Audi 80 tdi juddering bucking jerking

[diego666]

Hey there Andy,

not sure about the diesels but the dual mass flywheel has been employed in the turbo gas/benzin cars for almost 20 years. Likely in the tdi's tho.

Also, in the last couple weeks i disconnected the fuse to the instrument cluster-to cancel the VSS signal, to experiment without doing anything ~permanent. THe car is certainly runs better but still suffers if driven over 20 minutes. Luckily i haven't been stranded anywhere (just short trips) and don't need the car most days. I am really thinking it's a fueling issue because at idle, it runs fine indefinitely. Only once i drive it, accelerating under regular conditions, does it start coughing.

Has anyone tried disconnecting the number 3 injector sensor instead of the VSS in order to supply the ecu's fueling signal from the VSS only? Altho if i remember correctly, if the ecu receives no signal from the injector sensor it *may kill the engine.

Because this issue still exists i wonder if perhaps both these sensors in my car are messed, or if changing out relays may help.

what you all think?

d