Hey yall, i got a 1998 suburban 5.7 vortec 180000 miles only had it a couple of weeks now but im having a problem with it after its warmed up (i believe). Ill upload a video of what it sounds like and some of the data from my cheap scanner. But a bout a week ago i was driving and floored the gas pedal on the way to work, well i got to work and war idling and it starts to feellike its missing on a cylinder and then gets really rough but at this point wasn't stalling but it did have a hard time starting after i shut it off for a min.. I've got new spark plugs new ignition coil new distributor cap and rotor . in the midst of that i broke a line coming off the pcv valve hose. I replaced that also. Before i replaced that line a got a code saying bank 1 and 2 lean. I ignored that until i replaced the line. Then went to go clear the code and i see a new code. ( cam position p0341) . i replaced the sensor with a delphi sensor and had the code come back up. So i went with ac delco now. I checked fuel pressure and it was 50 keyon engine off and the same when engine is running then I also replaced the fuel filter which was clogged pretty bad hard to blow through which now i sit at about 53 psi for fuel pressure. No code again yet but then my truck had the same problem again with idling and it stalled as well.
any thoughts?
Fuel pump maybe ?
something else?
please help

 

Welcome to the forum. Does it have a MAF sensor somewhere in the air intake before the filter? If it does, they can become dirty (coked) and cause problems.

 

Video video

 

it does, i took a peek at it and it look horrible but it did / does have a residue on the screen and tiny little sensors.

 

The screen is to protect the sensor which can be a bare wire that is heated. As the air flow cools the wire, the computer knows how much air is going in and uses that info to inject the proper amount of fuel in.
I've read on other forums that the wire can be carefully cleaned w/ carb cleaner. If your sensors are different, that should still work.