I'm in a pickle and need some suggestions for my '07 5.3 Tahoe.
TLDR: I need a way to disable the AFM that doesn't involve the OBDII dongle, mailing off the ECM, or doing a full mechanical delete, and cost is a major factor...
The full story:
I have SMOG coming up in 2 months. I've been running an AFM OBDII disable dongle since it cost me an engine at 200k. Last time I went through SMOG I discovered that in order to disable the AFM through external command, the dongle basically constantly erases the OBDII codes that popup as a result. That puts the ECM in a state where it is not "ready" for SMOG.
Because of this, since all they do in AZ is confirm the OBDII is "ready" and has no active fault codes, I have to remove the dongle, run through the initialization drive proceedure, then after SMOG, put the dongle back on. Simple enough, right? Nope. LOL.
A couple months ago, in a moment of desperation after my 3rd mesh filter on the oil pressure sender in a very short period, with a good ol' lack of executive function at play, I pulled the stupid mesh out and left it out.
So I am now in a position where if the AFM were to engage, I can almost guarantee the lifter(s) will jam closed, which means the "normal" SMOG proceedure will cost me a top end.
So I need a way to disable the AFM without the dongle.
Things that are unfortunately NOT an option due to financial reasons, available time, and this being our only vehicle, include: full mechanical delete of the AFM system, sending the ECM out to have it disabled off site, or fancy tuners upwards of $500 or more.
I have tried searching Google and this forum, but my eyes keep glassing over with all the contradictory info and folks who have their favorite method (usually mailing in the ECM or doing the full mechanical delete) and simply will not allow other options to be discussed.
So, bearing all that in mind, with the non-starters disclosed up front, what options do I have to kill the AFM?