Right, I've made a new engine earth to replace the cam cover>ignition coil as the old one was pretty worn out, and also tapped into the earth of the engine speed sensor wiring. I've earthed it to a threaded stud next to the starter motor. Scanned with vagcom, cleared then took it for a drive. Even though the misfiring was occurring every so often especially when on load, the fault code didn't return after a drive around the area (it used to come back after driving the car just down the road literally). So for now I think it may be sorted and saved myself £50 for a new sensor. I'll use the car for a few more days and see if the mifiring comes back, and scan it with vagcom to see if the fault has reappeared. If not then I'll spend the money on a solid front engine mount as it needs replacing and I've heard very good things abut solid ones
Again, John and Paul thanks a million for all the help as usual
