I have a 1998 contour with a 2.5 v6 DOHC and I just went to autozone and they told me P171 was mass air flow sensor and P1131 was Oxygen Sensor.What I need to know is this right or what I need to do to get rid of the CEL. The car runs good but sometimes rough idol. Any help would be great.


98 Contour se 73 Bradley GT www.cardomain.com/id/zmud1