WL Statesman 5.7L issues

[iIIJayIIi]

Have replaced
RELATED TO SPEEDO Replaced
*VSS
*THROTTLE BODYY
Checked for bad earth (could have missed one but all seem to be fine)
RELATED TO FUEL GUAGE Replaced
*Fuel pump
*Fuel Filter
Also went to put same but serviced injectors in., Car ran 10x rougher don’t know if was a bad injector or the fact it’s been tuned by previous owner and they’ve changed the flow pattern
-Mafless tune //Does still run oxygen sensor (not to sure if that helps but any help would be appreciated TIA

 

[VFSV6FORME]

Is your car like this .

https://forums.justcommodores.com.au/threads/wk-ls1-ecu-repair.302701/

 

[krusing]

Were the parts new or S/H ?

Speedo may need to be adjusted to the correct PPK,
Fuel gauge needs to be recalibrated possibly !

Vac leak ?

 

[iIIJayIIi]

Make sense with the Speedo an fuel
Needing to be just recalibrated also been told I’d need a tech 2 scanned to do the fuel guage is that true Or top end scanned/tuner should be able to do it ? And vac leak I can’t seem to find? done the old soapy water challenge but nothing change through idle any chance there’s a spot known for it or just try replace the gaskets on manifold and all lines also what would cause it to go in limp mode as randomly every month or so it’ll just go in limp mode and the idle will fluctuate hell bad ? And (VFSV6FORME) could be related but it’s never actually cut out or stalled so not really exactly the same as that other forum, ( fuel pump & filter brand new everything else second hand) but came out of ls1’s that ran right w no problems at first the throttle body wasn’t opening at all so replaced w second hand one and starting running properly (I think ) didn’t check the voltage on throttle body so maybe could be all leading back to ecu on why it’s going in limp mode or would air leak Speedo and fuel uncalibrated be causing the limp mode plus noticed the oxygen sensor are out sorry if reply seems all over the place just trying to give everything that’s happing just don’t wanna go wasting money at shop without having some semi knowledge of what may be going on

 

[Jeda]

. , .

 

[lout]

has somebody pulled the needles off to modify the cluster

 

[iIIJayIIi]

Not that I know of ?