can anyone help please with this on going problem I have with my 1.9tdi 130 Skoda.

during the colder months when driving, it doesn't matter if engine hot or cold, sometimes when I start to accelerate the engine goes juddery, and the power drops, this doesn't happen all the time, and doesn't happen when revving engine in neutral only when driving, also now and again after the juddering the car drives as if there is no turbo, by turning the ignition off then back on, all goes back to normal!

reading some forums it could be an air intake problem but its been on a dianostic machine and nothing was found!

please help

The ECU is putting the car in limp mode, which is cleared by cycling the ignition.

You need to get it looked at on VCDS/Vagcom for fault codes. There are many VAG codes that are not recognised by generic code readers,