Re: Software for fault-finding re; Explorer '97
You'd have to take it to a Ford shop, which I can imagine will be few and far between hat are familiar with the Explorer vehicles. An ODB scanner can show fault codes and such, and reset the engine light, they run a couple hundred dollars or I'd say about 100-125pounds unless you have to buy one and import it, then it'll be a bit more of course.
As for adjusting the idle, I'm not sure if you'd be able to do that without getting a custom tune to recalibrate the PCM (computer module). That, can be costly.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!