I have to wait a few minutes while a tire is airing up on the 12 volt pump. The good news is that I just checked my fridge and it is on after 150 miles of driving. It has been going out even at low speeds since I pulled and reinstalled it about three weeks ago. The fix was to tweak the flat metal plate under the flue vent (and trapped by it over the flue pipe) so that it was perfectly parallel to the face of the flue vent. Perfectly. As in to the 32nd of an inch. 

Jim