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I have a 2001 f250 7.3 auto. 202,000 miles. Driving at over 2000 rpm it runs perfect. If I try to maintain any rpm below that, say 1700, while holding at that speed it will drop 300-400 rpm and then in 2 seconds recover. This happens 2-3 times per minute. all gears. On 2 occasions while decelerating it has lost all throttle response, but returns in 5-10 seconds. Has new tps, new ford cam sensor, air and fuel filters. On snap on scanner passes all tests and has no codes. Have pulled drivers valve cover looking for burnt wires or loose connections....nothing. Truck has always been over maintained and looks new. I use it to work and tow a 8000 trailer about 500 miles per week. Fuel economy has also dropped in the last year from about 14 to about 10. Please Help!!!
 
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