Suggestion:
Get the parts together - plan a long day in the garage...
new cat, plenum gaskek, new plugs- easier to change than clean. Then clear the codes and see if codes reapear and how vehicle performs (MPG).
Do NOT assume what the codes are.... not correcting a cel would keep you from knowing any NEW codes.
SWAG: the cat failed because of a fuel problem - likely the intermittant cel was the clue we need.
If the cat actually grenaded and wasn't just clogged, all the chunks could now be living in your muffler and blocking it up too. Would give the same effect on mileage as the cat being plugged.
It turns out it was just a completely ****ed front O2 sensor, it was causing the truck to run super rich thus fowling my plugs and giving me horrible milage
The cat is removed now, it was completly ****ed, the reason the o2 sensor was ruined was because the guy who removed the cat welded the o2 sensor in for some reason (which I'm sure fried it)
The cat is removed now, it was completly ****ed, the reason the o2 sensor was ruined was because the guy who removed the cat welded the o2 sensor in for some reason (which I'm sure fried it)
welded in the sensor, or welded in the bung for the sensor ?
its normal to weld in the bung.
um, not normal to weld in the sensor itself.
its also normal that an 02 sensor fails after getting knocked around during cat surgery.
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01 1500 Reg Cab 4wd 5.2 auto 3.55 285/75/16 nasta step bar tow hook sc3815 180 3923 trans cooler/filter posi-lok powertrax noslip timbren brite-box pioneer head rockford amp/speaker cobra cb firestick hughes plenum water pump timing chain oil pump rear seal front bearings brakes shocks cracked dash towing composting boat.