run hot

Verb

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

1. To produce excessive heat while operating.
   • No. 5964, Patriot, made a brief appearance, but had an addiction to running hot, and was soon returned to the Western Division.1943 March and April, “Notes and News: Locomotive Notes”, in Railway Magazine, page 120
   • It was expected that the whole of the "3700" and "3900" classes would be so treated, but it was found that the streamlined casing caused the engines to run hot on express work and they were relegated to goods trains; the casings were removed during the war.1955 February, E. J. Tyler and J. Quanjer, “The Steam Locomotive in Holland 1919-1954”, in Railway Magazine, page 129
2. To run ahead of schedule.
   • 8. Running hot1996, Rolland D. King, Bus Occupant Safety, Transportation Research Board, p. 55, Appendix H: Compromises Made by Operators to Maintain Schedules
   • You are eight minutes ahead of time, and some passengers will miss your bus if you run hot.2010, Robin Hong, Singing Bus Driver, Xlibris Corporation, →ISBN, page 22