I've been having a couple trouble codes follow me for several months now but most recently I acquired a whooping 14 check engine codes! I cleared them and drove maybe 2 miles and they all came back.



Recently I have had the battery replaced, both front wheel hubs and ABS sensors. Admittedly I made an error when I installed the ABS sensor and consequently a portion of the cable is damaged leaving the inside wires fully exposed to the elements. No amigos or brake light at the moment though. Engine temps have been average between 190-196. Slight hesitation at start-up last few days. Otherwise no symptoms and no issues with the truck. 148k.

I have a bonus coming up so I want to get this taken care of. I know I need to replace at least one front 02 sensor but I intend on replacing all 4. Thoughts or suggestions would be appreciated.

 

After cross referencing some of the codes using the search function Im going to start with replacing all 4 02 sensors and see if that takes care of the problem. If that dont work next Ill get to work on the battery terminals as mine were loose and the bracket that holds the battery in place was junk so I tossed it. Then Ill have my mechanic check my grounds. Ill keep this posted should anybody else have similar issues and possibly a solution.

 

Do bad 02 sensors cause rough idling?

 

Yes bad o2s can cause rough idle, but it from all those codes it sounds like you have an electrical problem, are all your fuses good? Do you see any frayed or damaged wires in the engine bay?

EDIT: just saw the paragraph under the pic you posted...that might be your issue.

 

my car just had an issue with rough idling and smoke. I changed one 02 sensor (the one that was throwing the codes) and the idling is back to normal and smoke is gone.

 

Check the 15amp Fuse #2 in the fuse block inside the engine bay.

 

Fuse #2 and fuse #5 are both blown. I just replaced the #2 fuse but need to go to the store to get a new 40amp fuse for #5. I looked on the panel and it shows a engine and a fan. So does this mean my fan has not been working this entire time?

 

Alright just got back from the store, replaced fuse #5 and checked the newly replaced fuse #2 and its blown again. I put a second 15amp fuse in #2 but it keeps blowing. Any thoughts?

 

Something on that circuit is shorted causing the fuse to blow. One of the O2 sensors, MAF, CMP, purge control valve...

 

Possibly. I inspected all 4 o2 sensor wires to make sure none were melted, none were.