N62 valvetronic servo question

[gaffinfool]

I posted this last night in an old thread, because my issues are exactly as described here:

http://www.xoutpost.com/bmw-sav-foru...lue-smoke.html

I could not solve my issue like he did, as all of my sensors are plugged in.

05 X5 4.4


I made the mistake of not releasing the "tension" on the valvetronic servo when I removed it, and it popped out when I removed the 4 bolts. When I reinstalled it at the end of the job, I installed the servo by just screwing it back (turning the whole motor, not allen keying the shaft) into the VC until the surfaces met, the servo orientation was correct, so I screwed it down, and finished it up.

Hop in, did the key on, off, on, and fired it up. Idle is smooth, and in PARK, I can pretty much redline it and there are no issues - great throttle response, no extended high RPM's on the way back down - so I'm headed around the block for the first drive. Back it out, drop it in DRIVE, ease on the gas and now we're movin! High fives all around!!!

Ego kicks in because I have conquered this PITA job and I step on it, and the truck goes to bucking and hesitating. I also discovered I could drive it in manual, and as long as I keep the RPM's above 2k, I can't necessarily mash the gas to accelerate to pass, or go up a steep hill in higher gears, but I can get enough power out of it to run 70 down the highway with essentially no issues. But, I want to be able to mash the gas....

I did a LOT of research on the "go-go-gadget smokescreen" (I LOVE that term!) before deciding that this issue has ABSOLUTELY NOTHING TO DO WITH VALVE SEALS (my vacuum leak was actually the upper timing chain cover / driver's side). I understand the workings of the VVT setup, and how it replaces the throttle body to control how much air enters the cylinders.

My current issue feels like a carb with a full choke. If I feather the pedal, I can get the engine to "come back". And, because of this feeling, and what I understand about the VVT, I'm wondering if I just need to remove and reinstall the servo, and try to set it correctly. It makes sense in my mind that the computer recognizes the request for acceleration, pumps more gas into the cylinders, and sends the signal to open the valves more for more air, but maybe because of how I installed the servo, it's just not able to open them up as much as it should be able to.


I found the instructions on pelican on the servo removal and install. I'm going to try reinstalling it, but I guess I'm asking, are there any other adjustments I need to make, other than unscrewing/screwing the servo shaft? I saw something in my searches where someone was talking about having to spin the gear on the eccentric shaft, and hold it, along with the servo while installing it. It wasn't on the N62, but for as much of a gearhead as I am, I'm still learning about this beautiful, over-engineered tank. Maybe I'm barking up the wrong tree, and I should be looking elsewhere. I have tried to troubleshoot, but the only step I have taken so far is to unplug the newly replaced eccentric shaft sensor I so eloquently shattered when I was removing the VC, as I am really hoping I don't have to pull the VC off again. The issue remained.


TL;DR

If the valvetronic servo popped out when removing it during VCG job, are there extra steps above and beyond just screwing/unscrewing the servo shaft?