Leaderboard

Loss of stop/start and radio presets are typical of a dying battery. Get it tested on deep discharge equipment, and if a new battery is needed get it coded to the car.

Hi the idea of publishing the codes you have is to narrow down the components that may be causing this, you say that the vehicle was laid up for two years and you have blown two HPFPs therefore I would suggest that the high pressure side is in overrun which is eminently checkable on live data, my guess is that its the fuel pressure regulator playing about, this meters the fuel pressure within the rail and is electro mechanical therefore it can stick slightly and cause insufficient fuel to the rail causing flat spots or stick wide open and the HPFP tries to keep up with what it thinks is demand, the return system just loses what it won't use, using live data check the rail pressure at idle and then through the rev range and see if the figures add up, don't know what the rail pressures should be ideally on the DETA engine you have but I know if the lift pump in the tank is high around 600lpm you have a problem further up. Steve.

It's true I can not help you Josh if you are not prepared to either do any testing or provide suitable information to aid a possible diagnosis. If all you want is speculation and guesses then you don't need my help. After all you claim to be "fairly car literate and I'm usually able diagnose and know the problem..." I looked up Power Engines and saw the company supply new and re-conditioned engines, so can you be sure the engine you received was genuinely new? The company lists this for your car: https://powerengines.com/collections/all?filter.p.m.custom.make=Audi&filter.p.m.custom.model=Q5&filter.p.m.custom.year_multi_selects=2016 The price of $3199 is impossibly low for a brand new engine, even before it is shipped from Germany, so what do you conclude from that?

Good morning Josh, Let me start by pointing out that you are in grave danger of discouraging others to help and advise you due to the unfortunate attitude you display in your last paragraph. Only you know the absolute facts about the circumstances you find yourself in, and other’s interpretation will be based solely on your ability to clearly convey those facts in a written form. The use of capitals (and particular bold capital) in the context you use them - on this forum and most others are taken as a demonstration of frustration against those who are trying to be constructive, and that is both rude and unacceptable. You emphasise NEW ENGINE (your caps), and Power Engines, but don’t quantify what you mean by ‘new engine’. Could this be totally ‘new’ à la ex VAG, stripped and fully reconditioned and fully bench tested, or simply removed from a scrapped vehicle, given a power wash down, wrapped in clingfilm and sold as ‘new’ I.e. new to you. I think it would be worth you walking back to the first bus stop Josh, and giving yourself a chance to reconsider what you write. Thanks and kind regards, Gareth.

That’s very helpful, thank you.