Only runs correct when no MAF is plugged in?!

[fishhouse4]

Ok new update for today:

While researching “resetting intermediate levers”, I came across some other N62 owners with similar rough idle and hesitation issues. Several of them mentioned that they unplugged their VANOS solenoids and saw much improvement.

I figured it couldn’t hurt...quick and easy. Noticed a couple of the outsides of the solenoids were caked in oil residue and dirt. When unplugged I could see that the inside of the connections were coated on wet oil.

So I left all 4 vanos unplugged AND plugged back in the MAF. It runs!! Stumbled for a brief second at start but quickly smooths out. Idles great. Took it for one quick test drive and it ran awesome - no hesitation at all!

Sooo I think I might be on to something. Could have been the bad VANOS connection all along?!

I replaced all the VANOS last year. Must have not seated one correctly or have a bad o-ring. Going to clean the connections and retest. I can swap back in the old ones if necessary as well.

Stay tuned...fingers crossed!!