First, may all have a great Thanksgiving, with the little ones helping to run trains.
I have a Lionel 6-28069 Niagara from the Century Club II. It has set in the attic while I worked out of state, until this past week. After taking care of the loose tired driver rims known on these engines, I placed a 9v battery in the tender and, after lubrication, ran it. It runs well in TMCC, smokes good, and responds to all commands, bell, whistle, and horn. However, the chuffing sounds only in reverse, nothing in forward motion.
In fact, after starting in forward, I hear the steam release and other “shutdown” sounds as the engine accelerates forward. So… does anyone have any ideas? I even did the Aux1 - 74 to reset the railsounds, but to no effect.
All assistance of what this could be is very appreciated.