D4JWW wrote:

Sorry to hear you frustration there, only good news is you don't have fault code I had which required new turbo due to stuck variable vanes, I would say the over boost could also point to turbo. Hopefully disco mickey would respond soon, can you hear the varible vanes move after switching off the engine??( trickey with EGrs also going)Could be worth hard reset and leaving battery disconnected for 12/24 hour and charging at the same time?

DSL wrote:

Split intercooler hose springs to mind.

Already done, see my OP

discoboy wrote:

I've got the following codes:

P0104 mass or volume air flow circuit intermittent
P0140 O2 sensor no Activity
P0132 Oxygen sensor high voltage
P0190 fuel rail pressure circuit malfunction
P0234 engine over boost condition

Symptoms with the codes are black smoke on kickdown or under load, loss of grunt over 70mph and sluggish acceleration in the mid-range. Smoke disappears when cruising.

A TDV6 doesnt have an O2/Oxygen sensor, not sure why those codes would be present...

I did wonder if it was a V8, but then there wouldnt be an overboost fault...

Looking at your faults though, it looks like you have a potentially faulty turbo with P0324, but P0190 is related to low fuel pressure, both of which would cause engine system fault to be displayed on the dash.

Personally, I would advise fitting a new fuel filter, to eliminate the cheapest of options, and also have the fault codes cleared afterwards, and see if any faults return