Hi everyone,

So here is the story with my problem...it's a '01 Camaro 3.8 manual trans

My catalytic converter was taken out because it got clogged and I just put on a pipe there and I had an O2 sim for the sensor that is after the catalytic converter, probably about 7 years ago. Afterwards, I decided to put on Pacesetter headers...I replaced the stock headers and had no problems whatsoever, no codes or anything, O2s worked fine...

Recently, I bought a new muffler, a Walker QuietFlowSS and put that on the car, and I also decided to buy a new Walker catalytic converter to put on the car. In the meantime before all of that, I had gotten a code P0134 I believe it was, so I also bought a new Bosch sensor for the driver's side manifold sensor. I replaced that sensor, installed the new catalytic converter and hooked the sensor back up to its wires, removing the O2 sim from the post catalytic sensor.

After that, I am getting 3 codes now, a P0137, P1133 and P1153. Also, I noticed that I was getting this sort of a stumble when the car would get warm and I would put it into first gear to get going. That was when I had the code P0134 for that driver's side manifold O2 sensor.

What could be the problem? I replaced everything and I thought my issues would be fixed but they still exist. I checked online and some people are saying that P1133 and P1153 come on after putting on Pacesetter headers but I did not have them before when I put the headers on and that was maybe 3-4 years ago. I can also smell fuel from the exhaust and I am getting really bad fuel economy.

 

By the way, no exhaust leaks whatsoever from where the y pipe starts all the way to the exhaust tips. Everything has been taken down and welded really well and put back up and checked. I am suggesting a leak at the header gaskets though...I am hearing some kind of ticking noises there..