My Pilot started acting up recently - initially it was leaving the radiator fan on after running for a significant amount of time, which I know can be a common thing but not necessarily something to worry about. I replaced the thermostat anyway because one of the other people on this site had fixed that issue by doing the same. It didn't fix it for me, but no big deal, it was only running for four minutes once I shut the car off, so it wasn't likely to drain the battery. A couple or weeks later I had two simultaneous issues with unrelated (I think) systems, the AC and the radiator. AC would come on when I turned the car on then would turn off after a few minutes, then it would turn back on once I got on the freeway; but soon even the freeway wouldn't turn it back on, after the first couple minutes of running (that happened in the middle of Nebraska as we were moving from UT to TN (it was a rough trip). During this trip, the engine temp, which had been settling higher and higher despite no apparent coolant leak began to reach very uncomfortable levels. I checked and added coolant to no effect. I've stopped driving it because it just runs hot now and I need AC here in the South. For the AC I've checked the freon and compressor and both seem to be fine (per pressure and function for the couple of minutes it is working, as well as watching the compressor catch and spin with the hood up). I've also switched around relays in the fuse box to no effect. For the overheating I've just added coolant. Someone mentioned a possible water pump failure and I'm wondering about maybe a clogged radiator. I'm also wondering if the AC and radiator systems could be connected to some part of a faulty electrical system, partly due to the issues occurring simultaneously.