Going to work this morning (25 miles) it was raining hard enough that I was switching between high and low wipers the entire trip. I got to within 500 feet of work and the car quit. I had a new O2 sensor and a complete tune-up last week and the idle was set pretty low, so I thought with the wet weather maybe it was enough to get something (plug wires, distrib.) wet and bog the car down. It started right back up but the wipers were inop. This afternoon I started the car at work and the wipers were back on. Drove home with the delay wipers on with no problem. Fuse is good (#2, 16amp) and the wiper motor was warm from use but nothing too warm there. Some slight corrosion on the 4 prong plug at the motor and that's cleaned up. Relay going bad and would that be enough to shut the car down? Would a relay reset its self once it cooled down? Where is the damn thing??
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Brian L., '90 244 175K, '01 S40 7K

While the damp and the corroded terminal might be responsible for the inoperative wipers at mid-day, I don't think they're the cause of the engine dying. That's more likely a result of too-low idle, combined with the extra alternator drag from wipers and lights (rainy day...lights on?) all conspiring as you slowed down to draw the engine speed down just a bit too low for the "oops, rpms are too low, must add a little gas" function of the FI to catch it.

That it cranked correctly shows that the battery and alternator seem to be working. That it
*started* shows that the rest of the ignition system is OK.

Check your grounds and fuses for corrosion, as well as blade fuse under hood for LH system.