on my 94 a4 Z...i noticeda couple days ago that the service engine light was on...and i noticed that when i was goin like 10-15 mph..id accelerate slowly..and it would kind of sputter or hesistate a little bit and then acclerate normaly..waht do u think it might be..fuel injectors? the light hasnt been on sence..any suggestions appriciated...thanks...