need a starting point on Uncles 2005 4.7...it throws p0031 p0037 p0051 p0057...surely cant be all 4 o2 sensors at once

 

Check fuse 24. (Just a shot here.)

 

need a starting point on Uncles 2005 4.7...it throws p0031 p0037 p0051 p0057...surely cant be all 4 o2 sensors at once

 

i would start by looking at your catalytic convertor, one maybe plugged

 

try running a can of seafoam through the intake. i prefer the aerosol one through the throttle body, some prefer the liquid using a vacuum line.

either one will help clean the top of the valves, the top of the pistons and if clogged will help clean the catalytic converters. worked wonders for me when i was getting misfires and ended up clogging one of my cats.

 

thanks guys found the issue, traced it to wiring harness issue ...chafed wiring was culprit

 

thanks guys traced issue to so chafed wires in the harness

 

Merged duplicate threads and closed since a solution was found.