10 Things in Your Late Model Car You Didn't Know You Could Fix.

The complexity of modern vehicles makes some projects a no-go for newbies, veteran Portsmouth, R.I., mechanic Paul Roderick says. Don't try to replace fuel or water pumps (because of their inaccessibility) or the shoes in drum brakes (because of their mechanical intricacy) unless you really know what you're doing, and "forget about electrical problems, unless the problem is a blown fuse." But, Roderick says, there are still plenty of auto DIY projects, like these, for weekend warriors.