Ok, this has really got me, I have ran VAG-COM but no errors, replaced battery, check i have a spark on all plugs, fuel is going in, but car just turns on starter and makes no effort to ignite.
does anyone know if the car runs or starts, albiet rough, if you disconnect the Air flow sensor?
I can vag-com the ecu, no errors, does this mean the ecu is ok, or should i suspect this still? are there any immobiliser issues known on the a4's?
the car is a 98 a4 1.8T