Thanks for the comprehensive reply. I'll start with the plugs. Symptoms sound more like the first ECM-903C code but I'll check everything. Much appreciated.

I have a 1999 S80 T6 which has had a replacement XeMoDeX ETM fitted about 12 months ago. This sorted out my previous problem with the ETM failure that most people will be familiar with. I now have a problem with the vehicle where the engine is misbehaving :( At start-up, it revs to ~4000rpm, surging...

Hi. I have a problem with my instrument cluster and I need some advice on disassembling the DIM. The back-light on the text display unit (lower left of DIM) is not working so I cannot see the normal informational messages that would be displayed here. (The text display is working as I can faintly re...