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the most common issue on this engine is a failure of the fuel pump
other common causes are injector failures, other fuel system failures, and turbo failures.
as your symptoms and your warning lights are not specific, your next/only step at this time is to have the computer fault logs read from the vehicle to determine what fault was recorded as this will point to the problem. Most likely it is fuel pump or fuel system related.
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one thing I did do is put Tesco's ultra 98 octane in which supposedly cleans fuel lines etc when I normally use anybody's unleaded 95 octane could this be a contributor ?
if it is proper unleaded fuel I wouldn't expect it do be, but there is no need to use such a high octane fuel and the car is not designed for it, so it could contribute, yes
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