HoggerDrew
CP/VIA Rail Modeler
Every now and then, I'll couple my engine and a couple of cars to a standing consist, when all of a sudden my Train Pipe pressure bottoms out from 70 down to -(negative)4 or so. What troubles me is that as soon as I uncouple the string of cars that I just pinned to, the TP pressure jumps back up to 70 and I can move the engine and it's consist again.
What would cause the TP do go into the negative?
What would cause the TP do go into the negative?
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