Seriously. I'm hoping so much that I can avoid dropping $120 on a new MAF and $174 on a new IACV. I'd rather be spending money on finishing my suspension buildup and tools.

From your description, it doesn't sound like a MAF sensor. Usually that wouldn't cause a problem on startup only.

I know a few guys that have used the cheap MAF from Ebay or Amazon $28-$35.
Even if just to check.

According to some reading, "additive injector adaptive fueling" is done at idle. Multiplication is done at all engine speeds.

This makes sense as the codes only pup up at idle.

What I don't understand is whether Fuel trim and injector adaptive fueling are the same thing or correlated. For instance, a negative fuel trim means that the computer is pulling fuel to adjust for a rich condition. So by these definitions, does "rich limit exceeded" mean that the computer has told the injectors to shorten their pulse widths as much as it possibly can bit the o2's are still reporting a rich condition? Or that the computer has cranked the injectors on to the max, and as a result has over compensated and caused the rich condition?


​​​​​is short term fuel trim the same thing as additive injector adaptation? Two names for the same data?