Ticking,Clicking,Pinging (Not Sure) Under Load

[irok40s]

You can hear a slight tick/click when I rev it at idle, When i'm riding through town it sounds really bad bouncing off buildings, etc. No visible Exhaust Leaks, No oil leaks, No visible leaks anywhere... Check Engine Light Is Throwing P0455 "Large", and P0133- Upstream Heated o2 Sensor Slow Response Bank 1....

The Sound Is Barely audible at idle, and can be heard inside the truck when accelerating through town, etc... Please Help, If I need to post more specific videos or pictures let me know, and I Will!!!

Here's A Video Of the click/tick/ping at idle when revved

http://www.youtube.com/watch?v=xfbuW-OwGiE

 

[jremington59]

I really couldn't hear anything, but with the miles and the 5.0 I'm guessing a cracked exhaust manifold on the passenger side. Very common with these engines. The P0455 is an evap leak in the fuel system. Could be as simple as a new gas cap needed. The P0133 is a bad O2 sensor. Easy fix. The cracked exhaust manifold could actually throw this code.