Is It Worth Replacing High-Mileage Injectors?

[Fless]

Upstream O2 voltage should be between 0.1 and 0.9 volts. Is that the PID that you're describing?

 

[Mudsport96]

I have off and on felt like this truck has some fueling issues as sometimes the power will go in and out as I am coasting in a low-load situation, and sometimes it will lightly bog in near-idle situations.

I took power going in and out at low load to be similar to surging.

 

[Mudsport96]

Upstream O2 voltage should be between 0.1 and 0.9 volts. Is that the PID that you're describing?

He is reading Lambda. Perfect ratio is 1.00, and he is seeing .95 to 1.05 at cruise.
Squeeler what are you getting when it seems to bog off idle?