Engine fan on and off every 15 seconds at idle, and under 30 mph.

[Beardedtrucker]

Ambient temps don’t reach above 90 really in Atlanta. I should mention it starts doing it about 1 min after cranking the truck when it’s cold. Also to note the ac doesn’t blow as cold as it use to after truck is warmed up. Unless im at speed. And also it kind of cycles to blowing cold to a less cold to just air then back to cold…sometimes lol. Like it has moods. Maybe that info is worth a penny with this.