Suddenly loses revs and cuts out when driving, always starts first time in the morning but then wont start after just a 5 minute journey, Have changed coil and all the leads any suggestions

Ian, August 2011

could be any number of things, but if it starts fine when cold its possible it might be a problem with the lambda sensor (otherwise known as oxygen sensor)
It could be reading the exhaust gasses incorrectly and sending too much fuel into the engine.
it really needs a diagnostic check (or at least an exhaust emission test) to confirm this.

steve, August 2011