there was acutally a recall on this, when they built the car there's a place that didnt have enough scealant and it owuld leak

http://auto.consumerguide.com/auto/u...ex.cfm/id/2049

Water leak: There may be water leaking into the passenger footwell because of insufficient sealer on the seam at the firewall. Look for rust on the floor pan and run water over the right lower corner of the windshield to watch for water leaks before buying the car. (1992-95)

sorry cant find the recall bulletin
they only mention the passenger side here
but both sides can do it