Hey thanks for that. I'll give it a go and if I can't find anything I'll punt it up to another garage.

I have a 1999 V40 T4 which (once warmed up) seems to race and then drop back on the revs. I can be standing in traffic with the hand brake on idling and the revs bang up over two thousand and then back down. Or it can just die. I notice when driving that it can also accelerate without any added pres...