Odd Engine fan behavior

[Waterloo]

I’m thinking the fan selenoid. Follow the airline from your fan up to the firewall. At the firewall, you have to remove the air filter box to get to it, is a small valve. It has two or three push pull inlets and an electrical connection. Mine is attached to the frame work that the air filter assembly attaches to. Bet that is failing... You can find them at most parts stores, I bought one at FleetPride for around $20, dealer wanted double that. You got my best guess, first thing that came to my mind.