I had not noticed it until a I had a tow baseplate installed. Thought the tech may have left something. Now I realize it is just a C-5 getting ready for take off!Our electric cooling fan in the JLU is REALLY loud! We hear it at low speeds inside the cab. I was setting on the front porch a bit ago, and I could hear the fan at a distance of at least 50 yards as the wife came down the road. I've heard fans in other cars but nothing like this. Anybody else notice this issue or is it the nature of the beast?
Yep, or when the fan is manually set to high. I've found that if I back it off a couple notches it quiets down, too.In ours, it has nothing to do with the remote start but it's when the ac is set to auto. Turn the ac off of auto and the fan quiets down to normal, turn it back on to auto and the fan kicks on to high and is really loud again.
My guess is it really does need to be that loud. They need a certain cubic feet of air to move across that engine to cool it to the specs they want. There is only one way to do that with a fan which means the fan has to move so much air but is restricted to size and shape of the position it sits in the engine compartment. When you factor all that together you've got a fan that really needs that turbo boost to do what it is needed to do.A cooling system can move a lot of air and cool very efficiently and still not sound like an 747 taxiing for takeoff. For those that love the loud fans that’s cool. But it’s not necessary that it be so loud to cool the engine and not everyone is on a trail for every mile of their Jeep driving. Since we’ve already reached 100 degree temps here and will stay that way for the next 5 months it’ll be something to get used to until the aftermarket produces a “mall crawler edition” fan for those who’d rather it be quieter.
I don’t have a JL yet so I haven't been able to examine it. It’s possible that the fan isn’t the weak link. It could be other components like the water pump or the radiator for example. I’ve replaced radiators in multiple past cars with high efficiency units and made a huge difference in cooling efficiency. On one car the fans seldom cycled on at all because engine temps stayed in the optimum operating range without them.My guess is it really does need to be that loud. They need a certain cubic feet of air to move across that engine to cool it to the specs they want. There is only one way to do that with a fan which means the fan has to move so much air but is restricted to size and shape of the position it sits in the engine compartment. When you factor all that together you've got a fan that really needs that turbo boost to do what it is needed to do.
My daughter has a JK and it's no fun sitting on the beach waiting for your oil temp to go down because the engine is too hot.