Vinny1

Hey guys. I installed a set of Pace setters on my 02 Trans am and now I'm throwing a PO153 code saying the back 2 sensor 1 slow responce. Well I replaced the O2 with one of the leftover sensors from the conversion to LTs. After a couple days the code came back. While I was sitting at the drive through yesterday my eyes started burning and I realized that it was the car running rich. Is this normal? Why am I still throwing this code (that went out but I'm sure will come back)?

Vinny


Oh yeah I have a Diablo sport programmer for the car

thewholefnshow1

iTrader: (2)

You need a tune, the hell with the programmer. Did you put the pre-cat 02 sensor back in the pre-cat 02 slot? You didn't plug the post cat 02 sensor in the pre cat plug? Right? An did you you use 02 sims or delete the rear 02's?

BIG BILL 2000 Z

tune should take care of the running rich problem. are you running an ory or catted?

redbird555

iTrader: (14)

Headers will make you run a little rich and they will smell if you dont have cats. However I dont think it should trigger an o2 code especially since some people dont get tunes or wait until other mods are done.

DarkJuggalo

iTrader: (6)

i would personally take it to someone and have it tuned, no sense in keep replacing o2's and a diablo tuner is a half *** cop out of a tune... no offense

RevGTO

iTrader: (12)

Tune or no tune, it's difficult getting O2's to work right with LT's - a hit or miss proposition. There's nothing wrong with using a post-cat sensor in the pre-cat position. Search the PCM & Diagnostics forum and you'll find lots of threads and information.

00Silv4.8

iTrader: (10)

if you put a post cat sensor in a pre cat bung thats still connected to the rear position... ITS STILL GONNA THROW A CODE.

leave the front O2s... there shouldnt even be a post cat bung since you did an LT swap? and delete the rears from the Tune. The fronts will still read right in the aspect of tuning, its preferred to use a wideband but they'll do.

redbird555

iTrader: (14)

So even if the fronts are throwing the p0133 and p0153 codes theyre still working in the tuning fuel/air aspect of the car theyre just a little slower to react?

RevGTO

iTrader: (12)

Right. Obviously you have to disconnect the post-cat sensor to the pre-cat harness. The point to swapping them is to test if the sensor is bad or if the problem lies elsewhere.

jomomma

iTrader: (39)

you will want to install the vette o2`s up front to stop you from getting codes. right around 03 the z06 vettes had longer tube manifolds and they ran hotter 02`s to copensate for it. and the wiring is longer, so you can kill two birds with one stone! i put these on my 2000 t/a and the codes went away. with long tubes it takes a hotter o2 to get an accurate reading because of the increased volume of the header pipes.

texas99Z28

Hey 00silv4.8! I thought I was the only one who loves the show Trailer Park Boys! Bubbles is da man!

96monsta

I would just get the sencors tuned out, specially if ur running no cats. Easiest way to go

redbird555

iTrader: (14)

He's talking about the front sensors that cant be tuned out. P0153 means the sensor isnt getting hot enough most likely due to the lt's position of the oxygen sensor. The sensor should still be working its switching is just sluggish causing the code. I think most tuners just turn off the 153 and 133 codes as theres not much that can be doone to correct them. The corvette o2's are hit and miss, they have the SAME heaters as the fbody ones with baffling on the sensoor is just different. see here https://ls1tech.com/forums/pcm-diagn...n-sensors.html

tom falco

I think you mean BANK 2 sensor 1 which is the front O2. The O2 is switching slowly the headers will not effect that at all. I have done many long tube instillations in my shop and all we do is lengthen the leads. Long tubes will not richen up the mixture. The O2 pre cat sensors adjust the mixture. Your sensors are slow to respond change them out with new ones and you will be good to go.

Ls1guy98

yes in fact it will b/c the o2 being positioned so far down from the stock location they are not staying as hot which will make the slow to respond, this exact same thing happened to me, i fixed it by using new GM sensors get new ones and do not use bosch sensors only for very few people do the boschs work otherwise their crap trust me i learned the hard way.