P0133 code

[Ill_Born_SS]

Simply swap the front O2 sensors from side to side and see if it changes sides. Also if there is a leak at the throttle body then you have an inaccurate tune to start with. (lean which would be a slow response)

[RamMan86]

^ Thanks I cant believe I didn't think of that. I will give that a shot and see what happens. If it turns out to be just the o2 sensor, which is only 3 months old, is there a better brand that I can use. Ive heard of people using Corvette o2s for whatever reason.

[Mike_Levy]

What brand are you using? Bosch or NGK are the best out there. I believe NGK is who makes the stock Mopar ones.

[RamMan86]

honestly im not sure. my dealership replaced them all when they could not figure out why the light kept coming back on. even after replacing them all. it wasn't until I got my CMR tune that the light stayed off for about 2 and a half months. but now it keeps coming back once or twice a week.

[notso]

Simply swap the front O2 sensors from side to side and see if it changes sides. Also if there is a leak at the throttle body then you have an inaccurate tune to start with. (lean which would be a slow response)

I installed BBK shorty headers myself (which I shouldn't of done cause i'm an idiot and I have only jack stands), anyways I had to get what I did fixed (used the bbk gaskets instead of new stock ones) so i saved myself no money.

now, I run 94 octane gas, i got that same code. 02 sensor bank 1 slow. had the 93 tune with 5% fuel across the board, So I "downgraded" to the 91 tune (added 1% fuel across all) got the code, went to the dealer and got the 02 sensor replaced (under warranty thanks to my buddy working there ) And damnit all, it's back. Been on the stock tune now since....Sunday(?), I'm sure when I drive home today that damn code will rear it's head. And I hate being on the stock non modified tune.

I got to reading that headers will lean out your a/f by 5-10%, and that these tunes are on the safe side of lean to begin with, could that just be my issue?

I do have an a/f gauge that I have sitting in a box waiting for me to get the balls to install also a cervini ram air kit (even more lean than my current CAI).

What's a safe fuel add? Too much fuel will foul your plugs or burn your cats out no?

[mikel]

O2 harness resting on the headers?

[notso]

O2 harness resting on the headers?

i have no way of seeing. i'll have to find out I guess once i can get time and put her in the air.

[RamMan86]

my p0133 turned out to be a leak in the headers where they run parallel. Got it fixed and for the first time I threw a p0153. Also ever since I got my CMR tune when I come to a stop my rpms start to drop like normal but fall just below 500 and jump back up quickly. This is pretty annoying especially if I am resting light on the brake and can actually feel it jump forward a little. I was thinking of switching it back to the factory tune to see if it still does it.

[mikel]

my p0133 turned out to be a leak in the headers where they run parallel. Got it fixed and for the first time I threw a p0153. Also ever since I got my CMR tune when I come to a stop my rpms start to drop like normal but fall just below 500 and jump back up quickly. This is pretty annoying especially if I am resting light on the brake and can actually feel it jump forward a little. I was thinking of switching it back to the factory tune to see if it still does it.

Id suggest letting your tuner know about that