Scan interpetation Help

[welded]

Hi

Can someone take a look at my scan data to determine why I am getting a O2 sensor low voltage in both banks???

454Engine.txt

454Engine.txt

454Engine.txt

454Engine.txt

[welded]

The scan is the text file.

[gmtech4]

we have no idea what the normal parameters are ,,,,,check fuel pressure ,intake manifold gaskets ,vacum leaks ,cats ?,02 sensors? etc etc

 

no codes so idk what else to tell ya

[welded]

ok gotcha.

I have a 454 with a throttle body and my scan tool says I have Pending low voltage on both O2 sensors(Bank1 sensor and Bank2). New sensors(GM) did no good. So...

1.) I replaced all the vacuum hoses and determined no intake leaks by spraying carb fluid on the intake manifold.

2.) I cleaned the Mass-Air-Flow sensor.

3.)The Fuel pressure was reading 46psig so I replaced the fuel filter and it is at 56 when the key is turned and 50psig running. Is 50 psi sufficient?

 

I was hoping a tech could determine from my scans if the O2 sensor voltages are ok now. I think they have improved but I don't know if the values I recorded are now acceptable.

Thanks for your help.

welded