ford f150 missing upon acceleration -

1999 FORD F-150
160,000 MILES
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HYACINTH
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have replaced plugs, plug wires, coil pack, and o2 sensor. have also disconnected battery to reset. no check engine light ever lit; 2 analyzers never gave any defective codes, 1 said "bad #2 o2 sensor, but replacement did not help. only misses when warm, misses worst from 43-53 mph, but misses when idling as well. have also checked fuel pump.
Apr 6, 2012 at 8:15 PM
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FIXITMR
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what motor?
Apr 6, 2012 at 8:37 PM
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HYACINTH
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A Triton 4.6 V8. Also replaced #2 sensor on #2 bank; scope showed no voltage at all.
Apr 7, 2012 at 9:48 PM
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