2 problems, 2 questions.

[Mr.PFloyd]

okay so this is on my brothers car. 1 kinda of pissing me off for a while. when he reaches speeds of 120 km/h + (so 76mph +) the car starts to rumble like crazy. the whole car feels like its going to fall apart. I am thinking of the drive shaft u joint being the culprit. any other possibilities? Also if a wheel bearing is shot, the wheel wouldn't be able to rotate correct?
Now as for the second problem, which i basically need suggestions for it. His brand new set of JDM tails went on, and they look gorgeous. days later, i see that the driver side one has come out. i figure no biggie, loose screws. when i go to look at it, the screws are still in place, its just the plastic has separated from the metal! any suggestions on what to do for this problem? thanks in advance guys.

 

[NJsupraA70]

I had that problem a long time ago. I put in a brand new carrier bearing and that didnt help. I then changed the front wheel bearings and bingo did the trick!

 

[Mr.PFloyd]

well yeah i suspected his fronts were bad.. hmm time to see how much yota charges
edit. got any part numbers or a link for the tsrm?

 

[MassSupra89]

The wheel will still spin freely with a bad wheel bearing.

Something similar happened to my friend just this week in his blazer, any speeds above 20 he could feel a rumbling, and it would get progressively worse as speed increased. It was the ABS sensor in his 3 month old wheel bearing.

 

[bluepearl]

The wheel might spin freely with a bad bearing without a load on it, but it won't run smooth, gauranteed. Please tell me how a bad speed sensor can cause a wheel vibration?

 

[loki2043]

mine also gets pretty crazy rumble at about 80+ mph, there is some play in my driveshaft where the bearing is...

 

[MassSupra89]

The wheel might spin freely with a bad bearing without a load on it, but it won't run smooth, gauranteed. Please tell me how a bad speed sensor can cause a wheel vibration?

Never said it would ride smooth, but it's not gonna lock up. The car still moves, does it not?

In my friend's case.. When a wheel speed sensor is bad it will tell the ecu that the tire is spinning at an innacurate speed and the ABS will act upon this.
ie: if the sensor is telling the ecu that the wheel is spinning slower than it really is, the ABS will activate thinking it is locking up.

He had the problem especially when turning left, when the problem was with the right front. the change is speeds of the wheel caused the ABS to think it needed to apply/release the brakes.

 

[suprarx7nut]

^^^ Thats an odd problem, never heard of it....


....Anyways, the rumbling has been due to wheel bearings twice for me. Not in a supra, but i think most cars will act the same with a bad bearing. Mine would vibrate slightly, but more noticably it would make a low rumbling noise. It was hard to notice at first but progressively got worse.

If it is a bad bearing, you can probably tell when you take it off the car. Both the ones i dealt with felt rough to the touch when rotating it by hand. The new ones felt incredibly smooth and were much, much easier to spin by hand.

GOOD LUCK!

 

[loki2043]

as in rumble are you talking about a sound? mine is undrivable over 80 from shaking...

 

[johnathan1]

Undriveable? Maybe your tires need to be balanced? I had the Nitto NT-450 tires on my car, and they really such...they developed bumps on the surface of the tires that threw them completely out of balance, and the car would vibrate so bad on the freeway that you couldn't see out of the mirrors. Got new, balanced tires and it completely went away.

 

[suprarx7nut]

If its undrivable above 80, I'd say center carrier from what I've heard, but I haven't dealt with that. The wheel bearings should make more noise before they shake the car that violently. Mine was very, very loud and sounded/felt somewhat like a wheel thats out of balance. It just feels a little rough and makes a lot of constant noise.

OH SOMETHING I FORGOT....

If its a wheel bearing, you should be able to tell (by hearing or feeling) when driving exactly which wheel is the problem. If its affecting the whole vehicle evenly then you're either dealing with multiple bad bearings(which would be incredibly bad luck) or its something completely different.