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okay so i have read a couple other post on here regarding this issue but mine seems to be a little different. 07 XLT Scrw 4x4 just rolled 100k miles. at 1000-1200 rpms at 45-50mph while in overdrive, when slowly increasing speed the truck begins to shutter,Bump, etc. once i get over 50mph or so it goes away with no further issues. no codes are thrown, no indications from exhaust. Ive read about a possible misfire or even a sensor E-clip in the trans. anybody seen the same thing? thanks for your help
Definitely sounds like a misfire... If you can give the truck a little extra gas to not experience this "shutter", then its a misfire... I bought my truck with a misfire "cheaply" and it was doing the exact same thing.... Hopefully you will get a code to check that will point you to the affected cylinder. Mine turned out to be a coil, and an exposed coil wire was arching on the valve cover. It is what killed the coil (COP)