Help codes p0171 and p0172 Fuel Trim Malfunction

[v8carnut]

Check engine light came on. I pulled the codes and get p0171 and p0172 Fuel Trim Malfunction. It starts and runs rough at idle and misses at about 1200 RPM. Any ideas??

 

[87AODGT]

p0171 is system lean and 0172 is system too rich, maybe a set of 02 sensors that are shot and sending the computer bad signals

 

[v8carnut]

The codes are kinda vague I’ll change the o2’s I’m sure they could use it anyway. Thanks!

 

[v8carnut]

OK I’m stupid I found the culprit , frick’n vacuum line… plugged it back in and she’s running sweat again.. and I dnd’t spend any money either.. Yee Haa