Front end noise

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FortCollinsT4R

New member
Hey everyone!

06 4th gen V8 4x4 80K miles.
I've got a noise in my front end somewhere. It sounds like a wheel bearing noise but only makes the noise while I have my foot on the accelerator, when I let off it seems to go away. I have recently replaced both front wheels bearings to try to solve the problem, obviously didn't fix the issue. I am now considering dropping the front diff to replace the outter bearings and the pinon bearing etc. while in there to chase this noise. Also, last Friday, I dropped the front driveshaft to feel the u-joints, no stiff spots at all. I am at a loss now, has anyone experienced experienced this issue or have any advise?

Thanks in advance.
 
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When I purchased my used 2005 with 140k, I for sure thought it had a bad front bearing, but the dealer replaced a rear bearing and it solved the issue. I could hear and feel it in the steering and pedals, but low and behold, all quiet and smooth now.
 
That's interesting man. I'll have to see what I can do there as far as checking for noises while it's up in the air. Thanks for the reply!
 
Do you notice a difference between 2 and 4wd? I had a similar problem on my 3rd gen, turned out to be a bad universal in the rear driveshaft. Found destroyed needle bearings when I took it apart.

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I had a little clunk noise that turned out to be the LCA bolt, was able to crank it a bit and get it tighter. Maybe give a shot.
 
Well unfortunately in this particular situation my V8 with full time 4x4 doesn't help. I tired to just remove the front drive shaft but the car then will not move due to all power going to the front, thinking the wheels are stuck or something. Also, my noise isn't a clunky noise, it's a humming/rotational noise.
 
FortCollinsT4R said:
Hey everyone!

06 4th gen V8 4x4 80K miles.
I've got a noise in my front end somewhere. It sounds like a wheel bearing noise but only makes the noise while I have my foot on the accelerator, when I let off it seems to go away. I have recently replaced both front wheels bearings to try to solve the problem, obviously didn't fix the issue. I am now considering dropping the front diff to replace the outter bearings and the pinon bearing etc. while in there to chase this noise. Also, last Friday, I dropped the front driveshaft to feel the u-joints, no stiff spots at all. I am at a loss now, has anyone experienced experienced this issue or have any advise?

Thanks in advance.
Click to expand...


Pinion bearing seems pretty logical given the circumstances. I would check the fill level by pulling the fill plug and topping it off. See how much it takes. Then take it for a spin. If you're lucky and this is relatively new you may get away with just having the correct amount of fluid (if it was indeed low).
 
[MENTION=156520]FortCollinsT4R[/MENTION]

I have the same situation, what was your end result?

I jacked up all four tires had it in Drive and put a stethoscope to the front diff and that's definitely where the noise is coming from. I haven't been able to find much of any information on front and if pinion bearing replacement so any advice or foresight will help. Thanks in advance
 
[MENTION=156520]FortCollinsT4R[/MENTION]

I have the same situation, what was your end result?

I jacked up all four tires had it in Drive and put a stethoscope to the front diff and that's definitely where the noise is coming from. I haven't been able to find much of any information on front and if pinion bearing replacement so any advice or foresight will help. Thanks in advance
 
grocery_getter said:
[MENTION=156520]FortCollinsT4R[/MENTION]

I have the same situation, what was your end result?

I jacked up all four tires had it in Drive and put a stethoscope to the front diff and that's definitely where the noise is coming from. I haven't been able to find much of any information on front and if pinion bearing replacement so any advice or foresight will help. Thanks in advance
Click to expand...

While you have the front differential open, check the gear teeth for any wear, chips, or strange patterns.
Make sure the gears are fitting together correctly because if they're not, it can cause noise and make the bearings wear out faster.
Also, have a look at other parts like the carrier bearings and seals for any signs of damage, as that could also be causing the noise.
Plus, I'd check the fluid level and condition in the differential. If it's dirty or too low, it can make noise.
 
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