Need help!!!!!! I swapped my 4.7 ( ran hot and fried) for a used engine I ordered. I know it has to be a 16 tooth and came from an 01 Durango. Swapped the throttle body and motor mounts. Everything else was plug and play. Truck started and drove into shop before swap. Now with new engine I have no spark and no fuel. Swapped crank position sensor and no change. When I turn the key on it takes several seconds before the check engine light comes on. Never noticed that delay before. Any ideas?