having o2 sensor probelms...bad placement on STD manifold?
 

So i just finished my setup on my d15b7. It contains a STD manifold with adapter plate, TD04L (wrx), walbro 255 hp, 12:1 fmu, 3" exhaust. I keep getting cel code 1, i replaced the O2 sensor and cleared the ECU and after drivngn for a little while it pops up again. I am wondering if the sensor is getting too hot in the stock location on the STD manifold. Has anyone had any trouble with this before? Also any other ideas are welcome. Thanks!

Re: having o2 sensor probelms...bad placement on STD manifold?
 

It's generally not suggested to run an O2 sensor there. It gets way too hot for it. The EGT's on my car can get upwards of 1500 degrees, well above what is probably suggested on an O2 sensor. I would plug that hole with an old O2 sensor, and mount one down farther.

Re: having o2 sensor probelms...bad placement on STD manifold?
 

Cool....thats just what i wanted to hear. Now i gotta fix a bigger problem....main pully wobbled loose at 55 mph :o >:(

Re: having o2 sensor probelms...bad placement on STD manifold?
 

i ran mine there for 8 months on the hack w/ no probs. it's still there, but closed loop disabled w/ uber for over a year.

Re: having o2 sensor probelms...bad placement on STD manifold?
 

Any one know where i can get a 18m X 1.5 bolt to plug it? I'd rather not stick an old O2 sensor in there.

Re: having o2 sensor probelms...bad placement on STD manifold?
 

Maybe your getting a O2 CEL because the 12:1 FMU is increasing the fuel too much, and causing the O2 to read over it's limit. It's just an idea. My O2 is on the manifold and it's fine after a few years.

Re: having o2 sensor probelms...bad placement on STD manifold?
 

Re: having o2 sensor probelms...bad placement on STD manifold?
 

geez $8....hmmm...maybe i'll hack up an old sensor and weld a bolt head to it...