Another "engine and acceleration issue" thread with a 1.9 JTDm.
I've been having some originally minor engine issues on light acceleration which have worsened a great deal of late.
Symptoms are a wobbly idle when starting from cold then all fine particularly in the morning motorway commute to work. The last few days this problem's got much more prevalent - at it's worst when moving through slow traffic - on a light throttle, as soon as I hit between 2.5 -3 k revs I get a pulsing / juddering / misfire type situation that's becoming really annoying and noticeable in this rev range, in any gear but again under light acceleration. Doesn't seem to do it < 2k revs.
It doesn't do it until the engine is up to temperature and it seems to have become worse since we've been hit by this glorious warmer weather... on heavier acceleration I don't get the same experience.
Obvious candidates to me are the EGR which I'm looking to get cleaned or replaced (a little bit of warranty left). I did have the ECU remapped by Angel soon after getting the car but don't have any real before or after comparisons - even if that makes a difference.
I've used Redex cleaner, given the car a several good hard thrashings up the M40 but no difference. As an aside, I can't say I've ever noticed a DPF regen occurring - I've used Vpower diesel since having the car (for about the last 4 fills / 2k miles).
Again, I would put money on the EGR but any other similar experiences or other potential culprits?