How Fix 03 Tracker 2.0L has both MAF Low & High Input ETC Low Input, Knock High

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car ran perfect -Started bucking like it was missing on 2 of 4 cylinders. MAF DTC So I cleaned MAF. Run perfect again for about 100 miles & Repeated the Bucking, Replaced the MAF, MAP, Knock, ECT, OX, sensors & Sparkplugs and 03 Tracker 2.0L 4X4 AT & it still has both MAF Low & High Input-DTC, ETC Low Input, Knock High input, & undefined DTC's WTF Help Monitor all sensors & MAF stays at 239.4 and I can unplug it with no change but, when I remove MAF from in take Tube with it plugged in - 239.4 reduces slightly & engine Stops. Also, EGR is always at 0.0 Thanks