Help please??

[Parolaccia]

I have the Pacific Flyer train with the EZ Track and the controller that comes with it. My father in law recently gave us his old McKinley Explorer HO set that has a GP40 diesel engine. When I put this engine on the tracks it moves about 1/4 inch and freezes. Does this type of engine require different tracks or controller? Or would it be something with the engine itself causing it not to work? TIA

[JonJet]

Certainly more info is needed...

Define "freeze" would be a good place to start

Do the wheels still turn?
Does the lighting work?
Do the wheels look dirty?