So many things wrong with my truck

So i get picked up in my truck from school by my brother (His is in the shop)
so he gives me a little slip from Auto Zone and it reads



TROUBLESHOOTING
-Catalyst Efficiency low- bank 1
Explanation
The oxygen sensors monitor the Catalytic Converters ability
to score oxygen
Probable Cause
-Catalytic converter defective
-Engine misfire or running condition
-Large Vacuum leak
-Engine oil leakage into exhaust - valve guide
seals, piston rings




So i guess i have to change out my O2 sensor on bank 1 right?

Quote:

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Originally Posted by parentsyukonnowmine

TROUBLESHOOTING
-Catalyst Efficiency low- bank 1
Explanation
The oxygen sensors monitor the Catalytic Converters ability
to score oxygen
Probable Cause
-Catalytic converter defective
-Engine misfire or running condition
-Large Vacuum leak
-Engine oil leakage into exhaust - valve guide
seals, piston rings




So i guess i have to change out my O2 sensor on bank 1 right?

---

Your catalytic converter is toast (most likely), cut them out and get the rear o2 sensors shut off in a tune, the front o2 sensors are what monitor the A/F ratio, rears just keep tabs on the cats.

ima just try to change bank1 and see if that'll shut it up if not
ima do that and hit up Flaco for a tune

Don't waste your money. I have never seen another cause for 420 or 430 than a bad cat. Do not replace an O2 in hopes of fixing this. Get the cats gutted and the tune adjusted to ignore the rears or put new cats from GM on there. Aftermarket cats will cause these codes eventually too.

gut the cats,get tuned

damn but its a lot of cash i dont have right now
dude game me a print out of the whole cat im guessing its the y pipe it includes the 2 cats
its
MAREMONT
Converter-Catalytie
Retail:359.99
5 yr warranty

then a tune wit flaco is another $250
thats almost $700
Still in High School ppl im broke

I've got a y-pipe with the cats gutted but still intact, if that makes sense, that I'd sell you. But if you need cats for emissions, it wouldn't help. Plus, it's off my 04 and don't know if it would be the same as yours. Just thought I'd offer though.

what happen was back acouple years ago when me and a buddy replaced the transmission we striped two bolts on the driver side exhaust. were the header and the cats meet.so i think only one is tight. willl that cause the truck to throw the codes?

how much we talkin bout?

Quote:

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Originally Posted by GasGuzzler

Don't waste your money. I have never seen another cause for 420 or 430 than a bad cat. Do not replace an O2 in hopes of fixing this. Get the cats gutted and the tune adjusted to ignore the rears or put new cats from GM on there. Aftermarket cats will cause these codes eventually too.

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X2, only a cat problem triggers this code, never an O2.

damn do the cats usually go out at 120,000 miles?
nice truk aklowrider

120000 miles there probably due.

Just have the rear O2 sensor turned off. The code will go away and drop the y pipe cut the cats open, gut them and weld them back up and you are done. It should cast any more than a 100 if you can't weld it back up plus the cost of a tune.

i cant stand the sound a gutted cat put out, i would just eliminate the cats with a piece of muffler pipe.

ok so i got a question
no to sound like a lil b**** but i dont want the sound of no cats on my truk
my bro eliminated his n ii dont like it
i have my stock muffler will it sound all that bad?

itll sound fine.... dont be :ghey:....jk

i'll prob get to it 2morrow