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ConverseNation posted a topic in Maintenance & RepairI don't usually get stumped, so I am assuming this must be out of my skill set. 2002 Ford Taurus 3.0 (U) SES - Replaced the Fuel Pump and Filter (poor pressure), Plugs (Fouled white debris - lean condition), Coil (Misfiring - no CEL or Codes), Battery (shorted cell). It will start, sputter, misfire and run like it is out of time and die. After holding throttle at 1800 rpm for 2 minutes (many misfires, coughs, sputtering and intense fuel smell) the only codes are (Catalytic Converters checked and are empty): P1131 HO2S11 (Heated O2 Right Upstream) not switching correctly, Sensor indicates Lean P1151 HO2S11 (Heated O2 Left Upstream) switch Sensor indicates Lean P1400 DPFE Sensor circuit Low Voltage I haven't had a Taurus not run/idle without codes to indicate a direction to go in that a coil didn't fix. Curious on where to go next (I am familiar with GM, not so much Ford. Have Maxisys Pro Scanner and Snap-On Verus D10 w/ 4 channel lab scope, no subscription to perform most tests). Greatly appreciate any insight, Thanks.