Ok, I'll assume that the floor is plywood in my 1994 as well. I think I will go ahead and either buy or rent a small shampooer Thank you for your replies.

From what I've read on the net the problem is the floorboards. I don't know what sort of flooring the 190's have but the danger is getting the wood wet and having mold or warping to deal with. Do you folks have any knowledge on this?

I have a 1994 B190 and in the past have spot cleaned the carpet. I am considering renting or buy a carpet shampooer to do the job, any suggestions?