My pump went out on me last summer. It was making an audible noise as I drove and the cars power was decreasing noticably over the last hour of the fuel pumps life. The pump had probably 375,000 miles on it. I got a used one for $30 and NOT the new one for $190.

I think that if you have wierd niose coming from your tank, I'd be just about sure the pump is bad. Too bad you spent all that money on that other stuff (half of which was testable before you replaced it anyways).