Re: 1999 Ford ranger wont turn over
Need to fill in some gaps here.
Has the check engine light gone out?
If not - if you replaced the EGR valve, check the DPFE switch for the EGR. There's a rubber vacuum hose on the valve, follow it to the front of the engine and you'll find a plastic switch. This fails more often than the EGR valve will, Check the hose also..the heat deteriorates them and they crack and leak. The ports under the EGR valve can coke up from the exhaust residue and cause the same problem. Either of those will set the CEL and cause the rough idle. A bad O2 sensor will do the same.
Have you confirmed you have an ignition problem?
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.....