My 07 Mustang GT 153,xxx miles when driving the engine starts right up and idles fine and drives well for first 20-30,. But then after this time driving i start to hear lifter ticking noises and slight lack of power. Coming to stop engine will tick loud and noticeable a loss of power, especially in reverse with a little incline. Yet suddenly the engine loss or power and ticking sound clears up, also can clear by quickly accelerating. No engine code ever sets, Engine is always smooth running...

2007 Mustang GT 4.6L loss of power when warmed up and then clears to normal