Autoquip

Hi toby, thanks for the reply, i certainly will let you know if i find anything. cheers, Davie

Spartacus I had thought about that fuel pump but couldn’t work out why it would cut the fuel for a split second. I think it would have to stop for a period of time before the engine would notice it due to the high pressure pump. However definitely worth checking out.

Hi toby, did you get a solution to your fault? Sorry to dig up an old post

Hi did you resolve your issue? I have the same kind of problem with my 2.0tdi ultra. However I’ve had no dpf light or engine management light and no fault codes either.

Hi thanks for the reply, embarrassing as it is I run my own garage! I understand about the different diagnostic equipment, I am using an up to date Autel maxysis ms909 which I use on a daily basis at my garage. The only other time I have had an issue with no fault codes was a VW Amarok, crank non start with no fault codes and it turned out to be a faulty cam sensor, however I picked that up reasonably quickly as it had no reading on live data when cranking the engine. I am still recording live data whenever I drive it, when I get to the bottom of it I will post here with what I find

Good afternoon, I am new to the forum so apologies if this is posted in the wrong section. I have an A6 avant 2.0tdi ultra with the CNHA engine and manual transmission. I have an intermittent issue which is hard to explain but I will do my best to explain what is happening. On occasion when pulling away from a junction it’s like it cuts the fuel off for a split second and then goes back to normal again, it can do this either pulling away from a junction or driving through the town at 20mph or even cruising at 50mph. It doesn’t seem to have any pattern to it and I can’t “make” it happen. Sometimes it can do it once then be ok for a few days and then do it again, it doesn’t do it every time I drive it. I’d say it seems to be when I am feathering the throttle. I have scanned for codes and there are no trouble codes present, I have tried recording live data for various sensors but I can’t seem to find any discrepancy in the readings. To be honest I wish it would just breakdown at the roadside then it’d be easier to fault find. I have been chasing this fault for about 3 months now and I really am stumped. I don’t want to light the parts cannon as I rather diagnose faults before I replace parts but I am struggling with this one. any help appreciated regards Davie