DarkAzNite

iTrader: (2)

Folks. I am really needing some help. I don't know what to do. I have been having these problems for almost a year. See my earlier posts for more details

https://ls1tech.com/forums/pcm-diagnostics-tuning/522654-really-need-help-misfire-more.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/434055-holy-codes-batman-please-help.html
https://ls1tech.com/forums/fueling-injection/412504-running-lean-discovered-dyno.html

I recently had 2 new carsound cats installed since I ran out of ideas and have now just started replacing ****! I replaced both front O2 sensors already, changed fuel filter, new fuel pump, replaced wires and plugs, Have removed Predator Tune and still getting these codes, What is the easiest way to check coil packs, check for bad injectors, I am now getting 12 codes
P0135, P0155, P0401, P0420 Bank 1, P0430 Bank 2, P0440, P0442, P0446, P0530, P1441, P1539, P1546, and P0300
I am so frustrated and now broke from this car. Please anyone help. I am at a loss for what to do.
Any help will be great. Thanks

TAQuickness

iTrader: (28)

I didn't look up all your codes, but in regards to easy... swap them from bank to bank to see if the problem follows. If the problem is on both sides, you could try swapping hardware with a buddy. scoggin dicky is a good place to pick up new replacement parts for cheap --->

DarkAzNite

iTrader: (2)

Thanks for the reply TAQuickness, Problem is I don't have any LS1 buddies that live in Austin Texas. I am pretty much on my own other than the forum.
I have a list of things I am going to experiment with this weekend. Hopefully it is just a vacuum leak for the AIR and EGR codes.

ZL1Killa

iTrader: (17)

its gotta ben some vaccuum line somewhere or something. with all those codes dealing with the cat, EGR, and insufficient stuff. otherwise i'm baffled as hell

wrencher

iTrader: (2)

That is nothing a little tuning will fix most of those.
P0401, is the EGR still there?
P0420/430 seen way to many high flow cats throw inefficency codes delete them w/ in the tune.
P0440 large evap leak, 442 small leak 446 vent solenoid.
P1441 evap flow during non purge??
Any vaccuum lines diconnected? Gas tank mods? Check the fuses?
P0530, A/C pressure switch, is the switch connected? Damaged? System full s/b about a volt output from it key on engine off.
You need to view the data steam on this thing, is it normal. Pull up some freeze frames of these codes(moment the codes where set to look at pids) & see if they are normal also.
Have you checked the basic wiring to the PCM powers & grounds?
Car modded? Half sounds like you need a tune the other half of the codes sounds like they need to be diagnosed.

ZL1Killa

iTrader: (17)

^^ i'm with him, at least on the EGR, cat crap for deleting

others troubleshottin'

DarkAzNite

iTrader: (2)

First of all, thank you all for the help and ideas.
I am thinking there is some type of vacuum leak, I also get quite a bit of surging and stalling when the AC is on. I only have a predator tune with the LS1 Hotcam, free mods, almost everything else motor wise is stock. EGR is still present, I attempted to run on a dyno in the beginning of the year and was running extremely lean and could never figure out why, was 15:1 at 4800 rpm, thought it was a fuel problem, replaced fuel pump and filter, no leaks at the tank, or rail, I replaced the cam position sensor about a year ago maybe there is some line that has kinked, or worked its way free. I wish I had EFI or autotap and knew what I was doing so I could monitor the freeze frames etc. Wouldn't tuning out cats cause emissions testing issues. I had to remove the PCM about a month ago to run a power wire for an amp, but if you see my previous posts way before this I had 8 codes similar. Fuses, what fuses should I check? Solenoids, which ones.