I don't buy it either because it is air resonating in the tube to the IAC. if you do the TH fix or change the length of the tube the car will not moose. And if you note the Ford fix involves replacing this said tube to the IAC for one of a different configuration.
the moose is also due to conditions outside. My 99 would moose alittle when starting on cold mornings. My fathers 95 would moose way back, it was stock and still is stock, but he had to replace the IAC
