Big Bertha is vibrating really hard & drinking gas like its kool-aid. She is also running extremely loud & hard. Just got a tune up about 4-5 months ago, so it can't be the plugs, can it? My check engine light was on so I took it to AutoZone to get the a read out of the problem. The code came back as EGR circulationi problem. So i called Ford about it & they told me that I only needed it cleaned. So I cleaned it myself cause Ford wanted $210 to do it. That didn't change anything. The light was still on. The truck is still vibrating hard. So I decided to buy a new EGR valve. Put that on & reset the computer. 20 minutes of running & the dummy light popped on again. What could the problem be. Could the scanner be picking up the wrong code? I think it is the O2 sensors. I am over 150K miles. Please help me & Big Bertha get back to rolling!