406oc.co.uk

Hi,
What would cause an HDi 110 to chug at idle?
The other week, when I plugged up PP2000, it showed a fuel pressure coherence fault. I had a spare fuel rail with both sensor's already on it so swapped it for this one. Problem still the same, but over the last few weeks has been getting worse. The wife now calls the car Chuggaboom!!!
Once the revs exceed 1300 rpm or so the problem clears and the car drives alright above approx 40 mph.
Any ideas? is it the high pressure pump at fault or one of the sensors on it?
Thanks in advance,
Graham.

Possible faulty fuel pressure regulator? (Think it's relatively common).
That's what the error code implies.
Did you clear it / did it come back?

Could also be a faulty injector - a leak off test can be done for pennies and should show this up.