hey guys,
i put my air system back on so i could pass emissions with my LT's and everythign was fine, and recently i've been hearing a lot of valve flutter from the driver side check valve. so i guess the valve is busted, and i've left it on. a couple of days i got a lean code bank 1, could the busted valve be causing this?

 

bump!

 

Yea, it's like an exhaust leak and can bring air into the exhaust system in front of the O2's and give them a false lean reading due to too much air in the exhaust.

 

alright, im going to go take it off now. i cant stand that damn rattle anyway. its going to throw the code for the pump but i'd rather have that then have the car running rich.