i hope the title explains correctly but if not here's a quick overview. Yesterday I developed an issue with my 2006 focus 1.8 ltr tdci sport. When driving at around 50 mph cruising, and I noticed a warning message stating 'engine system failure' and when I slowed down at a junction, I started to pull away and I noticed a massive loss in power, the Rev counter revs up to 3k then stays there as if it's rev limited and takes for ever to build up speed. Does anybody have any ideas?

To add insult to injury my bonnet has decided to not open as if the release mech has failed but it worked less than a week ago any ideas how to open without getting a ford dealer to open and replace bonnet catch for £200?