A9 1.9tdi cutting out and start up problem

[Benwillis93]

Hello, I have just bought a 2008 A3 1.9tdi and the battery light is coming up on 1 turn of key and it struggles to start and when it does the engine cuts out at low revs at junctions. Battery was changed this winter and the seller claims nothing like this has happened to him.

Do you have any suggestions please? Many thanks.

 

[ashtec125sp]

check the diesel filter and when it was changed. may also be worth scanning for codes,

do you have contaminated fuel?

 

[Nick-1964]

Is the alternator charging alright? You should expect ~14 volts at the battery with the engine running.