i have an 2002 A6 1.9tdi 130
im having a problem i cant seem to get to the bottom of
whats happening is when i start it from cold it dies and stops again this happens several times then eventually it starts but you have to hold it at 1400rpm ( while at this rev its hunting ) do this for about 4 minutes then it idles fine .
I changed the fuel filter ,
then ran a diagnostic where errors for the air mass / map sensor came up i run actual values and these were both reading out of spec so i changed them ( also was loosing power and black smoking so these made sence as errors ),
I left the car till the following morning and no difference at all
just wondering if any one has had or no what should i do next as im running out of hair to pull out
thanks in advance