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Hey guys, I just installed a set of headers on my 2005 5.3 silverado. They went in great and everything, but I have a few engine DTC's now and I can't figure out what is wrong. The DTC's are: system too lean. O2 sensor (bank1, Sensor 1) low voltage. and Multiple cylinder misfires. I changed the plugs and the wires. But I still get the codes. I clear them out with my laptop, and it even idles rough when the codes come on. I need some advice.
with thwe low voltage bank 1 sen 1 tell me its a bad 02sen. did u put the sen back in the same spot when u took them out
Ya everything is hooked up right, i'm no ameteur.
Did you put loctite or anything similar on anything when tightening it back up?
just throwing this out there, but has it been tuned for the headers yet?
Are the plug wires OK? Some headers can burn them causing it to misfire. You need a tune if you don't have one already, My headers caused all sorts of problems also.
try replacing all the spark plugs, they get cracked so easily and cause tremendous issues when cracked. NGK TR55's a about $1.50 each.
Ya I figured I had to get it tuned, I did change the plugs and wires and used loctite(temp. specific for engine blocks). I was going to tune it anyway. Now I have a good reason!
You don't NEED a tune. I would say that there is either a bad 02, or a leak somewhere.
Even a bad o2 shouldn't cause misfires. It would cause lack of power or terrible mileage, but truck should go into preset tables from factory (i had one out for a week, and it was slow, but drove fine)
Ya ive tried different O2 sensors, that wasn't it. I should try bunching out my cats, if thoughs are clogged up enough it would restrict the flow. What do you guys think? haha Sounds likely...
Not to change the direction of this thread but how exactly do you tune for headers? Add more fuel and ign timing?Quote:
Originally Posted by zebra
You don't tune the headers them self, by getting a custom tune done by say Nelson Performance (indorsements please) they can tune your computer to what mods your running, in turn this would adjust the fuel and air.
if the header were coated they may have fouled the o2 sensor
You mean you used loctite on the header bolts and NOT the plugs right? You probably already know this but spark plugs ground through the threads and anything but antiseize would probably affect it.Quote:
Originally Posted by kyle.p12
Correct. I used it on the header bolts, which believe it or not they haven't leaked yet. theres nothing worse than the sound of a leaking block.
ya know i was throwing those same sorta codes, I'm embarrassing myself by telling you this, But all it was, was that my air intake was loose. tightened her up and had autozone erase the codes and its worked great ever since.
I'm writing this to give those who hav the same problems and can't figure whats wrong.
I changed my O2 sensor that was showing low voltage (according to my programmer). And now I have no problems, the codes are gone and I'm finally noticing the potential in my headers!
Glad you got it figured out ya big ol' queer :ghey:
:spit:Quote:
Originally Posted by bartjo06
i kept breaking my tr6s apparently they go in finger tight.....insert perverted comment.