I have just had a full new head and the car was fine for the first couple of hours and now its lacking power doesn't go over 5mph the fans are always on even when cold and they is black smoke coming out the exhaust.
The codes what are coming up on diagnosis
DTC: P2184,Coolant temperature sensor, radiator outlet; signal too low
DTC: P0672,Cylinder 2 Glow Plug Circuit
DTC: P2185,Coolant temperature sensor, radiator outlet; signal too high
DTC: P0196,Oil temperature sensor; Implausible signal
DTC: P2279,Intake Air System Leak