Engine management light on after using tecso 99 ron

[paulos]

Last month I had K-tec fit one of their ultimate sports cat and exhaust systems. At the time of fitting (probably because it was disturbed) the lambda sensor needed replacement. They had a second hand one and light went out. All good until today. Don't know if this is a coinsidence but after I put in Tesco 99 ron (which I never have before), I usually use shell V power, My engine management light coma on. Has anyone else had this? Now the light is on, will it goout once I change the fuel or do I have to have it reset?

 

[Fletcher]

The fuel shouldn't have casued that to happen.

 

[markblack172]

sounds like it could be the lambda again
get someone with an rs tuner to plug it in and check it for you

 

[paulos]

The fuel shouldn't have casued that to happen.

well.. yeah that's what I thought but doing a search on here i found a couple of people saying that it occured after using it. I've never used Tesco fuel before and now it's come on? Will the light just go off on it's own? I disconnected the battery for 20 about an hour. switched on the ignition without starting the engine and the light was still on.:dapprove:

 

[sammyhale22]

deffo engine sensor related problem. somethings come loose maybe?

 

[jaleach]

I've been using Tesco 99 for last last 6-months and seen no problems.

- Additionally, I replaced my lambda last month and the MOT emissions came off perfect, plus the car seems to idle/rev smoother.

 

[paulos]

I've been using Tesco 99 for last last 6-months and seen no problems.

- Additionally, I replaced my lambda last month and the MOT emissions came off perfect, plus the car seems to idle/rev smoother.

This is the sensor before the cat? yes?
Thanks mate

 

[jaleach]

This is the sensor before the cat? yes?
Thanks mate

Yep the one before the cat.. from reading on here, the one after doesn't do a lot. The front one dictates the fuel/air mix.

 

[AlexHealy]

Get a diagnostic test done at a local electronics garage, it could be something small like one of the pedals has come loose?

 

[paulos]

anymore thoughts on this?

 

[Aluco]

VPOWER is 99ron now too.

 

[Dip]

Depends how old the second hand sensor was?? Its probably gone. Petrol shouldn't cause the light to come on.