('01-'02) Shaking while driving - Subaru Forester Owners Forum
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post #1 of 13 (permalink) Old 07-13-2013, 02:48 AM Thread Starter
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Shaking while driving

Hey guys.
So sometimes while I'm driving down the highway the car (which has done 210 000 km) will start to violently vibrate. Only really small movements and I can only feel it through the steering column.
I've had this happen to my last car but that was because it was a loose CV. I've checked all of them and they're fine. It only happens when I'm doing over 100km/h and at 3000+ RPM. So driving under 100km/h at 3000RPM is fine, it doesn't happen.
I was just wondering if anyone else had similar issues or any knowledge on what it could be.
Thanks in advance!

- Joel
MY02 Forester
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post #2 of 13 (permalink) Old 07-13-2013, 04:04 AM
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Could be an out of balance wheel or still your CVs. On a previous vehicle it did the same thing. They checked fine on inspection but when we replaced them and opened the boots, they were chewed up.

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post #3 of 13 (permalink) Old 07-13-2013, 05:06 AM
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Could be wheel balance it sounds like.

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post #4 of 13 (permalink) Old 07-13-2013, 05:10 AM
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It's not the other half shaking you to slow down..

sorry couldn't resist.lol
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post #5 of 13 (permalink) Old 07-13-2013, 07:00 AM
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Quote:
Originally Posted by jredd27 View Post
Hey guys.
So sometimes while I'm driving down the highway the car (which has done 210 000 km) will start to violently vibrate. Only really small movements and I can only feel it through the steering column.
You probably have two front tires, each of which is slightly out of balance. Or possibly one or the other has a slightly bent rim. Or, some combination of the above.

I keep saying 'slight' because this problem only occurs when both tires are in a certain relative position to each other. The tires probably have a slightly different rolling circumference - perhaps .2mm or .3mm difference. So, you drive down the road and every few miles it happens that the two tires are vibrating in sympathy. After a few more miles, the problem goes away, not to return until that specific alignment occurs again. If the road is not perfectly straight, the curves may delay (or accelerate) the occurrence of this problem.

No easy fix. Try adding a bit more air to one front tire or the other. You could try rotating the tires on one side of the vehicle front to rear. Or, rotate all tires front-to-rear. See if that the helps. It may not solve the problem but you won't notice it so much if the problem is on the rear.

With the tires unmounted, check the rims carefully for bends. Also check them for run-out - lateral and radial. This is frequently an issue on boat trailers, the manufacturers of which use the cheapest, crappiest rims known to mankind. They always get bent, out of round, etc.

With the tires unmounted, inspect the tires for a slipped or broken belt - sometimes it is visible as a bump or lump you can feel on the inside of the tire. If a tire has more than one patch, you might move it to the rear. Make sure you have no foreign objects inside your tires (rocks, bullets, etc.)

Have your tires balanced. Pay particular attention if a tire requires a lot of weight to balance. Also, note if a tire requires a large amount of weight on the inside or outside. Good quality tires in good condition should balance without the addition of much weight.

Basically, attention to details will solve the problem, but it may take a fair amount of effort.
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post #6 of 13 (permalink) Old 07-13-2013, 01:29 PM
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Do you feel vibration going 75 mph, but doesnt vibrate if you drive 60 mph. My forester is the same now?
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post #7 of 13 (permalink) Old 07-13-2013, 03:19 PM Thread Starter
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Quote:
Originally Posted by hyper gear View Post
Do you feel vibration going 75 mph, but doesnt vibrate if you drive 60 mph. My forester is the same now?
Yeah thats right mate

And thanks so much guys for all your help, I'll be buying new tires very soon, so after a decent balance, hopefully that'll go away. Cheers

- Joel
MY02 Forester
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post #8 of 13 (permalink) Old 07-13-2013, 05:01 PM
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So is the tires, or it needs balancing?
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post #9 of 13 (permalink) Old 07-13-2013, 05:03 PM Thread Starter
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I think it's the tires. Ive just had a look and they're not actually the same tire?! Only the back two tires are the same so its probably this. Like I said, im getting new ones soon so hopefully it'll go away.

- Joel
MY02 Forester
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post #10 of 13 (permalink) Old 07-13-2013, 05:54 PM
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I just changed the tires on my forester, i just do balancing first!
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post #11 of 13 (permalink) Old 10-27-2013, 08:55 PM
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Hi Guys,

I was reading this forum and saw some have or hopefully had by now a similar problem to me....... let me begin......
I have a 2002 Forester standard non turbo edition, I seem to find that it does like a hopping motion (for lack of better way to describe that) when I am driving faster than 60hm/h and it gets worse and worse the fast I go, at 120 its almost terrifying!

I have replaced all 4 type with new ones had them balanced and aligned, I have replaced the oils in the diffs (front and rear) the transmission fluid the engine oil and replaced all filters. I did the oils incase it was a drive train or engine related but ......yes wait for it!......Nothing has help or changed at all.

help me please......

Brett
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post #12 of 13 (permalink) Old 10-27-2013, 10:09 PM Thread Starter
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Quote:
Originally Posted by futter View Post
Hi Guys,

I was reading this forum and saw some have or hopefully had by now a similar problem to me....... let me begin......
I have a 2002 Forester standard non turbo edition, I seem to find that it does like a hopping motion (for lack of better way to describe that) when I am driving faster than 60hm/h and it gets worse and worse the fast I go, at 120 its almost terrifying!

I have replaced all 4 type with new ones had them balanced and aligned, I have replaced the oils in the diffs (front and rear) the transmission fluid the engine oil and replaced all filters. I did the oils incase it was a drive train or engine related but ......yes wait for it!......Nothing has help or changed at all.

help me please......

Brett
Hey Brett. Yeah I had a similar problem with my previous car. I did all those things only to find out it didn't help or change anything. I was because of a loose CV joint. The bearings had actually shattered and were ratting around inside the boot. If you're able to, get under your car and check the CV arms and boots. If they move and rattle heaps, chances are its because of that.

I was able to buy one at the wreckers that had done 100,000km less than mine so I replaced it. It wasn't easy but it saved a heap of money. Not to mention it drove a heap better!

This is a picture of it inside the boot:



Hope this helps mate

- Joel
MY02 Forester
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post #13 of 13 (permalink) Old 10-27-2013, 10:10 PM Thread Starter
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Quote:
Originally Posted by MikeDrives1 View Post
Could be wheel balance it sounds like.
I got a balance when I got my new tires the other week. Fixed it, its so much better now, cheers

- Joel
MY02 Forester
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