I agree with the general consensus, dirty track, pickups or wheels. Even new locos can have crud on the wheels, and new track can have manufacturing grunge on it too.
Another possibility is a loose connection, or poor solder joint.
Rotor
Jake: How often does the train go by? Elwood: So often you won't even notice ...
I have tried resetting the decoder to its factory values as the TCS sheet says to no avail, the track is new and the loco is the same as i bought it a while ago with the intention of fitting it up for dcc as between laying more track for the layout i have a set up for programming and testing locos, the dcc unit is new also and has tested / programmed other locos with no problems.
Could it be a faulty decoder and would it be worth purchasing a decoder tester for future installation testing them before fitting.
Dirty and corroded wheels; dirty track. Clean the wheels and track and see if that helps it along. Is the headlight flickering? That's a sure sign of dirty wheels and track.
N scale?
If so, those little guys are know for sometimes less than ideal pickup from the rails. Make sure the pickup strips on the loco are still there, clean, and contacting the contacts from the trucks.
Jeff But it's a dry heat!
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