Strange grinding sound?

[offroad cowboy]

I just bought a 06 limited when in 4wd spining (tcs off)i hear what sounds like the abs pump or a grinding sound from the front end could anybody please help me with this thank you

sent by telegraph from my k30

 

[dude1116]

First thing to check is the CV joint and boot at the transfer case end of the front drive shaft. If that's destroyed, then that's your issue!

 

[offroad cowboy]

Joints and ft diff bearings are good i tested it today and it even does it in 2wd and the lights dim when it happens :/ im a newb when it comes to these libertys

sent by telegraph from my k30

 

[dude1116]

Joints and ft diff bearings are good i tested it today and it even does it in 2wd and the lights dim when it happens :/ im a newb when it comes to these libertys

sent by telegraph from my k30

Are you sure you're looking at the right joint? This is a CLASSIC case of this joint failing...Besides the lights dimming part...which I feel like isn't related.

http://www.jeepkj.com/forum/f202/how-check-front-driveshaft-t-case-end-cv-joint-54135/

Do you feel an ABS pulse? If it's an electrical problem...it could be a failing battery. A battery that's not outputting enough voltage can make all computerized systems go nuts.

 

[CactusJacked]

You could have an alternator starting to go south, with a bad bearing trying to lock up. Trust me, it's no fun when that happens......when on a road trip.....hundreds of miles away from home.....with no parts stores having one in stock.

 

[offroad cowboy]

It almost sounds like a abs pump

sent by telegraph from my k30

 

[CactusJacked]

Then unplug the ABS pump (it's an electric motor) and listen to see if the noise goes away.

 

[offroad cowboy]

Thank you all for the help it is the electronic limited slip /abs pump making the strange sounds im new to cryslers els system and had never herd it function before but this weekend in the snow allowed me to test all the electronic systems and figured out what was causing this strange sound

sent by telegraph from my k30

 

[lejeep]

My 2007 (ESP) used to make grinding sounds when I had wheel spin on the rear axle. With new rear brakes and a diff fluid change (It pretty sure just the brakes fixed it), the sound went away or became very quiet.

 

[Porkchop]

Some times I'll make ii do it in 2wheel drive on an icy snowy road just to make sure it's working like it's suppose to. No other reason but just to see. That way when it does happen your not surprised by the sound or the feel of the brake peddle.