Nissan Primera intermitently lossing power 2.2 DIESEL?

In Feb. 2009 the local garage said fault P1272 required SP valve to be replaced. After that fault P0089 indicated the fuel pump needed replacing. Include service that bill was 1800.00 pounds. Last week the turbo collapsed. A new turbo was fitted and the car was going great. Intermitently it now losses power and the garage has said fault P0089 has occured again. Surely a 54 plate would need another fuel pump. Can anyone help PLEASE