Ok, thanks for the clarification. Sorry if I misunderstood your
Could be a throttle body issue. Drive by wire, where the throttle
does not open and no longer allows air to enter the engine.
A faulty throttle body will usually set a code, and since you don't
have any codes that could be of help, it might not be a throttle
The best time to test / diagnose the vehicle is while it is not
starting. Fuel & ignition can be ruled out quickly at that time.
If your scan tool can communicate with the ECM during the time of
"no-start", then at least you know that the ECM is powered up & working.
Older VW's had ECM relay problems, where the relay would cut out
causing the engine to die. Sometimes the relay would work again
and other times the relay would need to be replaced.
I would have to check a wiring diagram, but I believe your vehicle
does not have an ECM relay. So the above was just an example.
Wednesday, March 7th, 2012 AT 1:01 AM