Interesting! Guess I'll have to get it to a Ford dealer...

Thank you so much unthrottled!

Just in case it sheds any further light, I can perhaps describe the fault a little more precisely: The car seemed to respond normally at VERY low revs (ie. barely touching the accelerator) but any attempt to increase revs from that point onwards had literally no effect. If I changed down to lower gear, the revs of course would then be higher and it seemed I could then muster a tiny amount of acceleration.

Does the fact that there was a decent amount of power initially suggest that the turbo cannot be the culprit? (I'm hoping a turbo issue could not give rise to an intermittent problem... )

Anyway, perhaps unthrottled has already said as much as can be said at this point... I will report back once I've been to Ford dealer.

hi i run a taxi hire company and have 27 mondeo tdci's and come across this problem quite alot and 9 times out of 10 it is the intercooler pipe at the front of the engine underneath the EGR and when this pipe bursts or splits (very common problem) massive power loss occurs and it will sound like it is hissing heavely under attempted acceration

if it was a blocked or failing EGR there would be excessive black smoke on acceleration does yours do this ????????

hope this helps you

kind regards Neil

ok would you drop me an email when its fixed and let me know what caused it please

kind regards Neil

Problem was that egr valve needs replacing. Ford dealer quoted £339 all in for the job. Just wondering if this job is likely to be much less from an indie.... and whether any particular expertise or diagnostic equipment needed to do this?

Decided to replace just to be certain. Got the new part for £96. Local indie garage will fit for £45.

Thanks for all replies. Am just about to start a new topic with another query related to this car...

Edited by cosmicjazzer on 18/08/2011 at 19:54

Order an EGR blanking plate off e-bay and get it fitted when the new valve is fitted

Won't an 06 car recognise that the expected air flow is outside the expected range and trigger a CEL?

Order an EGR blanking plate off e-bay and get it fitted when the new valve is fitted - also get the hose checked, splits can be difficult to see as the gunk fills the split.

daveyjp: Thanks for reply. Excuse my complete ignorance in these matters... could you tell me which hose you mean? :)

On this year vehicle the turbo has an electronic actuator. They get blamed for many a problem but quite often its down to the wastegate being sooted up and very stiff so the actuator cannot close / open it properly. Try taking it off and see if the wastegate moves freely by hand. Usually these throw up a fault code though.

Im having similar issues with a 53 mondeo 130 now. Biggest culprit is usually injectors and its where all my faults point to at the moment. Maybe worth getting yours tested.

Well THIS problem with the car (there are others!) has now been fully resolved. The culprit was eventually found to be... the MAP sensor. Car flies now! I'm happy it wasn't the turbo!