run hot

run hot (third-person singular simple present runs hot, present participle running hot, simple past ran hot, past participle run hot)

1. (of an electrical or mechanical system) To produce excessive heat while operating.
   • 1943 March and April, “Notes and News: Locomotive Notes”, in Railway Magazine, page 120:

     No. 5964, Patriot, made a brief appearance, but had an addiction to running hot, and was soon returned to the Western Division.

   • 2007 September 25, Bungie, Halo 3, spoken by Avery Johnson (David Scully), Microsoft Game Studios, Xbox 360, level/area: The Storm:

     Chief, that gun’s been firing non-stop; it’s gotta be running hot!

2. (of a bus following a regular schedule) To run ahead of schedule.
   • 1996, Rolland D. King, Bus Occupant Safety, Transportation Research Board, →ISBN, p. 55, Appendix H: Compromises Made by Operators to Maintain Schedules:

     8. Running hot

   • 2010, Robin Hong, Singing Bus Driver, Xlibris Corporation, →ISBN, page 22:

     You are eight minutes ahead of time, and some passengers will miss your bus if you run hot.

   • 2011, Andre Carrington, Driving a Bus in New York City, Xlibris Corporation, →ISBN, page 97:

     She was constantly out sick, lazy, or lame and also she was always running hot and not maintaining or operating her bus on time.

   • For more quotations using this term, see Citations:run hot.

• Thunor