[selshahE92]

Hey folks having some minor issues I\'m trying to work through. So got my car 07 335. It had been sitting for months. I did oil change checked all fluids car only has 37k miles. I then went fbo and procede. Well after the first couple days it got misfires. So I replaced all the plugs. Still had issues in cyl 1 and 3 so replaced coil packs. Now I get lambda codes for the 02 precat 11325. I was told might have to do with 02\'s not sitting properly so I went back and checked them they were fine. One other thing when I went to install the downpipes I forgot what 02 went where. I mean I know which ones for the front and which ones were rears but not which ones were right and left. So don\'t know if that has anything to do with it. Now I\'m basically getting the fluttering then service engine light run code it\'s 11325 lambda and the occasional 10720 fuel mixture. Any ideas on what it might be? Thanks

[Tzu]

Uhmm....IIRC, the front O2 sensor was a gray cable and the rear was black on my 2007. Someone else confirm this.

Otherwise, probably an O2 sensor on the fritz.

[selshahE92]

Originally Posted by Tzu

Uhmm....IIRC, the front O2 sensor was a gray cable and the rear was black on my 2007. Someone else confirm this.

Otherwise, probably an O2 sensor on the fritz.

Yea I can't figure it out. I'll double
Check and then beat option to just replace to 02. Thanks

[zsapphire7]

mine is black front and grey rear. But another thing to check is, these cars are very sensitive to exhaust gasket leaks at the downpipes to catback. The stock gaskets are pretty beat up over time and tend to crumble. If u get periodic lambda on and off then it maybe that.

[selshahE92]

Originally Posted by zsapphire7

mine is black front and grey rear. But another thing to check is, these cars are very sensitive to exhaust gasket leaks at the downpipes to catback. The stock gaskets are pretty beat up over time and tend to crumble. If u get periodic lambda on and off then it maybe that.

I replaced those gaskets and there only a few days old. I know I didn't cross up front and back 02's but I might have mixed up the two front 02's meaning right and left. Any idea how I can check to see if they are installed on the right down pipe. Thanks!

[Tzu]

ZSapphire is probably correct. I was going by memory. But one wire is a different color. Those gaskets are post sensors, dont see how they would affect anything other than noise.

Not sure what you mean by left/right vs front/back. Its either bank 1 or bank 2.