The original poster mentioned the van cutting out on a bumpy road. That sounds to me like a loose connection, With the most likely culprit being the connection to the AFM, though admittedly it could be any of a number of electrical connections.

Karl Wolz
Sent from my electronic umbilicus

> On Jun 16, 2015, at 12:02 PM, Rocket J Squirrel <camping.elliott@GMAIL.COM> wrote:
> 
> solve my van's famous "it cuts out repeatedly for a few seconds every
> minute or so when driving up very steep grades for a long period of time