Transit mk7 starts first time but won't run
 

Mk7 2.2 transit starts every morning first turn of the key don't even have to wait for the glow plugs but engine management light on dash runs rough but shows 0rpm on dash for approx 30-120secs and won't respond to throttle or clutch then engine management light goes out rpm reads normal idle speed and drives like a dream

Have you had the fault codes read?