When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
A fan in the engine compartment came on yesterday for the first time. I was empty doing 65. The truck has 25k. 6.4l. Truck is stock no mods. The fan that engages is loud like a blower. No check engine or wrench light. Temp Gage is normal and the degas bottle is at the proper level. The fan will dis engage for 20 miles then when I get in town it will engage doing 10-20 mph. Input would be appreciated thanks.
Quote
Bought it at 18500. It was just at the dealer for oil change n fuel filter replace ment. This is the first time I have heard it engage in 7k miles. How does the hvac control the fan?
The fan would come on if needed to if you needed AC. I may also come on if it needs to cool the fuel cooler.
For mine at around 220F the fan will engage. There are a couple of different settings.
Since you are under 36K miles you may have some bumper to bumper left so you could perhaps speak with the service advisor and see if they can check the operation of the fan for you...
It appears to be operating normally based upon your discription.
You could get a scangauge II to monitor those temps.