Trouble with the curve

What radius curve?

https://ogrforum.com/...2#144452851098731762 0-36 FastTrack. Imperial engines can run on 0-31

What else is happening besides the stall?  Is power completely lost because of a short?  Does the smoke stop; do the lights go off; does the whistle work?  Do the same events happen on any other curves on your layout?

Reporting a "stall" isn't enough help for the investigators here.  Oh, and also, the investigators always like to know the product number for the particular engine.

Chuck

On the piece of track that's giving you problems, make sure the center rail pin at both ends is making good electrical contact with the adjoining track sections.  If it is, then check both outside rails for good electrical connection.

https://ogrforum.com/...6#144452851100536876 The engine shorts at the curve. No smoke, or lights other than the tender. Sounds to me like a loose wire.  I might have to take the top off and check some connections.

It’s not a track problem. 

What is the MTH product number?  Is it PS3?

Ya it’s a ps3 Imperial Gs4 #4435. I realized that it only happens when it turns left 

Looks like the MTH product number is 30-1618-1.

If the wires on the cab to the wireless drawbar plug are tight, they may be tugging on the connection and causing contact with one or more pins to break.  If the loco came with a longer drawbar, you might want to try the longer bar and see if that helps.

I uncovered it and found that if I zip tied the wiring on the left side, it in turn would have a steady connection.  I also accidentally broke the headlight bulb while I was at it lol. I soldered that back on. The engine runs perfect now. thanks MTH warranty service for doing absolutely nothing to it, and allowing me to solve it myself.