TQW as parts truck/weird idle oscillation

[Steve Jensen]

I volunteer with our church every year to help the less fortunate by
painting houses, re-roofing houses, building wheelchair ramps, etc.  This
year I coordinated things, so for three days I was the project manager and
parts gofer, from 5 gallon paint buckets, to metal drip edge, to 4x4's and
concrete.  The TQW filled the bill nicely, and with 120+ kids we got 17
projects done in three days, including 2 roofs and 11 houses painted.  Yes,
I'm real proud of those kids.

However, at one of the sites one of the kids recognized the TQW as all wheel
drive, so pulling out of the driveway of the project, I kind of, well, I put
my foot in it harder than I have in a long time.  She responded with a roar
(boost went to 1.6) but soon thereafter the idle got funky.

Where the idle was a rock solid 900 rpms before, it now oscillates between
1200 and 1400 at about 1 hertz.  Real weird.  My gut says I blew the end
caps off the intercooler on the 1-2 shift (it wasn't strapped), but I would
think the idle would stay steady if that were the case.  Mich man hose
replaced 1 month ago, codes pulled, showing 4444, haven't looked at the IC
yet since 3 days with 120 kids just about killed me. . .

Any pointers?  The Bentley is going to work with me tomorrow.

-Steve Jensen
87 5kcstq
87 5kcstqw