violent shaking...

diab0liK · Mar 26, 2005

I was driving a couple hours up to the casino on thursday.

First hour of driving was totally fine, no noticeable problems, then at about 80 mph or so, roughly halfway there, I got this brief shudder, felt like it was coming from the right front side maybe, and I thought it might be a loose wheel, or tie rod, or something of that nature (just had some new tires put on like 2 weeks ago). The problem didn't happen again for a few minutes, but I still got off at the next exit to check everything out. Wheel didn't seem to move around too much or anything, everything seemed fine, so I decided to get back on the road, and see if it happened again.

For the next 20 mins or so, it happened a couple of times, briefly both times though, but then at some point in time, it got bad.

--this is on a 95 eclipse gs, btw--

So I turned the car around, and limped it back home at about 55 the whole way (also not fun).

Basically, here's the symptoms:

Shudders very violently in 4th or 5th gear, but ONLY while accelerating (I can accelerate up to 80, and then let off the gas, and the problem immideately goes away, until I begin accelerating over 60 again). A friend of mine said he thought my synchros could be bad, it would seem to me it would have to be in the tranny, or something w/ the clutch/flywheel, based on the fact the problem is only while accelerating, I figure I can rule out the tie rods, etc.

Any suggestions are appreciated, just got this car a few weeks ago, and I'm already having serious problems...gotta love dsm's.

Thanks in advance

diab0liK

diab0liK · Mar 26, 2005

Oh, and the shuddering only happens at about 60+ mph, everything up to there is seemingly fine.

diab0lik

diab0liK · Mar 28, 2005

anyone have ideas?

I'm still thinking it's gotta be something in the tranny, and I think I'm going to have it looked at by TRE soon, but I'm afraid to drive it there as it is...

diab0liK

luv2rallye · Mar 28, 2005

Check tranny mounts. Also a non-tranny possibility: Try high rpms in lower gears. If shaking, suspect engine mounts.

evolvingGS-t · Mar 28, 2005

You're sure your tires were balanced correctly. I experience the same with both my EVO and GS-t until the tire company put on a couple more weights. Something to look at.

diab0liK · Mar 30, 2005

Yeah, I'm going to take the car back to crusty Belle Tire today, b/c one of the tires isn't holding good pressure.

However, I doubt it's the tires, since it only happens during acceleration, and if the tires were poorly balanced, I would assume it would just happen at high speeds regardless.

Oh, and no problems at high rpm's in lower gears, problem only exists at 60+ in 4th and 5th, and even then, it seems intermittent, possibly gets worse the longer I drive it, I'm not quite sure yet, since I'm afraid to really take it back on the highway.

diab0liK

luv2rallye · Mar 30, 2005

Two tires on same axel out of balance will give intermittent shakes as they go in & out of phase with each other. Also a bent wheel. If not balance/wheel problem check ball joints and tie rod ends for looseness (shake them hard with your hand).

diab0liK · Apr 1, 2005

Well,

I was at Belle Tire today, and they told me one of my wheels was slightly bent. Also, apparently my inner CV boot is torn, w/ some freeplay. They moved the bent wheel to the back, and I'm going to get the CV fixed soon. I seem to remember a recall involving the inner boot though....is that for turbo's only or not?

I'm planning to call the dealership tomorrow and see my recall status.

One of my tires wasn't holding pressure, so they bead sealed it, and also put a new valve stem on, I'm hoping that will fix the shaking issue for the time being.

other thoughts at all?

Thanks for the replies, dsm love

diab0liK

luv2rallye · Apr 1, 2005

No - the bent wheel will definately cause severe vibration and the looseness of a tie rod end may contribute.

diab0liK · Apr 1, 2005

I know the wheel would cause vibration, admittedly, I don't know how bent it is though, I've never noticed it before.

Anyway though, would a bent wheel explain vibration only while accelerating? It would seem to me that if the wheel was causing the vibration, it would be present at higher speeds, regardless of whether or not I was on the gas, whereas my problem ONLY occurs during acceleration. I could accelerate to 90, shaking, and then as soon as I let off the gas, coasting at 90, no problems whatsoever.

diab0liK

luv2rallye · Apr 1, 2005

Correct. A bent wheel would cause vibrations at all speeds - more the faster you go. Vibration on acceleration would most likely be engine/tranny mounts, propeller shaft center bearing or U-joints, or loose suspension or tie rod ends.

