It's the same all the time. The hall sensor error came up on diagnostics and it does run a bit rough on tick over (sounds like it's running on 5). My first thought too was to check the fuelling system out, but I can't see any obvious problems, unless there's a problem with the pump? When I turn the key it sounds like the fuel rail primes with fuel, but then the fpr only kicks in a split second before it decides to start!?! Any ideas Nick? Thanks, Katie