crazzydan

Well im From North Carolina and there pretty tight on Emmessions. I drive a 2001 4.2 v6 and im struggling with my o2 sensors and it keeps throwing lean on bank one and 2 codes. Last year i replaced my DPFE sensor and the egr valve.

I was wondering if there is a way to bypass the sensors so the computer thinks there running fine because the sensors are expensive and ive tried cleaning them and replacing them but i cant seem to fix the problem.

Any Ideas

sharkbait

Thats not something you need to bypass. That means your trucks running lean.

Check for vacum leaks first off. Then try running some injector cleaner through it.

crazzydan

Where would i look for a vacum leak at?