2003 S60 D5 Problem

[Ian 67]

At the beginning of Jan 20 my partner ran out of fuel in our old S60 2003 D5 at 210 000 miles. When I refueled it it was difficult to start. A few days later a problem developed a loss of power during acceleration, this was immediately followed by the warning on the dashboard saying engine system service urgent, the car would only give limited revs and hence limited speed. Once I could safely stop the car I turned the ignition off and back on. Fault and warning disappeared.It did this on every journey for a few days so changed the fuel filter although the one I took off was only a few months old.The problem continued before I came to total stop and could not get it started again.
The RAC came confirmed a low pressure in the rail and that the low pressure pump in the tank had gone.
The vehicle was recovered and the pump replaced drove fine for a few days then same problem occurred. Would not exceed 2500 rpm and kept stopping I could restart the car the fault message would clear but soon as I tried to accelerate same issue "ENGINE SERVICE URGENT" car comes to a stop.
RAC called and confirm again Low pressure and pump not working all in less than 10 days. Garage replace pump a BOCH unit and I pick up the car. However, on the journey from the garage problem was back. It grew more frequent and ended up with the car stalling over 30 times during a 10 mile journey.
Returned to garage and vehicle plugged in to diagnostics issues displayed were Air mass sensor error, slight fuel system leak , and turbo solenoid issue.
MAF sensor replaced but problem continues.The car is not drivable at this time. I did not get the codes from garage at time. Any one have same issue or may know how this can be resolved.