tried everthing help metro 16v GTI

[sinky]

Loss of power engine will idle all day but apply power and it stalls. so far checked coil, fuel pressure,vacume leaks,checked ecu fault code 20 (oxogen senser) tried to change this but even lucas could not find replacement any ideas???

[sinky]

thanks guys fuel pressure ok compression test/dizzy/roter of the problem seems to be the oxygen sensor its a brass item with a push in connector but rover cannot find part and lucas says its not theirs ( its stampted lucas) anyone outthere with a K reg gti engine could you look at yoursl;