Been a member for a good while, long time reader, not frequent poster...
Strange problem with my Altezza RS200... battery had been going flat for a while and eventually died. Since I didnt know the age of the battery, decided to get a new one... Upon starting up again, the revs started jumping between 2000-2500 revs... disconnected battery, left for half an hour, started motor up again and left running for another half an hour... revs eventually settled down, job done! Jump in car next time and starts doing same again, but with a smell (like bad fuel mix or the like) coming from exhaust. Thinking a few things... throttle body needing a clean, sensor problem, but not really got an idea. Anybody else had a similar issue?
Thanks in advance,