truck ran fine before I shut it off
 

So I finally fixed all my motor issues and the truck ran like a dream. I drove it for about a half hour when I realized my icp sensor was loose and spraying oil everywhere. So I unplugged the sensor to tighten it anf it was too dam hot ariubd there to reconnect it. So I left it inplugged and drove for about 10 minutes. Shut it off for about a half hour and now its running like trash. Its got a violent shake to it. It almost seems like half the injectors arnt firing. Its running just horible.what couldve happpened. Just before this happened I redid the right bank standpipes and dummy plugs. Im lost. Im going to check all my connections to see if something came loose but im lost.

The only code im getting is #5 injector