[iwhelan]

Hello, I have an 87 911 that has been running perfectly fine. Plugs, rotors, and cap are a couple of years old and wires are one year old. This Spring I haven't driven it a whole lot, but did a couple hour trip a couple weeks ago with no problem and yesterday it was fine driving about an hour to my destination.

Later in the day it was very rainy on the way home but driving in town from where I was, the car was driving fine. I got on the highway and it was driving perfectly until about 30 mins later I got off the highway and it would stumble or miss at low RPM and then maybe somewhere above 2k it would smooth out. If I kept my foot light on the throttle it was a bit less rough. We made it home but even idling was a bit rough once I made it to my driveway.

The next day everything was fine.

I'm guessing it has to do with water getting into something, and it is probably hard to diagnose, but is there something common to look for that tends to happen on these cars in the rain? Thanks.