Afternoon gents,need alittle help with a Vectra that's in at the moment as again its a system im not familiar with.
Vehicle will start & run for about 10 mins then cut out and will not restart until waiting 2 mins and cycling the ignition. It will also cut out if revved. Im aware of the siemens pump breaking down and this has a continental pump on it, but I thought these only resulted in low pressure faults.
DTC P1191 Fuel pressure too high.
Live data desired 4999 Kpa watching actual you can see it rising slowly upto 14500 kpa and then it cuts out.
here are some images:
KOER :

KOER Cut out:

I can see that the duty only changes very slightly but not really a change in the current. Does this suggest a faulty pressure regulator or what should I measure next to help pin point.
Thanks,
Dave