2004 dodge ram 4.7 getting p0068 code. Already changed map-tps-crankshaft pos. sensor and camshaft pos sensor. Obd2 says tp 11.3%-load value 68.2%-map 74kpa - ignition timing aadvance is negative 6.6 deg. Truck starts but idles rough with a knocking sound and stalls. Strong gas smell from exhaust. Can anyone help?
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