I have a roar coming from my front end that gets louder as I increase in speed. It sounds like Im riding on 44" super swampers. I replaced the right front wheel bearing about 6 months ago but this sounds different then the wheel bearing. Where should I start looking?
Could it have something to do with your encoder motor? Mine failed some time ago and I would get that exact same sound (intermittently). It would quit when I would put it into 4 high then back into 2X.
Also you may want to look at your brakes possible seizing up just slightly enough to be making noise.
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1999 Blazer 4x4 LS "Blackie"
Monroe Reflex Shocks
Moog U/L Ball Joints
K&N FIPK Gen 2 Cold Air Intake
Flo-pro Soundpro exhaust
Optima Redtop
132k miles and still rolling....
I am having the same problem same sound. Just went through the entire front end and replaced everything from Ball joints to pitman arm... Now I am getting a moaning noise... I figured it was wheel bearing.... Blazer is perfectly streight....
Just checked the fan. I could spin it freely so I guess thats not it.
it should turn freely with the engine off. when you start the engine the fan clutch will engage and cause a roaring sound for a second or two then shut off. check to see if the fan is turning after a few seconds with the engine stone cold.
I have a 96 S-15 Jimmy and had a similar noise coming from the front end. Originally it was thought to be the bearings so those were replaced but that didn't fix it. Ended up having to put a new (well used) front differential end and then the noise went away. Not cheap either. Might not be your problem but might give you something to have checked out.
