Well, it was raining exteremely heavy that day, heavier then i can ever remember, and the water was almost up to the doors. But the whole time the car was parked, i only drove it in the afternoon after the rain stopped, and there was no more water on the street. Drove for 2 miles, parked for 15 minutes, came back and it wouldnt start. So i doubt if it was water.

But about 3 days before the incident, I started the car, and even though it started, it was hesitating and shaking. after 2 retries it went back to normal.