need some help guys

Mr.Soup

complete modular newb
Established Member
Joined
Jul 29, 2009
Messages
121
Location
troy missouri
Took my O1 cobra to the track a month ago for the first time. Mph was pretty low so I brought her home. A while back I installed a catch can system, I discovered it was clogged up pressurizing my crank case so all of my spark plug tunnels were full of oil.
This past weekend I replaced all my plugs, installed new pcv valves, I had a K&N filter on the end of my mass air meter but relocated it to inside my fender well, Yanked off my iac restrictor plate and swapped my slp lm1 catback for a Mac.
I took her for a drive yesterday and it seems to accelerate well but cruising at a steady speed it has a stumble to it. My check engine light came on. I ran to oreillys and pulled codes p1O7O and p1O74 banks 1 and 2 lean.
Came home with a can of mass air cleaner, cleaned it and checked for vacuum leaks, there are none.
Does anyone have a suggestion as to what should be checked next?
 

01yellercobra

AKA slo984now
Established Member
Joined
Oct 5, 2005
Messages
21,125
Location
Cali
It's rare that both sensors go bad. Usually if there's codes for both banks it's a vacuum leak or MAF issue. Double check around the MAF for leaks. Someone on here had issues with the adapter flange not being the same size and causing a leak.
 

Mr.Soup

complete modular newb
Established Member
Joined
Jul 29, 2009
Messages
121
Location
troy missouri
I'm wondering if I roached my O2 sensors, when yanking my old plugs all the oil that v was in the channels ran into the cylinders. When I started it up she smoked like crazy for 5 minutes.
 

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