Idle and misfire problem
 

The gaskets on my 3800 lower intake plenum and upper intake were both replaced because they were leaking fluid. Afterwards the car started but made a loud clicking noise. This noise was normal i thought because it has made the noise randomly for quite some time, but after it warmed up it would go away. It ran for a day, but then on the way home, it died in the middle of traffic. It somehow started but made it sound like i had a huge cam in it, and it is apparently misfiring and backfiring through the TB. I have no clue what it is, and weve already taken it apart and put it all back together after it died. Here is the video.

http://www.youtube.com/watch?v=BBPTRSJR_Yo

Also does anyone know what sensor, if it is a sensor is located right above the oil filter.
Help would be much appreciated.

sounds like a stuck exhaust valve. take the valve covers off and see what u find. the oil pressure sensor should be whats at the filter.

Huh.. that might make sense. Do you think it might be a fuel injection problem?
Or far from it>?

no doesnt sound like injector. u would have funky idle but not the poping and clicking.

Anyone else?

clicking noise?
 

a clicking noise after start up before it was warmed up? after an intake leak, could be the engine bearings. was it knocking or ticking, before it died an the intersection?

have u checked under the valve covers to see if any of the valves are stuck/not moveing or lose rocker arms. really sounds like its sucking through the intake and exhaust.