Yes. The light will stay on longer as it gets colder. If you ever have any doubts about it, you can always leave the key in the run position for a longer period of time before you crank the engine. The glow plug relay will still be energized for a longer period of time than what the light says anyway.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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