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Vibration @ high speed? Need help

10K views 57 replies 24 participants last post by  Mandidy  
#1 ·
Lately, I notice that when I hit 80mph, the front end started to vibrate. If I release the gas pedal, the vibration will disappear. It feels like the car has a flat tire or the alignment is off. However, this vibration is NOT coming up all the time. Mostly, at night. At day time, it doesn't vibrate at all, even with that speed or faster. It only appears when I was on the freeway. On the street road, it rides smoothly.

My mechanic test said that it MAY be motor mounts, but not sure. I think is my drive sided axle, which is the original axle. My Legend is 1994 with 85k miles. Will that axle last that long? Also, how long the motor/tranny mounts will last? What do u think?
 
#2 ·
The axles should last that long if not longer..your vibration couls be a bad tire or out of balance one..start simple before you get to the motor mounts..does it also do it when u brake...
I had a car once that would do this because on the brake calipers would grab the disc and cause a front end to shake...good luck and get back to us...
 
#4 ·
DntH8 said:
The axles should last that long if not longer..your vibration couls be a bad tire or out of balance one..start simple before you get to the motor mounts..does it also do it when u brake...
It won't vibrate when braking.

KokDahkJeE said:
if you got your tires at Discount Tires, i say go there ask them to re-balance and rotate your tires and see if the balance was off
its free, so what harm could it do?
How do u know I bought my tires from Discount Tires? :D :D For sure, I will give them a try, like what u said, it won't hurt... I will let u guys know... ;)
 
#5 ·
check out your tranny mount and your ball joints. I had the same problem and after finding out that my tranny mount was broken and ball joints were bad, had them fixed and now it runs smooth again...check those two things out..good luck
 
#6 ·
some possible causes: Out-of-round tire; tire with flat spot; tire with damage to casing; tire out of balance (Legends are sensitive to this); wheel not round; wheel laterally bent; loose ball joints; shocks that are worn out; bad tie rod ends...

All of the above are simple to diagnose, and cheaper than axles and mounts. I'd start with the tires and wheels if it was my money.
 
#8 ·
I have the same symptoms right now and took it to the shop today thinking it was the axel shaft(left). He said he saw nothing wrong. I have the vibrations only when accelerating and I also here a chirping squeeking type noise when I let up from accelerating but don't take my foot completely off the gas. I'm stumped and now thinking it could be a tranny mount. I'm getting frustrated :mad:
 
#12 ·
now to go a step further

... i too have a similar vibration at 70mph, but when i hit the brakes (even slighty) the steering shimmys hard, and the car trembles, is this likely a brake issue?
 
#13 ·
aquapura said:
... i too have a similar vibration at 70mph, but when i hit the brakes (even slighty) the steering shimmys hard, and the car trembles, is this likely a brake issue?
Check your disk brakes they might be slightly warped. And the Vibration at 70mph might be one of these (balljoint, alignment, tire balancing, axle, tie rod ends)
 
#15 ·
aquapura said:
... i too have a similar vibration at 70mph, but when i hit the brakes (even slighty) the steering shimmys hard, and the car trembles, is this likely a brake issue?
I had the same problem with my car. I had the rotors and pads replaced and now my braking is smooooooth. I still get vibrations but I know that I need new tires. I had the tires balanced and that helped a little but new tires will make it feel like new.

BTW, how much am I looking at to get the engine mounts replaced? Also tranny mounts?
 
#16 ·
I had the same problem. Sometimes the vibration was there, sometimes it wasn't. After a while, it started to happen at low speeds too. And it went from a mild vibration to feeling like my axles were about to fall off. Turns out my differential oil had worn out and caused the diffy to bind at times. It went away when I changed my fluid.
 
#17 ·
Ackvigend said:
Check your disk brakes they might be slightly warped. And the Vibration at 70mph might be one of these (balljoint, alignment, tire balancing, axle, tie rod ends)
would warping also explain why suddenly my new front pads are squeling on every single stop now :mad: . i had them for 2 months w/no issue, but they now scream all the time. and now that i think about it, the noises came about around the same time the vibrations did.
 
