I have been battling with the oxygen sensors on our 99 Accent for over a year now. Replaced one, was told other needed replacement. Replaced that and was told first one was fried. Was driving me nuts since gas milage was getting worse as was pick up. So after 4 trips to the mechanic I was told by the "new" mechanic(not my choice of people to have working on my vehicle) that the problem is that Hyundai's need GENUINE Hyundai parts for repair and one can not use generic parts like oxygen sensors for both bank 1 and bank 2.
If this is the case then WHY do they sell these parts for use in Hyundai's? Or is my gut feeling right on this and the slug is scamming me and my family?