Failed CV Joint?

05 to 09 manual gearbox bearings are notorious for having limited lubrication and an unusually short service life. They can be repaired by fitting sealed type bearings but that is about as expensive as replacing the gearbox and unfortunately the suppliers are only too aware of the demand.

fordem wrote:

Call me sceptical, but I have to wonder how we get from "A to B", front driver's side axle to gearbox, and I want to suggest another opinion.

 

I watched the video just now, and it sure seems like the bad noise is a tap-tap-tap at a regular interval at some regular multiple of wheel speed.  In other words, it is not a single tap with each turn of the wheel, or an intermittent/irregular sound.

We know it's drivetrain, that much is already obvious.  But there are several important potential noisemakers between flywheel and road wheel.

The gearbox is one, but in my opinion it is not the likely source.  That is for several reasons: gearbox noise is almost never a nice tap-tap-tap; gearbox noise will typically change depending on what gear you are in, and how much torque you are applying; and gearbox noise tends to change markedly the faster you go.

The other components are the transfer case, the front diff, the hubs, other front axle components (bearings, brakes, shrouds, joints), and a couple of driveshafts with their associated UJs. 

All of these components are well separated and easily accessible, and one of these components -- and only one -- is singing out loud and clear.

​​​@fordem says, another opinion is needed -- but I would take that farther and say you need to find a different shop. 

Go to one that does 4x4s only, or heavy trucks and ag machinery if you don't have a local 4x4 garage.  Your Jimny has a lot more mechanically in common with a big 4x4 than it does with a typical road car.  Someone familiar with four wheel drive vehicles will find this problem without breaking a sweat, and will fix it for a whole lot less than the cost of a gearbox replacement.

Short version: 1) this will be an easy problem to identify and fix, 2) if you can't do the work yourself, then you need to find a garage more savvy than the one you have now.

Sounds like gearbox to me- listen to the rattling in reverse!

Given that it is a 2006, I'd say there is a collapsed bearing, probably the one on the mainshaft in the centre of the gearbox. 
It may have caused gear damage from the clicking which sounds like a tooth off which will be an expensive rebuild.

By all means get another opinion from someone who is under the car rather than watching a Youtube video though!


Sounds travel on the Jimny, I changed the rear diff on mine due to a noisy rear axle and eventually tracked the noise down to a front wheel bearing- and I even had one of those "mek-a-niks" ride in the back to confirm my opinion that it was the axle- but it was strange that we couldn't hear it when we ran the car wheels off the floor.......

facade wrote:

Sounds like gearbox to me- listen to the rattling in reverse!

Given that it is a 2006, I'd say there is a collapsed bearing, probably the one on the mainshaft in the centre of the gearbox. 
It may have caused gear damage from the clicking which sounds like a tooth off which will be an expensive rebuild.

Definitely could be; part of the fun of Funny Sound threads, they could be several things.  I just think that the gearbox is not the most likely, because you'd get other things coming from a failed gbox typically.  But as you say, pinpointing the noise whilst up close & personal with the undercarriage is the key task.

(I always tell myself I'm not going to get sucked into the weekly post of "what is this mystery noise in the attached phone video featuring at least six different mystery noises" ...)

It won't hurt to see if it makes the noise with both back wheels securely jacked up clear of the ground and the fronts chocked so it can't move, you might need to pull the handbrake on a couple of notches to put some load on the transmission.
If it does, then finding it is relatively easy (if you take the relevant safety precautions)

I'd expect that a garage would have done it on a 2 poster.