Front Axle Noise

hunter401 · Post by **hunter401** » Thu Feb 26, 2009 9:36 am

I have started hearing some new sounds from my front axle. I just replaced the Tansfer Case Vacuum Switch and Front Axle Actuator. Now Then I am in 4x2 there is a noise comming from the front end and it goes away when in 4x4. The Noise starts at 45mph. Any Ideas what this could before I pull it all apart to replace my Oil Pan gasket and rear main seal?

raven2510 · Post by **raven2510** » Thu Feb 26, 2009 1:52 pm

might be low on fluid?
can you describe the sound it makes?

hunter401 · Post by **hunter401** » Thu Feb 26, 2009 2:42 pm

It sounds like a hub bearing. It sounds like it is coming from the right side. There are no leaks, the fluid was changed less then 8,000 miles ago and there is the proper amount of fluid in the diff. and the correct fluid was added.

F9K9 · Post by **F9K9** » Thu Feb 26, 2009 6:25 pm

hunter401 wrote:It sounds like a hub bearing...........

Then it just might be the bearing assembly. Jack it up and grab it at the 12 + 6 O'clock position. If, it has play then replace it.

hunter401 · Post by **hunter401** » Fri Feb 27, 2009 9:59 am

I thought it was the hub bearing at frist. I replaced the hub bearing about 2000 miles ago. I check it again and theres no end play in it. It does sound like its comming from the right side I was thinking something with the Clutch fork for the front diff.

F9K9 · Post by **F9K9** » Fri Feb 27, 2009 4:40 pm

Did you replace both assemblies? I recently got fooled on a heep. I swore up and down it was the right side making the noise. The noise didn't stop until I replaced the left one as well.

hunter401 · Post by **hunter401** » Fri Feb 27, 2009 6:29 pm

I am going to check the other side. I know for a fact the right side wheel bearing was bad. Would the Prop Shaft make this noise when not in 4x4?

hunter401 · Post by **hunter401** » Sun Mar 01, 2009 12:41 am

I just replaced my front left wheel bearing. Some Noise went away. Now when I am at 45+ mph I get a hollowing sound with a slight vibration. It get louder up to 60mph. Then disappears at 67-70+ Mph. When I put it in 4x4 on coast and decelerations I get a hollowing sound from the front diff.

JaVeRo · Post by **JaVeRo** » Sun Mar 01, 2009 7:25 am

Your front axle may be staying engaged even though your transfer case is not.

With you truck running and the transfer case in 2wd, block the wheels and try turning the front driveshaft. It should turn with very little resistance.

Just a guess.

James

hunter401 · Post by **hunter401** » Wed Mar 11, 2009 6:32 am

Something else I just noitce about it. When everything is cold there are no sounds, once everything warms up it starts making sounds. The front diff fluid was changed about a year ago (about 8,000mi).

MinnesotaMudder · Post by **MinnesotaMudder** » Sun Jul 19, 2009 10:07 pm

this same problem happend to me i replaced a lot of parts and it turned out my CV axle went out.