After quite a lot of work with Adrians car, replacement of many items, we are still quite positive on the 7000rpm problem being an exhaust problem, blockage in the silencer, but as yet have not got to try this with a known good exhaust.
I think the Trouble code of 1, oxygen sensor is a bit of a red herring, but also agree with you that its poss fuel/pump main relay problem possibly. mainly because if the fuel pump was cut while the engine was running the engine would suddenly run weak just before it stopped and the engine management system would have tried to enrichen it with out success.
A fuel pump/main realy is around the £50 mark, an oxygen sensor £100+
How does it run generally? hesitates at low/light throttle???
Steve M
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Its all gone Norfolk!!!
Now in the Lotus position.