Perplexing issues -1999 CL 2.3l
A couple of perplexing issues with the CL...car has 264k on it. It's been a real trooper. But recently 2 things started happening that I can't figure out...
1. The car is overheating sometimes. One of the electric cooling fans isn't working, but I don't think that's the reason, and here's why. I can drive the car for about a week or so and it will never overheat. But then I'll see the temp gauge start to climb. Then I see that it needs coolant, so I'll add some. No more overheating, until next week. The coolant doesn't seem to be going into the oil, or out of the exhaust.
Additionally, I can drive it down the highway for about an hour before it starts to run hot again. Same fix: add coolant, good for another hour on the highway, or another week, whichever comes first. I don't see any coolant leaks, either. Any ideas?
2. The car has very recently developed a misfire, but only immediately after start-up. I believe this is closed-loop, right? It will run on 2 cylinders for a few minutes, and then bit by bit, starts running perfectly fine again, but the check engine light is blinking by this time. I checked the codes and it showed the predictable misfire codes, and then a 740 (torque converter) also. Trans seems to be it's usual crappy self, but I don't understand the temporary misfire. Any clues here?