OK, I have to add something here
Might be a long shot, but this happened to me.
I had a 92
Drove it 1000+ miles home when I picked it up.
Nice sunny drive, ran with the A/C on all the way.
Well a common problem with the A/C on older cars, is the drain hole in the bottom of the vents under the center console (under the radio and such) gets plugged. (usually from pieces of the foam that is used to get a good seal around opening and closing the vents).
Anyway, when this hole gets plugged, the water accumulates in that little tray.
Now add in some stop and go, and the water sloshes around. Often spilling out mainly onto the passenger floor and carpet area.
It also spills out and runs ontop of the SRS module that is mounted to the frame of the car, under the radio.
This SRS module/circuit board is mounted in a aluminum housing, but not sealed.
In my case water actually filled that aluminum housing to the point it shorted out the ckt board. Damaged the solder joints from the circuit board to the connector.
Its a pain to get in there and get that module out, but if you can, its worth checking out.
I just pulled the thing apart, used a desoldering station to remove the connector off the circuit board, cleaned up the area, and soldered it right back on. Re-installed everything, and all was fine.
Sorry, didn't take any pictures at the time. Know now I should have.
If this turns out to be the problem, and you can do it yourself, or get someone other than the dealer to run though this, you'll save a couple grand!!!
A dealer would remove and replace = couple grand. :-(
Brad