Over the last month or so I have had a check engine light on. I have no mechanical problems with the car and no performance issues. IT just came on all of a sudden. I tested the code and it pulled up Emissions EVAP. I have done no modification to the exhaust before the cat and my o2 sensors should be fine. I realize that converting to OBD 1 can solve this problem but then my ecu wont read at testing and I think it will cost less to find the problem and fix it. Can anyone help me trouble shoot before I go spend big bucks at the dealership?

THANKS

 

bump i gots the same problem or i think i have code 91