Thanks for that Brian, will get the garage to check that one out. Cannot find what the voltages should be on the AFM - any info would be useful. Incidently I don't think the flap can be mis-aligned otherwise it would be sticking. However, the gap is not uniform along the edge of the flap. Perhaps a vacuum check might produce something. Incidently, the cat has been removed - hence the open loop emission readings.

Regards

Pete M