2010 V12V fuel filter location? Help please
Discussion
Hi guys,
I did a long run in the very hot weather the other day and because I was stuck on the A27 in traffic for ages, I ran very low on fuel. I was then compelled to refuel at a local Tescos, (quite a grotty one too) which wasn’t ideal. Anyway, needless to say, my ‘Emissions service required’ light came on on the way home (again in the heat and traffic jam.)
AML diagnostics reveal that engine is running too lean on both banks. (Codes P0171 & P0174)
I’m thinking this could be either as a result of the heat in traffic, or a reaction to the Tescos’ fuel. ( I normally only run on premium grade fuel) I am thinking that as both banks are affected, it’s unlikely to be a split hose etc as each bank has its own independent air supply and so consider it unlikely that both banks would be affected with the same fault. My air filters were replaced less than 100 miles ago.
I therefore thought a replacement fuel filter/s? would be a good place to start, but have been told that the filter is in the tank and so is a major job to inspect and replace or clean.
Can anyone clarify this please? Surely this cannot be the case that the only fuel filter is in the tank!
Any thoughts or suggestions welcomed!
I did a long run in the very hot weather the other day and because I was stuck on the A27 in traffic for ages, I ran very low on fuel. I was then compelled to refuel at a local Tescos, (quite a grotty one too) which wasn’t ideal. Anyway, needless to say, my ‘Emissions service required’ light came on on the way home (again in the heat and traffic jam.)
AML diagnostics reveal that engine is running too lean on both banks. (Codes P0171 & P0174)
I’m thinking this could be either as a result of the heat in traffic, or a reaction to the Tescos’ fuel. ( I normally only run on premium grade fuel) I am thinking that as both banks are affected, it’s unlikely to be a split hose etc as each bank has its own independent air supply and so consider it unlikely that both banks would be affected with the same fault. My air filters were replaced less than 100 miles ago.
I therefore thought a replacement fuel filter/s? would be a good place to start, but have been told that the filter is in the tank and so is a major job to inspect and replace or clean.
Can anyone clarify this please? Surely this cannot be the case that the only fuel filter is in the tank!
Any thoughts or suggestions welcomed!
see Redpants: https://www.youtube.com/watch?v=8jiTRZkI63I
and Autodoc: https://club.autodoc.co.uk/manuals/universal-how-t...
for guidance
and Autodoc: https://club.autodoc.co.uk/manuals/universal-how-t...
for guidance
I had a similar, on my V8 Vantage , 2013, I entered the garage on fumes, less than 6 miles left it said on the dash, but I waited on the pump, where the person in front decides to do their weekly shop inside the station. Anyway, I dare not turn the engine off in case it didn't have enough to start, but sat there idling and then the engine threw up the same Emission System Service required.
So filled the car up, the alert stayed on, and drove home but it drove fine. Rang a few Aston garages who needed to see it, but that was not convenient, so got me a cheap OBD reader, next day delivery.
Code was something about bank 2 O2 sensor, which I decided must be to do the fact there was little petrol in it, so erased the code and it never came back.
So in my focus I have driven twice when the miles left ha said zero and no issue, but on the Aston I never let it get below a quarter empty now, as its just too fussy a car!
Kev
So filled the car up, the alert stayed on, and drove home but it drove fine. Rang a few Aston garages who needed to see it, but that was not convenient, so got me a cheap OBD reader, next day delivery.
Code was something about bank 2 O2 sensor, which I decided must be to do the fact there was little petrol in it, so erased the code and it never came back.
So in my focus I have driven twice when the miles left ha said zero and no issue, but on the Aston I never let it get below a quarter empty now, as its just too fussy a car!
Kev
Edited by kevin_cambs_uk on Sunday 23 July 17:36
Unfortunately I was stuffed due to the traffic and really hoped and thought that there would be a better fuel supplier nearby, but I only had one choice within range. The car runs fine as always, so hopefully the new tank of fresh fuel will sort the problem!
Thanks to all. It’s well worth being aware of exactly where the filter is though. An easy exchange it is not!!
Thanks to all. It’s well worth being aware of exactly where the filter is though. An easy exchange it is not!!
I keep one of these in the boot filled with Esso 99.
https://www.jerrycans.co.uk/product/5-litre-green-...
https://www.jerrycans.co.uk/product/5-litre-green-...
john ryan said:
First, clear the code and see if it comes back within a few miles. Most likely due to a different fuel quality. Don't over think it.
This, and running the tank very low turns off some monitoring, which may have flagged a spurious fault.I'd clear the codes and chuck some E5 fuel in it. This new high Ethanol content fuel can breach some fueling limits. A lean fault aligns with this.
Tesco Momentum was originally preferred by turbo engine'd car owners due to the high Ethanol content it had and knock resistance for high boost. I'm not sure what the current percentage is they use.
Ethanol will also absorb water, so if it was a shonky old station they could have water in the tanks which again would play havoc with fueling limits if the fuel had absorbed it.
Many thanks John, I’ve used half a tank of Esso premium 99 and the lights have finally gone out. Phew! First real issue I’ve had in 7-8 years of ownership, so I can’t complain really. (And it was self inflicted due to running my tank low.) I intend to put some Liquid Moly 8365 in just to clean the system, but alls well that ends well so many thanks to all.
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