Multiple, possibly unrelated issues
Warning, I'm not even a novice at this stuff. I'm sure I will have some parts named wrong.
I have a 93 SE, purchased used with a boatload of miles on it.
It ran great for about 8 months then as soon as the summer weather started I began having problems.
Intermittent sputters that sometimes lead to stalls. No noticeable pattern in when or why. Sometimes right after starting when the car has been sitting for hours, sometimes after a few minutes driving, sometimes after a good while. Uphill, downhill, accelerating, coasting.
Less frequent - Outright stalls with no warning, just shuts off. Usually - but not always, when coasting or slowing without breaking.
Most anytime the car has been driving more than half an hour to 45 minutes after stopping, it will not restart until the engine has cooled down to about 150. The car does not overheat, rarely rising past the 200? mark on the guage.
Things that have been done ( in no particular order and including presumed irrelevant tasks )
oil /filter changes
New muffler and leaks in the pipe welded
spark control module
Rubber splicer for coolant exit from the engine block replaced with metal part. ( sorry, no idea what this is called )
Today I discovered that the IAT ( or what I believe to be the IAT was out of the air filter housing and kinda sitting loose. It looks horribly corroded. Couldn't find the replacement part at a local advanced auto.
I also have new O2 sensor and a thermostat to attempt replacement on, as well as sparkplugs I have yet to do. It doesn't seem to be running rough - but it'* possible I'm just not sensitive enough to the "rough" to tell. It doesn't sound like it'* misfiring.