The Fast Cheap Way Mechanics Diagnose the Wubba Wubba Noise on a car or truck

by birtanpublished on September 6, 2020

Before repair after this is what I will have a bearing assembly looks like you can't really see the bearings until you take the CV axle out from the middle and take a spindle out and everything apart and then you can get in and you can see the bearings these are actually the

Roller bearings that look like little steel marbles and they run on what's called a race and the race this is where the balls would ride right here is highly polished and it's really strong you see this one's been cut to get it

Off the spindle when they're bad like this one's severely pitted you can't see it because it's all enclosed and it's underneath a bunch of stuff and it takes about three hours to change one of these it's a lot of work so rather than just

Guessing there's a way that you can find out for sure most vehicles that I know of that have a wheel hub assembly like this also have McPherson struts I'm going to teach you how to use the strut spring in order to diagnose which

Bearing is bad and if it is bad or not because the same sound can come from tire issue or something else and not have bearing but there's an unmistakable way that you can tell if it's the hub bearing or not without taking anything

Apart all you have to do is lift the front of the vehicle up Brian's mobile one for the purposes of this video we're gonna be used in a 2005 Toyota Sienna minivan we're in the Toyota Sienna woman straight it's just kind of the same

Droning it really picks up like a wild heartbeat and we're about to curve on to the left watch a string we'll go to a little left watch the speed it gets louder now we're gonna turn to the right

Quieter we return to the last look I'm fast but you hear it more when we turn to the left so when we turn to the left the weight of the car goes to the right so I'm going to turn to the left as I turn to the left I lean to the right you

Hear that so that can be one of two things in my experience and those two things are it can be tire wear you can have a bad tire or the other thing is a bad wheel hub bearing and then there's a fringe one

Out there that's not very common but it can happen and that's an inner a CV axle joint so if you have a bad CV axle joint on the import side you'll get that but it'll be more pronounced when you're on the gas

We're getting it just pretty much all the time no matter what we're on or off the gas if I let off the gasket boots I'll get up to speed you're the I let off the gas it's the same we've got Stephane and we're gonna have

Him grab the spring and turn the wheel forward direction because that's where the noise is most manifest what do you feel when you do it on the left side feels like a stationary doesn't really move on no vibrations going up to this

Spring cool let's try the other one can hear a difference it sounds different how does it feel what worse a lot more vibrations going up to the spring yeah you can feel a lot more restriction on the tyre and

The very cool so the spring on the other side how would you describe that as far as feel a lot more stationary no vibrations going through it this side there's a lot more vibrations going up to the actual spring so these are the

Two hubs this one's from the right side this one's from the left this one has more rust on it so it must be the bad one left side and we thought it was the right before this is the right side as you're sitting

In the vehicle passenger side this is the bad one we're gonna go ahead and do both because these have been all the same places made in the same factory all conditions being the same this one won't be too far behind this will just make

The vehicle that much more reliable got the alignment done you don't hear anything we're turning the left so it should be roll out new bearings on both sides remember it would increase with speed so go to the left no noise I think

We've got a good diagnosis it's louder we return to the last one fast so this is the same cul-de-sac as before as I come around it's just silent it's not as exciting as it was before used to be kind of you know like climatic like you

Know it's like a rap song or some kind of Michael Bay film alright big left turn any noise good whisper quiet bonus footage at the end so this cave goes in all directions down here pretty big area say all the bats there's a ton of bats

In here fellas oh yeah you see all the guano on the exit that tells I saw probably 50 go by just knowing wow holy Wow I said big cave do this thing is wide and see all the you see that bat fly boy it's a good thing they got sonar

They'd be hitting me look at that that just goes on you're not

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