A8 2.8QS '52 plate engine management light

[jayzee]

I too have heard that Jet petrol throws up an engine management light on quite a few cars.

I looked into this when my previous car did this very same thing after filling up.

[Ska]

IIRC a while ago there was a big hoo haa about tesco fuel that contained silicon that buggered the Lambda sensors. These don't always throw out codes when going south. Ask the guys at A4Audi to check the measuring blocks for these on VCDS to rule them out if nothing else.

[Titan]

Well the car eventually made it into A4Audi. I didn't have time to take it in so my Mum popped in with it today and they reset the light. They said they knew the car well and told her the light had probably come on as the car hadn't been driven much recently? Fair enough.
They didn't charge and the car has is still driving fine so fingers crossed it stays out.
That's the kind of customer service that will make me take the car back for all future work.

[The_Laird]

Pleased to hear that it doesn't sound like a major problem. They're right - since I had the S8, the A8 didn't get out much - especially in the really bad weather. But you'll find the customer service at A4Audi top notch - can't recommend them highly enough. Unlike most places, they actually do give a s**t!

[Titan]

Further update - The engine management light came back on again about a month ago. The car went back into A4 Audi. They reset the light and had a more detailed investigation. They said one of the sensors after the cat was flagging the error. Apparently they have seen this before when non Audi cats have been fitted. The cats are reasonably new I believe so it's just one of those things. The light hasn't been back on since (probably 3 or 4 weeks now)
Don't know if anyone else has had this issue so thought I'd just post up for info.
Price wise, genuine cats are an arm and a leg so I'd imagine most people would put on after market ones so just wondered if anyone has had similar issues?

Anyway, I took the car for a decent run at the weekend and it's running beautifully. My Mum loves it and I'm thinking about getting one for myself now even if getting the wee man in and out of the baby seat was more difficult than the B(loody awful) Class.
If I could just shift one of the others in the fleet............
How do I convince my wife that an S8 is the same size as her B-Class?

[Singh]

Just tell her its safer

A8 Doc on here may be able to program the sensor out for you or something. He does custom mapping.

[PsYcHe]

there are extenders for the O2 sensor housing that get round the problem.

[PsYcHe]

there are extenders for the O2 sensor housing that get round the problem.

[sloss]

Originally Posted by jayzee

I too have heard that Jet petrol throws up an engine management light on quite a few cars.

I looked into this when my previous car did this very same thing after filling up.

Jet and the Supermarkets and the small independent fuel retailers don't have their own refineries, they buy on the spot markets.

What can happen is that Jet will send in a Contractor to pick up fuel from Grangemouth (Scotland's distribution centre) and they may not use a tank clean to the fuel they are picking up ie last trip it was diesel, this time it's unleaded. It should be clean, but that's my theory why I always use Shell

[The_Laird]

I think it's my fault - I'm a cat jinx! Both cats went on this 2.8 when I had it, one went on my S8 just after I bought it and a couple of weeks ago I bought a Puggy 206 for my daughter and gues what.....the cat went on the way home!
Grant - I got a nice pair of stainless sports cats with a lifetime g'tee fitted to the S8 from a place in Kirkintilloch for half the price that Audi wanted. It's Semtech Motors. Might be worth giving them a call for a price on 0141 7761919
BTW - can you borrow the '8 for the meet on April 29th?