Rumble Strip Noise

[Kesler]

After having new front disc rotors and pads installed as well as new drive shafts I encounter a rumble strip noise after crossing over a bump, pot hole or rough pavement. The noise ceases as I coast to a stop ( 5 mph ). As I continue on my way the ride will be noise free until I encounter another bump and the cycle continues. The noise is accompanied with vibration and seems to come from the front right. The guys at the garage are at their wit's end. Other new items are new stabilizer bar and new and newly packed wheel bearings.

The noise/vibration is easily created and I can pretty well predict which bumps will cause it. I can't help but think this is doing great harm to something but I/we ( mechanics) see no obvious damage.

The vehicle is a 1986 4Runner SR5, 22RE engine 211600k all stock. Rear ended once and repaired by a reputable shop. I purchased it new in April 86 and properly maintained but has the wheel well rust that everyone is familiar with. Kentucky gets its share of salted winter roads, especially this one.

Sorry no picture as yet and I am new to this forum, just discovered it in fact. Never had many problems with the machine. I hope someone might have some ideas.
Thanks,
Kesler

 

[541joseph]

I'd check drive shaft bolts. Make sure they are all there and tight

 

[fourwd1]

Why new driveshaft ??

 

[Kesler]

Why new driveshaft ??

I have known for quite some time all the boots were torn, shredded . The mechanics said the shafts were rusted and the replacement boot/shaft was now all one assembly whereas earlier the boots were available separately. So I replaced the entire assemblies. I am no mechanic but I have a rudimentary understanding and my Toyota manual as well as Chilton's and Haynes manuals. I just don't have a garage.

Kesler

 

[Kesler]

As of this date, 2-25-14, Problem Solved! The IFS right drives shaft was defective and made the horrible grinding noise I mentioned in my original posting. The mechanic replaced the drive shafts again as well as new wheel bearings. No grinding noise. The mechanic, though not happy, honored the warranty. It was a hellish noise and I had gotten a second opinion from a highly recommended shop that thought it to be the newly replaced drive shafts. Much relief.

 

[KidVermicious]

The driveshaft is what runs between your transfer case and your differentials. What you're talking about are CV shafts.

Good to hear you got it figured out!

 

[Kesler]

Well, I stand corrected about 2 things. I was calling CV shafts, drive shafts and KidVermicious corrected me. I can't get help here if I don't use the correct terminology. Thanks "Kid". Now the other correction, after I posted that all was well with the warranty repair the same condition reoccurred. It is just as loud but slightly muffled. Kind of at my wits end.

The service writer / manager, who seems quite experienced and owns an 85 4Runner offered some other causes. Tire belt separation, bad shock absorber bushings ( right side ), control arm bushings, and other bushings. Any thoughts?

Lost in Lexington,
Kesler