Re: Bad EGR valve
I think your Ranger has an older EGR system. There is a small switch (DPFE) that controls the valve. Follow the hose from the EGR forward to the left front side of the engine. The DPFE switch is mounted there. It's a black plastic gizmo with some hoses coming from it. It fails more regularly then the EGR valve. Also, check the vacuum tubing from the switch to the valve. The engine heat cooks them, they crack and then they leak.
Texas Desert Rat and Occasional Aviator
2003 Ford Ranger Edge 4-door Supercab. 3.0 V6 auto, 4.10 diff. Airbox mod, factory nerf bars, James Duff traction bars, Extang soft tonneau cover, Line of Fire tailgate lights, bed cargo tiedowns that came out of a Boeing 727, Westin safari bar equipped with no name driving lights and a Remove before Flight streamer on the cigarette lighter.....