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How To Diagnose Upper Spring Seats?


t8fanning

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I'm getting a creak in the front while turning or over bumps. I checked all my sway bar nuts, and everything is tight. I turned the top nut, and there was significant movement, and when released it went back to where it was.

This makes me think it's the spring seats. Any input? How hard is it to replace them?

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When you turn the top nut, I'm pretty sure it's normal for it to turn, since you're pretty much just working against the spring. When you take the top nut off, you'll see the rubber seat below it with the cross-nut still on. Bounce it around and check for any tearing.

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How much movement? (in inches)

I can turn the top nut 90°, but it turns right back to where it was.

When you turn the top nut, I'm pretty sure it's normal for it to turn, since you're pretty much just working against the spring. When you take the top nut off, you'll see the rubber seat below it with the cross-nut still on. Bounce it around and check for any tearing.

How do you take the top nut off? Do you have to compress the spring, or do you just unscrew it? I have no experience servicing struts.

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I use a 21mm socket on an electric impact wrench. It's the only way I've found to do it without twisting the hell out of the spring using a breaker bar.

With the impact, it zips right off. If you have to do it manually, it might be a bit of a bear.

Once you have the top nut off, remove the washer, then you'll see the cross nut. Don't remove this until you have the strut off the car. You'll either need a good pair of vise grips, or the special Volvo Strut Nut tool. FCP and IPD both sell aftermarket versions of this tool I believe.

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90 degrees is too much

It should not move much more than 1/2" or so

This means it's partially torn, pretty soon yiou will be able to spin it around which is totally busted

Replace them

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