P0340. & P0102. both codes still on after replacement of MAF and Crankcase Position Sensor

Question

Truck idels fine, stalls out as we aply gas. Causes some backfire. Bogs down under load.

Answer 1

P0102 MAF (mass airflow) sensor fault

P0340 Camshaft sensor fault / valve timing error

If the vehicle idle fine and bogs down under load, this lean more of a cam sensor fault. faulty MAF result in lean idle condition and bog down under load but will not cause a P0340. P0340 will cause a bog down at load and back fire with the MAF setting a code due to the backfire.The cam position sensor is located behind the main pulley, it usually get confused with the canksensoralso check to make sure its not the pulley that is at fault