HELP!!

I have a 98 4runner limited and I am having the exact same hesitation you are talking about. I can rev the engine from the engine compartment and there is almost a sec delay before the engine revs. Also there are times during acceleration the engine runs smooth and then sometimes it sputters. I am receiving trouble codes P-100(MAF sensor error circuit) P-110(IAT sensor error circuit) and some random cylinder misfire codes. The cylinder misfire codes are most likely to be caused by the MAF or IAT malfunctioning. I have changed and checked all wires and sparkplugs. Since the error codes say sensor circuit there is most likely just a bad wire somewhere???? I bought a MAF from a salvage yard(pick a part) and that did not solve the problem. Those bastards are expensive. Any Advice????