#18 ·
lol.. talk about a can of worms... i just had a wheel alignment done and low and behold i get this noise/vibration for about 5 mins on the motorway... sounds/feels like i've got a flat spot (or vaguely like a flat tyre) or am driving over those lines on the road to tell you to slow before an intersection, but as i say after about 5 mins it goes away... so im thinkin its either my tyres, steering linkages, or somthing else which i havent figured out yet(low auto fluid?)which gets warm and changes state so as to reduces the noise... mmmm... strange huh
 
#19 ·
There are several POSSIBLE reason why your car vibrates. First reason that any mechanic will assume is your mounts are worn off or broken, that's very logical. The second reason is probably the alignment of your car --> if your tire/s are prematurely worn off or your car tends to drift to other side, that's means you need your alignment done. CHeck your tires too because different size of tire or different kinds of thread will set your alignment off which sometimes cause the vibration.
 
#21 ·
aquapura said:
would warping also explain why suddenly my new front pads are squeling on every single stop now :mad: . i had them for 2 months w/no issue, but they now scream all the time. and now that i think about it, the noises came about around the same time the vibrations did.
Well maybe, but first check your brake pads if they are loose. Did you apply disk
queit(like a glue) on the brake pads? If not try to put some so that your brake pads doesn't get loose when you apply your brakes and It shouldn't sqeak. BTW Cleaning your brakes might help.
 
#22 ·
guess what

the front rotors were in fact warped. but rather than change only the front rotors, i'm considering putting the extra money in and go cross-drilled on all four. now i know brembo is the best way to go, but am curious to the quality of the brakes listed on ebay? as anyone had any experience w/those?
 
#23 ·
I changed all the rotors and brake pads in my car and it was smoother. Than yesterday I got 4 new tires and now the car runs smooth as S%*^! I don't have any more vibrations at high speeds or 2500-3500 RPM. I thought that I would need to replace the engine and tranny mounts but the problems solved. Check your tires. :werd:
 
#25 · (Edited)
legend4life95 said:
I have the same symptoms right now and took it to the shop today thinking it was the axel shaft(left). He said he saw nothing wrong. I have the vibrations only when accelerating and I also here a chirping squeeking type noise when I let up from accelerating but don't take my foot completely off the gas. I'm stumped and now thinking it could be a tranny mount. I'm getting frustrated :mad:
Alright - that above seems to be me talking. My car is going in tomorrow to the Acura dealer - I'll ask them too, but I was wondering if I could get some feedback from you guys first. It's a 1992 Legend Coupe w/ 63k miles.

1)I hear that chirping/squeeking/rattling noise during SLIGHT accelerations around 1.50-2.5RPMS and ONLY at low speeds (15-34mph). This has been going on for a while (about 2 months) but it has just been a noise so I've been blowing it off.

2)Now today I noticed the car shakes (seems like its from the front end) between 45-80+ mph. You can REALLY feel it between 60-80+ (haven't tried above 80). I also am putting on new tires tomorrow (and getting a coolant flush because my temp guage seems to rise often - while I read through the overheating forum with much frustration).

What should I have them check? Motor mounts? Is it just the tires (those are getting replaced - but that squeeking noise??)? Tranny Mounts (sounds like that from the thread)?

I don't know if #1 is related or not to #2 - I found this thread on #1 but #2 either way NEEDS to get fixed - http://www.acura-legend.com/vbulletin/showthread.php?t=56852

Please let me know. I'm certainly not a rich person and I can't afford to diagnose and fix everything (probably like 90% of the rest of this forum).

Thanks so much for your help in advance!
 
#26 ·
Help! Please???

Sorry, just bumpin this back to the top. Car is going in TODAY - I read through again - I am 50% thinking (AND BEGGING) its tires cuz I have all new tires in the trunk they are going to be putting on and 50% it is a mount - but maybe even brakes rubbing? It doesn't shake at all when I brake though, and it shakes ONLY during acceleration above 45 mph