More Check Engine Lights
Situation: In response to a check engine light (P0174) and diagnosis, I've replaced MFS (Mass Flow Sensor) and Oxygen Sensors.
The next step is to fix an ignition misfire condition
OR there is a fuel injector problem.
The Question: How difficult are these to fix DIY and how expensive are these to get fixed at the shop?
2000 Mountaineer 2x4 cyl