My 2010 1.6 diesel, with the PSA engine, runs perfectly with plenty of power, but, when the revs hit 2300 the engine gives a massive jolt then runs smoothly through the rest of the rev range. The engine management light has never come on, I have scanned with Ista+ which only showed 2 faulty bulbs and a friend scanned with his Snap-on tool which showed the same minor faults. I havw swapped the throttle pedal, removed and cleaned the throttle body.
Has anyone experienced this problem?

Davy