It looks like you pulled the connector already and no change - it still idles badly. No, pulling this connector will not reset your ECM programming. It will take 10-19 trips for the ECM to adapt to a new MAF.
My E320 is running fine and when I pull the MAF connector my idle hunts between the ranges you are saying. Looks like a bad MAF in your case, or leaking FPR.
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thank you for the tip, will order a new MAF ASAP, will also check the FPR but I suspect it to be fine, since every single other rubber/plastic hose i've looked at has been just fine, this has actually been a year long project... wait even longer then that since I got that car in 2015, it's a VERY long story though, but the very short version of it is that i had to swap the engine cause it was cooked, and when that was done and i wanted to testfire the car well... lets just put it like this, that the ECM is not very happy when both terminals on the battery gives off positive energy, therefore i had to swap the ECM, later had to swap the ETA cause (in retrospect figured out that) an ASR ETA does not run on a non-ASR CC/ISC module, so basically i thought that maybe that's what fried the CC/ISC too however between the ETA & ECM & fresh battery swap and the start of the surging idle, it ran just peachy for about a week
Oh by the way.. have a look at this
if you scroll down to pin #8 and look at the page labeled 1 first it talks about fuel mixture and reseting that
on page 3 it is described how you do it, the question is though, does it still take about 10 trips ?
You cant fix an idle control issue with a fuel mixture that it outa wack becuase that will cause the engine to idle outa wack. No getting around this issue, the MAF has to be fixed or what ever is causing your AFR issues. Then if you still have an issue with the idle go back to the idle control. But the idle control cant control an engine that is too rich or lean, that alone will cause surging.
that is very true, I will fix the MAF, but it's almost starting to feel like the car is cursed or something.