2004 Jeep Cherokee Whirring Noise from Dash area

NICK5405

MEMBER
2004 JEEP CHEROKEE
V8
AWD
AUTOMATIC
75,000 MILES

I have a whirring noise that seems to originate from the center of the dash that is pronounced when braking or turning right or on an uneven road when the suspension flexes. I assumed that the noise was coming from the front end somewhere so I changed the rotors and Pads as well as both sides wheel bearing/hub assy but still no good. The front differential has oil but I did notice that the drivers side axle mount was "wet". I checked the drive shaft and that is bone dry. The boot looked OK but I'm wonedring if I should take that off and re-pack the bearings in there as well

Saturday, November 21st, 2009 AT 10:51 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,055 POSTS

Hi:

THe drive shaft should be dry. I believe there is a slip joint that is greasable, but that is it. Unless you are refering to the axle that has a CV joint at each end covered by a rubber boot. If the boots are not ripped, the joints should be okay. Also, when they go bad, they usually make a clicking noise.

I want you to check something. First, make sure there is no play where the front drive shaft attaches to both the differential and the transfer case. Next, make sure the backing plate behind the rotor isn't bent or rusted and making contact with the rotor as it turns.

Let me know what you find.

Joe

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Sunday, November 22nd, 2009 AT 10:07 PM