Trouble with her new SC1
 

Hi all new on this forum. My daughters 2002 SC1 runs like a champ for about 45 minutes and then it misfires and is not drivable So far I have changed plugs,wires, coils, gascap coolant temp sensor, bank 1 sensor, catalytic converter, bank 2 sensor fuel filter and crankshaft position sensor, map sensor and cleaned the throttle body to no avail. What am I missing? This car runs great only 58,000 miles no dash warning lights until the misfire them just the rando. Misfire. Let it cool down about 45 minutes and was able to drive it home no problem the car is not overheating but something is shutting it down. I can't figure this thing out, help please I only ave 3 more days before she needs it for school and work.

what does the temp gauge do during the 45 min of ok running?
what is the temp gauge reading when it "goes bad?
What does the car do if you start it and let it sit idling ........................does the fan behind the radiator kick on when the temp gauge gets above the 3/4 mark on the gauge?
If you engage the a/c and turn the fan on, does the a/c and said fan both turn on?