I am currently expericing mulitple issues with my 2002 E46 (Sedan). The main issue is at times when I start my car my idle has become a bit rough. When I mean rough that it would idle up and down between 500-700 RPMs, sometimes this doesn't happen it would start up good and drive well. Also...

Whenever it rains, for some reason the floors of my backseat get soaking wet. The carpet and the floor mats. This past two weeks it rained nonstop, and now all of carpets are wet. I thought it wasn't a big deal, but now when I turn on my car, my electrics don't work. I can drive, but nothing on...