Okay, new here. sorry if this is a duplicate post. Family member visiting from out of town with a 92 Stealth ES. Driving down the highway, car overheats, coolant boils over, car slows to a stop won't start. Tows it in to town, new thermostat and coolant. Still won't fire. Question, how do you jump the computer interface to trip the diagnostic codes, and where can I find info on how to read the codes, so I can see what else is going wrong. I have a feeling after the boilover the coils could be shot but don't know and I need to get him back on the road to his folks. Any help would be appreciated.
Thanks

 

to check codes:
http://www.stealth316.com/2-diagcodes91-93.htm