JimF - Yes, I think you are right, as stevebfl kindly explained it is adding 22% more fuel. It seems from the archive search they can also fail the other direction. Nice site with lots of useful info btw.

stevebfl - Hi stevebfl, btw, thanks for that ac system diagnostic article you linked here to the forums, it helped me diagnose the faulty sensors the dealer was diagnosing as a busted evaporator!

I hope I am understanding you correctly...as I understand, 1.22 is high, but not high enough to trigger the fault. the upper limit is at 1.32 and exceeding this value is when an "adaptation value limit reached" fault will occur.

1.22 reading was at idle...so at higher rpm/load the adaptation value goes up to beyond 1.32 and thus triggering the adaptation limit fault? which would explain the misfires - lean mixture at high rpm/load as computer has reached the limit to compensate?

Additionally you are saying that at idle the 1.22 is too rich and thus explaining the -.6m/s compensation to lean out the mixture? I'll have to check if the .6 I got is a negative or positive value.

I don't get the last part though. It should be 1.00 with a new AMM as you say, unless you are saying these are the cases when a new AMM still causes enrichment because the fuel trim was not adjusted back to 1.00 either via the diagnostic computer or no self-adaptation has occured because the conditions for self - adaptation were not met?

ASaltyDog - crap, I hope not! What other codes or checks can I do to verify the ignition controller's condition?

Yes, from how I undersrtand it is adding fuel to the tune of 22% above the baseline. 1.00 is baseline and diagnostics read 1.22.