I have a 2003 astra sri diesel, about 3mths ago started getting intermittent loss of power and occasional jerk while driving. Sometimes have spanner light on sometimes light next to it (cat conv?) error codes of P1105 and P0105 keep being read by garage. Have had hoses checked and a new MAP sensor and egr cleaned but thing just keep getting worse. Garage now says diesel pump ecu at cost of over £800 and has already cost £300 upto now. Does this sound right or any other ideas. Car has full service history from dealer so has been well looked after. Help please!