Hey, new Audi owner here. Having issues with my 1.9tdi sportback. Engine cutting out when coming to a stop, very rough ride when driving and sometimes going into ‘limp mode’ with coil light flashing. Changed crank shaft sensor as this is what was showing on the diagnostic. Same code still showing after change. 

Been advised to change reluctor ring. Has anyone had any experience with this? TIA

Hello Kay,

Apologies, but I cannot help you directly with this, but the cynical view on diagnostics is that it sometimes (regularly?) does not differentiate between causes and effects, and often shows the fault to be component x, but x is in fact not at fault, but is receiving a ‘wrong signal’ from component y. 

Obviously, this can result in changing the apparent faulty component but not sorting the issue, and so spending ‘unwisely’.  It then becomes a matter of experience and (expensive) trial and error to home in on the actual offending component. 

Sometimes it’s cheaper in the long run to get such things sorted at specialist who will have access to replacement parts which can be tried if necessary. For diesels, I always favour a trusted local diesel specialist ( ask for recommendations from your local taxi drivers). 

Sorry this isn’t positive, but it might save you money in the long run.

Kind regards,

Gareth.

Kay.

I share Gareth's cynicism regarding electronic diagnosis. All too often I have seen such diagnoses on this forum that bore no relation to reality.