Is closed loop always stoichisometric…? I thought open loop commanded fueling sets the target points for closed loop. Is that wrong?
The reason I’m asking is because my wideband shows that my engine is running 0.99 - 1.01 lambda in all conditions, except before closed loop begins, and also in PE mode (where it’s 0.80 lambda, as expected).
Maybe I’ve overlooked something? Just trying to understand how everything works together now before I start turning things off.
(‘98 Trans Am)