Axle vibration/noise help

[tC_Crisis]

Good afteroon! So I got this problem and its driving me nuts, mainly because I'm so busy with work and I have no time or place to lift the car and inspect things my self. Little background of the problem. Driving on 95 doing about 80 I started to get a violent shake, I pulled to the side and call a tow truck. I knew the driver side axle had a torn boot that I had been driving for about 1 year. So first thing I think its the axle. Now.. I ordered a new axle online and have my mechanic install everything. My mechanic ( master tech 30 years +) tells me he had his son take the car up to 80 and everything was good. I drove the car home and it started to shake once again. shakes under acceleration and its not a brake shake. It's also making a horrible grinding noise. so two things i can think of could be the culprit 1. Defective part from online store. 2. Wheel hub bearing gone ? but why ?? wtf? Any suggestions on fix would be greatly appreciate it. I all ready had my mechanic order a new axle but I'm just trying to brainstorm this. Thanks in advance

[criminaltc]

Hmm... the bearing will cause a grinding noise, especially when turning because of the added pressure put on it. I have had cashed-out bearings shake before, but not just at that high of a speed. I have had them shake even at 50. I mean, different vehicle make, but I have had it happen. You're hub just might be shot. What style transmission and how many miles do you have?

[GQQSE13]

doubt this has anthing to do with it but is it possibly your suspension? is it coming from a certain side or front/back? one of your wheels out of balance?

[pyroman131]

If the car is shaking under acceleration, it usually is the tires. You may have one that is worn improperly or needs to be balanced.

As for the grinding sound that you're hearing, inspect your front calipers, too. You may have a very slight metal to metal contact that could potentially be a bad caliper.

[That_Kid_Ju]

Could be the metal disc cover plate (don't know what it's really called) that's behind the rotor. Once had that bent a little and was rubbing against the rotor, making a horrible grinding sound.

[superwhitecoke]

i had the same exact problem and its cause my axel boot was torn in half and all the grease leaked out

[CSOCSO]

"If the car is shaking under acceleration, it usually is the tires."

Uhmm.. NO! I'm pretty sure you don't know what are you talking about. If you have wheel balance/tire problem you will have shake on the steering wheel no matter if you coasting or accelerating around 80mph.

I had the same thing. Car was shaking violently under acceleration. Not just the steering wheel but the whole floor. You can feel it thru the gas pedal. When i changed both front axles the violent shaking was gone. But its still shaking dropped + aftermarket axles= money spent not too well.

About your problem:
Tire? i dont think so. bump on the tire will shake your car regardless of coasting or accelerating or braking.
Balance? no. see ^
Lug nuts? I think they make the car shake when you brake not when you accelerate and def. not at 80mph.
Suspension? Again... i think you would feel it all the time.

[pyroman131]

Originally Posted by CSOCSO

"If the car is shaking under acceleration, it usually is the tires."

Uhmm.. NO! I'm pretty sure you don't know what are you talking about.

I guess you didn't infer that I was referring to the steering wheel shake. When I quickly read the OP's problem, I read through his whole post but for some reason was just thinking that his steering wheel was shaking only - not the whole car itself:

"Driving on 95 doing about 80 I started to get a violent shake..."

^ When I read this quickly, I assumed steering wheel shake, not the whole car shaking, as this sentence is indeed ambiguous (e.g., What is shaking? This is not definitive and you are left merely to assume what may be shaking. Is it the car shaking? Is it a shake in the steering wheel? Is the driver shaking? I don't know! I inferred the steering wheel was, because that's a logical, sensible inference). You can only insert your assumption based on inferences. After, I then addressed the grinding issue through my experience.

With my explanation, I believe you can now see why I stated a tire issue if and only if the steering wheel shaking was the primary concern; However, clearly you can derive that due to ambiguity, perceptions change for diagnoses.

[CSOCSO]

tldr

[LEDeZ]

Sometimes tire imbalance can only be felt when going a bit faster. Just depends how unbalanced they are.

Did you check your inner/outer tie rods for excessive play?
Here a good website. http://www.valvoline.com/car-care/au.../ccr20060301tr

You can also check for wheel bearing play if you do what the website says at 12 and 6 o clock.

Real easy to do and can elimate a couple componenets.

[tC_Crisis]

thanks for all your input! Turns out the right side drive axle was bad on it as well. OR i may have replaced the wrong axle LOL. anyways BOTH axles were removed and replaced.

I still have a small amount of shake but i think its my tires being cupped from driving it while a damaged axle. I plan on getting the Front tires swapped across and balanced see if that takes care of the small vibrating issue.

The griding noise was the backing plate hitting the rotor lol.

like i said thanks again for all your input.

[tC_Crisis]

Originally Posted by LEDeZ

Sometimes tire imbalance can only be felt when going a bit faster. Just depends how unbalanced they are.

Did you check your inner/outer tie rods for excessive play?
Here a good website. http://www.valvoline.com/car-care/au.../ccr20060301tr

You can also check for wheel bearing play if you do what the website says at 12 and 6 o clock.

Real easy to do and can elimate a couple componenets.

this i shall do as well. I have just a tad under 100k miles on my car, so I'm a bit concerned. Anyone know the life of the hub bearings?