Hi everyone!! I'm new here and I need a little help. My 99 Ranger XLT 3.0L V6 started shaking last Saturday. It first would only do it if I restarted him after being off less than a few hours. It progressively got worse, started shaking a little more as I accelerated from stop. I took it to the mechanic where I was told I needed my spark plugs and wires changed along with a fuel system tune-up (not sure what that consists of). Got my spark plugs and wires changed yesterday by a friend (He crossed 5 and 6 which I had to fix this morning) went and got an oil change and fuel filter replaced and he's still shaking. What could be the problem and how can I fix it? Thanks in advance for all of your help!!