Loud noise inside the car when driving at high speed and even low speed

Check for a broken fan blade.......

engaging 4wd at speed is not recommended as the syncro set up is for low speed operation only Using 4wd on hard surfaces especially with your tyres does not allow the wheels to slip and so you get torque wind up in the transmission. This prevents the gears from disengaging as there is excessive load on the teeth. To unload the wind up either drive on a grass/ gravel/ slippery surface or stop and allow the vehicle to run backwards. IT all amounts to driving technique and knowing when and where to engage 4wd. There are plenty of books /magazines that explain the damage that will be done to the vehicle running gear if run in 4wd for long periods on hard surface roads.

A car engine is bound to make noises. After all, there are so many moving components and parts inside of an engine as it is running. Most of these noises are not very loud and they are nothing to worry about. But there are times when engine noises will sound a bit unusual or strange.

A good example of this is when there is a ticking noise coming from the engine. A ticking sound could be caused by any number of reasons, such as a low level of oil or loose components.

You may hear a ticking, clicking, or tapping noise while the vehicle is idling, accelerating, or even after receiving an oil change. To understand what the actual problem is, you must understand the signs to look out for.

Check front tyres & wheel bearings espesially the R/H/F. Feel tyre for high / low spots on inside & jack up & spin wheel if you get noise while jacked up it is not the tyres but wheel bearing or brake pads but more than likly a crook bearing by the sound of it. It needs to be tended to ASAP

Have the engine cooling fan operation checked, it may be defective and that can cause the noise.

that depends on if you think the noise is coming from the motor, or the actual road noise that comes with driving , its probably the same at both speeds but sine you have less air and outside noise,, you hear it more at lower speeds. does it make the same noise when started but not moving? if you answer that yes, then its something else besides road noise, if it is no, then get your front end checked, it could be anything from a bad alignment to a bad wheel bearing, or bad brake ,

Not sure if this is this answer, but I had a problem with a noise under the front end once....turned out to be the cowling under the front bumper....it was broken and it took a high speed to force it down enough to hit the road.

Good luck!!

Even though there may be some brake pad remaining, sometimes you need to machine or replace the rotors in order to get rid of a noise. Rotors can develop a bad wear pattern that acts against a glazed pad to produce a loud noise even if they are not worn out. Replace the front brakes, pads and rotors.

sounds like something inside blower fan that should not be there , higher speed causes outward force inside so that whatever is in there is forced against the blades and therefore is not as loud

i have the same noise to my 2005 ford f-150
i beleive its a frozen bearing in the universal

does your truck also ingage its self into 4 wheel and make a loud noise
only way to stop it is to stop the truck or shift into 4 high on the go
only happens when it wants 3 times a day or not for a week