Hi, there has been several threads on this issue, but after trying most of the simple fixes I think it's time to describe my Mondeo symptoms and seek help before I put into ford garage.
Car was running great then suddenly there was a loss of power. I thought the turbo had blown, no warning lights. I continued to drive home, in what I thought was limp mode but after about 10 miles car started to misfire. Still no warning lights, but decided to get RAC to take me home.
Car starts no problem, ticks over and revs up OK in the drive. No warning lights but a little smoke out of exhaust. When I try to drive away the engine misfires badly, when it hits about 1800revs; car is essentially undriveable!
Read fault codes and got P0100, P0200 and P0300. Inspected turbo pipes, no obvious signs of splits or leaks.
Changed air flow sensor, no change. Changed erg valve, no change. Took off turbo air inlet pipe and check turbo, rotated freely, no signs of damage and only a very very small amount of side travel.
I have concluded it is nothing to do with air supply but more likely fuel delivery, but I do not have any test gear for this, hence garage next move. Unless there is someone out there who has experienced the exact same problem and can suggest a solution?

Thanks for listening.