Hey all, my 08 5.4 3valve is starting to act up. Power is not a problem. When parking or going in reverse to park slowly, the engine sounds as if it wants to die? It acts like its bogging down. Could it be the fuel pump? Anyone else have this prob and fix it? I also think it may be the IAC valve. Any help would be appreciated. Thanks

 

I would try cleaning throttle body and MAF sensor.

 

^^^x2