after tune up problem

[rob_shumway2005]

ok, changed plugs and wires, ~(motorcraft), after code said number 3, was a missfire, and now, it ran great for the first ten mins, then very rough idle, then it dies...even dies at the light, plugs and wires are tight....maybe the coil???? anyone had the same problem with the 4.0?

 

[sickwilly]

I suspect a bad plug, loose wire, or maybe you closed the gap on a plug when putting it in. I would go back through each plug.

 

[rob_shumway2005]

i reset the computer, by undoing the batt cables, and now the engine is running just fine, but now i have the od off light flashing...... think its in the computer now....bc the light wasnt doin that before....i dont have a clue, she has a mind of her own....