I have howling coming from my drivetrain.. I have a hack n tap sye with front drive shaft and a soon as I hit 55 jeep howls load as he//! And if I let off goes a way.. I even got it to 55 on ice so I no its not the front drive shaft or wheel bearings. u joints??? Idk replaced the one u joint before I installed it but dk how to with that Cardon joint it just started ive had it in a couple months...thanks for any help! Butch

 

You do realize u posted a oem tech question in the for sale section ??

 

You're gonna need to post your location, as stated in the For Sale section rules.

 

Woops sorry

 

 

Try putting the rearand up on jack stands and have someone give it gas while you walk around your jeep and find the noise on the drivetrain. good chance it is the u-joints. Wheel bearings also howl when going out. hope this helps

 

Also check ur pinion bearing. My started howling around 40 and progressivly got louder as u sped up. Then backing outta the dway on a wet day, it hooked up spun twice and pow. Pinion bearing demod itself and yanked dshaft out of tcase. if that happens and its lifted, might as well go head and use that as an excuse 2 regear or upgrade axlea like i did. 8) glw search for prob.

 

As stated pinion bearing or ring & pinion gears. U-joints don't make any noise they just vibrate before they explode.

 

Correct me if I'm wrong, but doesn't proper diagnosis of a pinion bearing necessitate disassembling the entire rear differential? Take the drive train off, Jack up the back end, and have a buddy spin the $#!+ out of the tire. You Should be able to Tell where the noise is coming from with the old screwdriver to the ear trick.

 

My u joints were bad in the cardan joint.. But now it vibes at highway speeds.. Not a constant vibe it has like 2 sec intervals but will do it the whole drive... Unbalanced drive shaft??? How do I no?

 

Is your rear pinion pointing right at the t-case output shaft? If not, that might be your problem.

 

That would cause that kind of vibe?? Tryed uploading pic it won't let me..

 

I believe that there's a stickie somewhere that deals with uploading pic's.

Yes it can.

 

It was my phone..

 

Does that angle look good? Can u see if not can take another pic