My gauge never goes up past the middle. But components like the distributor could still be hot, like marginally too hot if the fan clutch was marginal; so I'm not ruling that out at this time. Intermittents are tough !!!In the past I've have issues with vehicles that would die once they got warm. On my old Chevy it was the ignition module inside the distributor and on an Acura it was the same thing but Honda calls it an Igniter.
I'll be driving my '98 with the 2004 MAF sensor 100 miles today, and I'll see if that drives as normal.