Fiesta 1.6 tdci odd throttle behaviour, Turbo?

[Chris_w666]

Help.

It may be the weather or just me having spent a week in transits, but the fiesta seems to have a slight issue. When sitting at between 2 and 2.5k rpm (the middle of the torque curve) on a steady throttle in 3rd or higher it feels like the throttle is being pumped gently. I was wondering if this was turbo related as when I open the throttle it pulls much harder to 3.5k rpm than it was but I am worried that this extra urge could be pointing to something a bit broken. The car has covered 37k miles and is booked in for a service at the end of the month, but the warranty doesn't end until May 22nd. Should I see what happens between now and its service or pop it into a dealer just in case?

[Dicky]

had something very similar in our 1.6 tdci c-max, it went in with what seemed to be a slight miss when accelerating, they checked it all but said they all tend to do that sir!!

so it may be a design fault

[andy-xr]

Cold air and fuel mixture altering is more likely. Mine does it from cold startup as well, fine when under bonnet temps are more settled

[Chris_w666]

Cold air may be the problem, was much warmer for the last couple of days and it has been notably normal.