Instability when passing over a bump

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Old 02-25-2015, 07:31 PM
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Instability when passing over a bump

I have a 2005 with 137k, and when passing through a bump over 45 mph feels instability in the rear.
It's feels like if the rear section slip to the side where the bump was.
Bad shocks?
Bad alignment?
Old 02-26-2015, 12:42 AM
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It's probably an alignment issue.
Get a four-wheel alignment, and have the toe set to "0" or as close as possible to it, on all four wheels.

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Old 02-26-2015, 05:43 PM
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Wasn't there a TSB for this?

Edit: NVM, that was the bump stop TSB for premature tire wear.

But yeah, OP, get your alignment checked. Do you have any load in the back seat and/or trunk?

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Old 02-26-2015, 06:14 PM
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No, just kids seat in the back seat and the trunk is empty. Someone tells me that could be something is broken, exactly Broken sway bar end links, but this "feeling just happend when the car reaches a certain speed.
what would be the recommended alignment for acura tl 2005?
Old 02-26-2015, 10:52 PM
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Originally Posted by emegge23
...what would be the recommended alignment for acura tl 2005?
The toe should be set to "0," or as close as possible to it, on each of the four wheels. Caster and camber are not conventionally adjustable.

This applies to all 3G TL models with stock suspensions and wheels (including A-Spec).

The tire shop/alignment place should have the specs too.
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Old 02-27-2015, 12:36 PM
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The struts are probably nearing the end of their useful life. If you don't see anything obviously broken, check your tires. What kind are they? Are they inflated properly? Are they showing signs of uneven wear?

I put new snow tires onto worn struts that gave me similar problems. Just put new Koni Yellows on and now everything is good.
Old 02-27-2015, 08:24 PM
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Originally Posted by jblessing
The struts are probably nearing the end of their useful life. If you don't see anything obviously broken, check your tires. What kind are they? Are they inflated properly? Are they showing signs of uneven wear?

I put new snow tires onto worn struts that gave me similar problems. Just put new Koni Yellows on and now everything is good.
Everything is stock in my Acura, I'll check the rear struts.
BTW, to replace this rear struts is necessary remove back seats?
Old 02-28-2015, 08:18 PM
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Bump
sorry...
Old 03-01-2015, 09:34 PM
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I would agree on the shocks. See if one isn't leaking. Just replaced mine as one was leaking and I had a similar 'uneasy' feel at times in the rear
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Old 03-01-2015, 10:03 PM
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Originally Posted by emegge23
Everything is stock in my Acura, I'll check the rear struts.
BTW, to replace this rear struts is necessary remove back seats?
yes, the back seats need to come out to access the bolts. It isn't that bad of a job to do, it just takes time.

If you haven't checked the alignment, you def. should first. After that, look into new shocks to replace the worn ones. You'll need to do an alignment after you put the new shocks in and the car settles.
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Old 03-02-2015, 10:57 AM
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I really doubt the issue is due to the rear shocks, but it doesn't hurt to them for leaks. But definitely get the alignment checked. I'm going to bet that camber and toe are out of spec on at least one side, if not both.
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