07navi
Full Access Members
Any rapidly spinning fan is very loud.
Electric fans loud
- Thread starter OGBobbyJohnson
- Start date
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OGBobbyJohnson
Well-Known Member
Yes. And live in Florida
Robert McMillan
17plati
It goes away with an upgraded 170 tstat
Boostedbus
Full Access Members
Another HD tow package 2017 EL here with super loud fans mainly when ambient temp is 90*F +. Mainly notice it while idling sitting still running Max A/C front and rear. I’m glad that it speeds up to warp speed while no air is moving across radiator, trans. cooler, A/C condenser, and inner cooler to prevent heat soak on everything. My wife has commented about it being loud ,but like I told her I’ll take loud over overheating any day. That’s one major plus electric fans have over mechanical fans, they can speed up well past the engine rpms when needed to keep the cooling system within its temp range.
07navi
Full Access Members
Probably one reason they went to them on later cars. My last 2 trucks didn't blow cold AC air until it was moving. The fan clutch helps but not enough.
OGBobbyJohnson
Well-Known Member
07navi
Full Access Members
Yes but once it opens it's all rad so it makes no difference. Messing with t-stats is not a good idea in these computer controlled vehicles.
Sunflowergirl
Full Access Members
@07navi and @OGBobbyJohnson the 170 tstat works perfectly. Prior to install my coolant temps would spike to 225-230 during WOT pulls and driving in the heat. Installed a 170, which is programmed into my tuning device to open earlier, thus successfully knocking my WOT temps down to below 195. I have not seen above 195 in almost a year since install and that’s in 100+ degree weather also. In order for it to function properly you will need a custom tune. Just putting a 170 in on stock tune will do nothing
07navi
Full Access Members
Agreed.
99WhiteC5Coupe
Full Access Members
Same with my 2015 Expedition Limited 4x4, purchased new - very loud, roaring fans. I returned it to the dealer and was told it was normal. There is no mention in the vehicle owner’s manual of excessive noise from the fans under certain conditions.
