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Q: ruff running engine at acceleration or sustained rpm on 2002 Ford Explorer Sport Trac

this week as i drove my ford died when i accelerated from a stop light. I re fired the engine and found that i could feather the accelerator peddle and finally come up to speed, but had to continue to feather the peddle lightly to maintain 45 mph. i have changed the air filter and what appears to be the in frame fuel filter. Now if i attempt to reveve the engine the rpm ossolates from 1000 to 2500 up and down with the peddle on the floor. Any fixes?
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You probably have a Check Engine Light on. You need to retrieve that code and have it properly interpreted to begin to determine what is wrong. It sounds like something pretty substantial is malfunctioning.
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