this is an itermittent fault that is getting worse the customer drives down the motorway the engine justs cuts out when he is cruising,he pulls over turns off and on and the engine re-starts it sometimes runs rough like a multiple misfire but he can ride through this i have been told that the fault is the throttle body ,I have spoken to BBA RE-MAN and they say that they have wiring faults on the plugs that go to the throttle body,I have spoken to my jag agents who have been very helpful and they say there is a wiring kit available before i order this has anyone come across this problem thanks john