Ropey fuel ?

Ginger_Nuts_2

Milko wrote: »

daft ??? ... I can't say but presumptious ... certainly

My wife fueled "her" car on a Tuesday morning with the fault being diagnosed on the Thursday afternoon by which case my car had already been fueled earlier that morning. At no stage would it or did it appear to be a localised fuel problem until the 2nd car dispalyed similar symptons.
You're also quite correct however, Bangor has more than 1 filling station & since discovering the problem with my own car, she's only been filled at another station using super unleaded, so thank you for your help :rolleyes:

'erm so right, it was two days between fuelling up and the fault occurring, obviously the fuel then:rolleyes: And 6 sensors:rotfl: Yup right:rolleyes: Not the brightest mechanic then, why not just stick a new engine in it:rotfl: You need to find a proper garage with correct diagnostic equipment and then let us know, exactly what sensors he replaced, that would be interesting, most likely it would be the lambda sensors that would be affected, rest would go out of parameter if they gave wrong reading, but wouldnt need replacing.

But anyway, yes you're right, modern cars are much more sensitive to 'cheap' petrol, and many even now mention in their handbooks that certain types of petrol should be used as in shell ultimate is recommended. But like most of us, we're all too tight and become obsessed with treating our cars with complete distain until something goes wrong then we all search for something to blame rather than our own tightness in skimping on servicing, fuel etc

ballyblack

shell ultimate is recommended. But like most of us, we're all too tight

This fuel or BP Ultimate are more expensive but they will give an engine more power per litre so overall they can be more economic.:T

iseethestrals

Tesco get their petrol from same depot as most other petrol stations in NI. Know a driver who delivers to various petrol stations

jenny-wren

I also heard, quite a while back, that the Supermarket petrol stations got their fuel from the same places that supply the likes of BP and Shell. I'd assumed that by shopping at the supermarkets I was getting the same fuel at a cheaper price.

But then I read the post here and remembered that a colleague had told me my car troubles were most likely down to dirty fuel.

Now I'm really confused!!!! :doh:

ballyblack

Supermarkets don't sell premium fuel such as BP ultimate or the Shell equilavent.

They sell the basic fuel that does not contain the exact same additives

You get what you pay for with supermarket fuel

Milko

Ginger_Nuts wrote: »

'erm so right, it was two days between fuelling up and the fault occurring, obviously the fuel then:rolleyes: And 6 sensors:rotfl: Yup right:rolleyes: Not the brightest mechanic then, why not just stick a new engine in it:rotfl: You need to find a proper garage with correct diagnostic equipment and then let us know, exactly what sensors he replaced, that would be interesting, most likely it would be the lambda sensors that would be affected, rest would go out of parameter if they gave wrong reading, but wouldnt need replacing.

But anyway, yes you're right, modern cars are much more sensitive to 'cheap' petrol, and many even now mention in their handbooks that certain types of petrol should be used as in shell ultimate is recommended. But like most of us, we're all too tight and become obsessed with treating our cars with complete distain until something goes wrong then we all search for something to blame rather than our own tightness in skimping on servicing, fuel etc

Please take the time to read previous posts, ie. the 1st one

It was clearly stated the fault occured on her way to work after fueling.
The car was then parked up until the mechanic could get a look at it. where his diagnostics computer suggested it was O2 sensors at fault. He had replaced these the previous 18 months so ruled them out.
The 5 or 6 senors alledgedly at fault on MY car, where diagnosed with BMWs own machnery ... just to highlight, these are 2 different vehicles.

Whilst the Lambda sensor was 1 of the faults appearing, so was the MAF, crank sensor, O2 sensor bank 2 & 2 and a CAT fault.
Since this 1st post, I've narrowed it down to the Crank sensor which has been replaced & whilst I'm still getting a very slight flatspot, the car & EML seem to be behaving fine.

In response to my own intial question on this topic, it seems clear that there are still people having problems with supermarket fuel.

happy_gardener

"Try something new today" with sainsburys fuels.They sell super unleaded (from BP) alot cheaper than the likes of shell/BP.Also sainsburys are doing the spend £50 in the store get 5p per litre off,quite a wee saving!!!!

Ginger_Nuts_2

Milko wrote: »

Please take the time to read previous posts, ie. the 1st one

It was clearly stated the fault occured on her way to work after fueling.
The car was then parked up until the mechanic could get a look at it. where his diagnostics computer suggested it was O2 sensors at fault. He had replaced these the previous 18 months so ruled them out.
The 5 or 6 senors alledgedly at fault on MY car, where diagnosed with BMWs own machnery ... just to highlight, these are 2 different vehicles.

Whilst the Lambda sensor was 1 of the faults appearing, so was the MAF, crank sensor, O2 sensor bank 2 & 2 and a CAT fault.
Since this 1st post, I've narrowed it down to the Crank sensor which has been replaced & whilst I'm still getting a very slight flatspot, the car & EML seem to be behaving fine.

In response to my own intial question on this topic, it seems clear that there are still people having problems with supermarket fuel.

Yup, it's well known a crank sensor can be affected by ropey fuel:rolleyes: :T

concerneduser

Anyone else had any problems with this recently? I never use Tesco Knocknaogoney but flled my car up there last week. Now, I have the exact problems people in this thread are referring to - engine warning light, car shuddering at a standstill etc etc. The car has ran without a problem since new.....................

sheerdelight

There is seldom a problem with petrol though not unknown for it to be contminated with water etc though extremely rare. If fuel was that bad there were be a string of cars along the roadside. People put petrol in diesel and vice versa swearing blind that they didn't make a mistake and yes cars do have faults with sensors etc. All too often mechanics blame the fuel for no good reason. I buy in Tescos most of the time and never have encountered a problem. I stay clear of unbranded sites.