Rough idling ......

Dan-A3-Quattro

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Hey guys wondering if anyone can shine some light on my rough idling problem
i have an A4 quattro 1.8t 163bhp (BFB code), after returning from a long stint on the M/Way oil light came on so topped up when I got home, the the rough idle started, fault code coolant temperature sensor (g62) signal too high, went to TPS and bast a brand new one with seal and clip but no different, I think coil packs are ok, then excessive idle fault came up, any one any more ideas......
revs up fine and drive ok just when at idle