

This any good? 

https://id.pinterest.com/pin/800796377480863231/

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 bet you can't wait to collect it 🙂

13 hours ago, Christian said:

Thanks guys, the cars I have currently shortlisted are all S-Tronic with mileage between 78 and 110k. Will the timing belt tensioners need to have been done at this kind of mileage?

Mist definitely. And make sure the gearbox has been serviced on time. 

6 hours ago, Johan_swe said:

Problem resolved. I replace the tailgate lock. My conclusion is that the lock did not "signal" door open and this causes the towbar to not release etc....

Glad you got sorted 🙂 

I'd recommend a diagnostic check to see if any fault codes flag up. 

If you've bought it from a dealer then they have to fix it foc in the first 30 days from sale as you're still entitled to a full refund within that time. 

Aftermarket exhaust? 

If so, might be worth looking at powerflow exhausts. My brother and friend have oth used them and been happy with the product 

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 lovely looking rs4 👍

Get it back to the supplying dealer for them to sort. It should be free of charge if you live in the UK as under consumer you have 30 days for a full refund. 

27 minutes ago, Will XIL said:

Any meets coming up?

 

Should have been simply Audi next Sunday but it's been postponed till July due to wet ground 

10 hours ago, K.R. said:

The OBD scanner didn’t show any errors (probably cleared by the garage), but the light still remained. Everything “small” that could be related has been checked on the car. Module has been taken off and will be shipped tomorrow for reconditioning from Autotronics - delivery, VAT around £230. fingers crossed will be sorted 🤞🏼 

Keep us posted on how you get on 

Keep us posted on the results of the parts tests. 

7 hours ago, NJP10 said:

So Steve I’m I right in saying it’s only manually operated via the switch. It doesn’t raise automatically when you’re going above a certain speed?

Like I said before the fault doesn’t appear on local journeys 🤔

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 

10 hours ago, S-Cronic said:

For what its worth if it was me and I'd had the car that long and wanted to keep it I'd go for a rebuild / modification, at least that way you know it's been done properly and it secures some decent life into the car going forward, with the 2.5 TDi being so few and far between when it comes to second hand units AND the fact most garages don't want to get involved either way it's going to cost, BUT .... if you rebuild or modify it properly when its done you have peace of mind, and that is priceless, whereas second hand there is always that constant nagging in the back of your mind of "how long will this one last" 

Good luck what ever you decide.👍

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 

5 minutes ago, Moses said:

Any idea of costs?

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. 

13 minutes ago, audia4b5kev said:

steve  just sold my A8  TO mel  few weeks back 500 quid  had nown that   kev

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. 

9 minutes ago, NIck8855 said:

Hi , have audi a6 3.0tdi quattro 2005 . When you drive and touching acceleration pedal is all ok . but when you stop anywhere engine cuts off . No error codes . I change flow sensor , oil pressor sensor , new fuel filter . Some days drives ok . but most days cuts off . Any suggestions ? Tnx 

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

14 minutes ago, Moses said:

Ok I guess an independent Audi garage can do this? Hopefully it ain’t too expensive 

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.