I am out of town for the first time in months and of course this would be the first time that the car acts up. Since I feel completely helpless 8hrs away from home, I'm really just looking for things to check when I get back.

Car:
'92 240 LH2.4 300k mi

Problem:
This car has occasionally had a little bit of a misfire/rough running problem when it snows (and ONLY when it snows). I have not yet been able to find the issue, but since it only rarely caused a problem, I didn't try all that hard.

The other day (after a snow) it displayed the same behavior- it started but stalled, then it started and ran, but seemed like two cylinders were mia. Before I left I let it dry out and took it around town once. All cylinders were firing, but it high idled and was down on power. It also threw the CEL with codes 231, 232, and 113 (I had unplugged the O2 sensor at one point). I might have also gotten a 221, but I can't remember now.

Checked:
Not much since I had to leave town. I unplugged the AMM and the car stalled. I unplugged the O2 sensor (because a wiring issue in my last LH2.4 240 causes a similar problem) and there was little change. Fluids are fine, fuses are fine.

After a few days of being away I had my wife start it again just to make sure nothing changed. Nothing did.

Does anyone have an idea of a good place to start looking? What really confuses me is the snow part, though I suppose it could be unrelated. It seems VERY similar to the usual problem though- just worse.

Thanks all.