I am working on a friends car, she is complaining of it not running right. So i checked codes and it has multiple misfire codes and O2 sensor codes for too lean and too rich? I dont really know anything bout fords, i was a volvo mechanic for a couple of years. The car has 96000 miles and she bought it used and has never replaced the plugs or wires. She had the timing belt done a few months ago she believes. And i dont remember the exact code numbers it set but those are the descriptions that i remember. If anyone can help me i would appreciate it cause i was gonna replace the plugs and wires tonight and see if that fixes it but i dont wanna waste my time if i should look else where.