Posted by Jeff Swanson on December 1, 2007 
Might have something to do with that huge fuel tank, perhaps?
Posted by K100DS on December 1, 2007 
KCS tried them, and sent them back in favor of old GE Dash 8's. That really says something about the SD90MAC...
Posted by Marc Hamon on December 3, 2007 
Yeah it sucks!
Posted by on December 7, 2007 
According yo EMD techs that I heard second hand from a C.M.O. the 90MAC suffers from software problems and excessive engine vibrations. I feel too much power myself!
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