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So for the last month or so I have been noticing some distinct hesitation/ shuddering while accelerating under light to moderate throttle. It has gradually gotten worse to the point where you can feel the jeep slightly shaking during these hesitations. For the first time yesterday I had a CEL and Electronic Throttle Control light come on. I pulled over, shut off the vehical, restarted and the Electronic Throttle Control light was gone immediately and the CEL went out after I had stopped and shut the jeep down while fueling up later that evening. The Jeep still has the same shuddering under acceleration but no lights are currently on the dash (who knows when they will light back up).

Any Ideas what this could be? Ive read a wide variety of opinions on different forums, but have been leaning towards the EGR being gummed up? Also any opinions on fixes? Would I be able to get rid of this with an ECU Tune?

Thanks in advance for any input!
 
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