So I got in my 2001 Escape V6 today and while I was driving away, it would run at about 2,000 RPMs, the violently shift down to 1,000. It did this twice and never again. I stopped once and shut off my car and it started with no problem. When I get ready to leave, it wont start at all. It cranks and sounds just like it is going to start but never does. I can hear the fuel pump when I turn the key, so I know its not that (besides the fact that I changed it about 2 months ago). Could it be a bad starter or spark plugs?