SimpleSecurity · Sep 22, 2005

I know this is an old thread, but I don't see a answer to the problem so I figured I would chime in. My car also does this only on acceleration and only above 60mph, but my car well do it in all gears, well 3rd and up. I have since replaced the 2 front tires, found out I have a bent wheel on one, but it doesn't effect the ride at any other time. I am going to be getting a new wheel next week, along with new powerslot rotors, and kyb agx. So I well post back if that changes anything. If anyone else has had this specific problem, violent shaking throughout car only above 60 mph, and under moderate to hard acceleration, please help.

also it shakes worse accelerating uphill, and barely shakes if at all accelerating downhill.

first post :thumb:

93eklipse15 · Sep 23, 2005

Mmkay. I've got a 93 Eclipse 1.8L N/T and I've got the same problem with the shaking. I bought new tires and had them balanced. I know one of my wheels is bent on the inner lip just a little, but it's so tiny I doubt it makes any difference. The shaking, of course happens after 60mph, but no less - And only when I give it gas. There are only a few things that I've heard consistent after the balancing and wheels: Axles (CV Joints?), Tranny mounts or engine mounts. Could be the tie rod ends, but I dunno. I'm 15, rather broke and not entirely intelligent with the 1G Eclipse just yet, which is of course why I'm here.

Now, when I bought the car and had looked the engine over, the lower engine(Shared with trans? Looks like an arm with a weird roller looking (Pivoting?) thing bolted to the bottom of the engine/trans. It looked straight and level. But recently, as the shaking has become less violent, which is really creeping me out, it looks sorta bent over to the left (From the engines perspective, but right from you looking down at the thing) This...kinda worrying me.
Check yours...have it checked...see if it's actually bent or if it's my imagination. If it IS deformed in some way on both cars, that could be the problem, but then again I could be completely off.

Don't forget to pick me up off the floor when I pass out if it turns out to be dramatically expensive. :notgood:

~!~Kahlyn~!~

http://www.cardomain.com/ride/2047471/1

SimpleSecurity · Oct 17, 2005

Update on my Shaking problem. :thumb:

Good news, I replaced my severely warped rotors and pads.....young driver before me did zero to no maintenance in the 2 years he had it. But that didn't stop the violent shaking while accelerating between 60 and 80 mph. So while i was saving for a new set of wheels (I've got a front left that is bent, and they don't make mine anymore) the shaking got progressively worse. I went under the car by the front left where the shaking seemed to be the hardest and originating, to see a torn CV boot. I also noticed some rust on the inside and along the shaft itself. So i went ahead and replaced it the CV shaft that is. Bingo no more shaking at all, besides slight shaking of steering wheel at all speeds, but barely noticeable...I'm assuming this is the bent wheel....but no more sodas rattling in the cup holder, and stuff in the glovebox rattling, and me turning the music up so loud to cover it, that i go deaf in a year.

93eklipse15 · Oct 19, 2005

So if I had this problem, that could be the reason that lower support arm thingy is bent over? Because it's causing strain on one of the wheels? :confused:

WTF

pullstart82 · May 20, 2008

mine started a couple weeks ago on a trip to upstate ny . . at first a little then a lot . . now its even under slow driving . . when i hit the gas into first its fine until about 2500 then i can actually here my motor kinda sound like its wobbling up and down with the motor . . . at first i thought it was crankwalk . . could that be a possiblity?

eclipsepunx · Feb 4, 2010

Man Diabolik I have the exact same issue. I also thought I could rule out suspension because it is only in high gear while accelerating. My theory is a warped flywheel although I baby my DSM because it is so sensitive. But i like the idea of it being a cv axle instead. So if I can get more confirmation on that, I will replace it. Let me know if you figure it out because I am selling mine and can't sell a bum car like someone did to me.

BIRDCLAWTSi · Feb 4, 2010

I have seen the axle be the cause of the vibration many times. I am a tech and i usually will put the car in the air and drive it on the lift. A bad cv joint will definatly cause this. Also , un balanced tires, A bad tire that the belts begin to seperate in, Bad tie rod, Ball joints, Control arm bushings,etc... Jack up the suspect side and shake the front end down. Grab the tire and shake it side to side and up and down, Just make sure the key is in the on position because if the steering wheel locks it will make it feel like there is something wrong. good luck.

ReYnd · Feb 5, 2010

eclipsepunx said:
Man Diabolik I have the exact same issue. I also thought I could rule out suspension because it is only in high gear while accelerating. My theory is a warped flywheel although I baby my DSM because it is so sensitive. But i like the idea of it being a cv axle instead. So if I can get more confirmation on that, I will replace it. Let me know if you figure it out because I am selling mine and can't sell a bum car like someone did to me.

Get under the car somehow and see if you can feel any play in the CV joints. If a boot is ripped, there's a good chance you just found your problem.

I highly doubt the OP will tell you, even if he did find the problem. His last post was made in 2006.

Nice looking kit you have there, though. Hope you get it all sorted out!

born2tune · Feb 5, 2010

try this: take your wheels off and check for that screw that is used to remove the brake discs, you cant miss it its either going to be there or you will just have an empty hole, and if its there your rims is not flush with the brake disc making it woble violently when it wobles in syncro with another bad tire.

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violent shaking...

diab0liK

diab0liK

diab0liK

luv2rallye

evolvingGS-t

diab0liK

luv2rallye

diab0liK

luv2rallye

diab0liK

luv2rallye

SimpleSecurity

93eklipse15

SimpleSecurity

93eklipse15

pullstart82

eclipsepunx

BIRDCLAWTSi

ReYnd

born2tune

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