Upper Control Arm Replacement

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Old Apr 20, 2025 | 01:36 PM
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Upper Control Arm Replacement

I suspected my upper control arms bad on both sides.
I am about to order MOOG upper control arms from rockauto. Anyone had any experience with MOOG or TRQ upper control arm? Are they good?



Last edited by VictorTL; Apr 20, 2025 at 01:40 PM.
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Old Apr 21, 2025 | 06:08 AM
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MOOG is A NASCAR brand so they are good & reliable. I only go with TRQ as my cheaper quality brand of parts. Like my work truck I buy all TRQ parts since they are cheaper and I test them to see how long they actually will hold up.
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Old Apr 21, 2025 | 05:59 PM
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I'd recommend delphi but they are over double the price! Just make sure the ball joint comes with a cotter pin and not one of the stupid locknuts.
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Old Apr 21, 2025 | 08:24 PM
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I partially removed the upper control from the knuckle and the other end is still connected to the car body. I moved it around and it felt very firm and stiff as well as its ball joint. I did this on both sides. To me I think they are still good.
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Old Apr 24, 2025 | 09:58 PM
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From: Space Coast, FL
Originally Posted by VictorTL
I partially removed the upper control from the knuckle and the other end is still connected to the car body. I moved it around and it felt very firm and stiff as well as its ball joint. I did this on both sides. To me I think they are still good.
why did you think the upper arms were bad?
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Old Apr 24, 2025 | 11:20 PM
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Originally Posted by csmeance
why did you think the upper arms were bad?
because I could not isolated where the clunking comes from. Sway bar link , sway bar bushings, upper control arms, struts are all looks good. And lower ball joint are fine.
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Old Apr 25, 2025 | 02:45 PM
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I am in the same boat as you - drives me nuts.
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Old Apr 25, 2025 | 04:01 PM
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Originally Posted by subydude
I am in the same boat as you - drives me nuts.
The clunking noise on mines isn’t pronounced. It’s very subtle and only on the driver side.
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Old Apr 26, 2025 | 09:44 PM
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I just went Skunk2, but that was a while ago so not sure if they are available. But good luck
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Old Apr 28, 2025 | 07:06 AM
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Originally Posted by VictorTL
The clunking noise on mines isn’t pronounced. It’s very subtle and only on the driver side.

Re-torque your axle nut.



Better yet. You've recently done all this suspension work.... go back and re-torque every single nut and bolt that you've touched.
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Old Apr 28, 2025 | 04:09 PM
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Originally Posted by twokexlv6coupe
Re-torque your axle nut.



Better yet. You've recently done all this suspension work.... go back and re-torque every single nut and bolt that you've touched.

I did retighten the top bolts for the struts and the bolt connecting the folk to the LCA.

ok. I will look into the axle nut. Why would you think the axle nut is loose?

Last edited by VictorTL; Apr 28, 2025 at 04:13 PM.
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Old Apr 29, 2025 | 07:07 AM
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Disconnect your sway bar links.

Go for a drive. Did the clunking stop?

How many miles does the car have? A bad UCA is really easy to check for. Your factory UCA is superior to any aftermarket one. So make sure its bad before replacing it.
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Old Apr 29, 2025 | 12:47 PM
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Originally Posted by BROlando
Disconnect your sway bar links.

Go for a drive. Did the clunking stop?

How many miles does the car have? A bad UCA is really easy to check for. Your factory UCA is superior to any aftermarket one. So make sure its bad before replacing it.
Superior to even those skunk2 Megan racing camber adjustable type UCA’s?
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Old Apr 30, 2025 | 09:34 AM
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Originally Posted by BROlando
Disconnect your sway bar links.

Go for a drive. Did the clunking stop?

How many miles does the car have? A bad UCA is really easy to check for. Your factory UCA is superior to any aftermarket one. So make sure it’s bad before replacing it.
137k miles

So it is safe to drive with BOTH end links disconnected?
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Old May 1, 2025 | 10:04 PM
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UCA ball joints will make clunking if you go from R to D and listen carefully.

Did you confirm the compliance bushings are good?
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Old May 2, 2025 | 08:39 AM
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Originally Posted by whitetiger5
UCA ball joints will make clunking if you go from R to D and listen carefully.

Did you confirm the compliance bushings are good?
I checked the UCA (both sides) by removing their ball joints from the fork while they were still attached to the unibody. I wiggled, pushed and pulled on the UCA anti it ball joint with all my strength they were rock solid and very stiff.

And then I completely removed the end links. The end links feel very stiff and no play. I wiggled the sway bar when the end links were removed again it felt rock solid and very stiff on the bushings .
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Old May 4, 2025 | 11:33 PM
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if the UCA ball joint is not Jiggly, then I doubt it is the clunking source. I replaced mine years ago and didnt solve a thing. In fact, I bought a UCA from Autozone, I think it was duralast, and it was too wide!! It did not fit. I had to put my oem one back on. It was about 1/4" wider. And it simply would not fit in the space on the body. It totally blew me away. I took at back and got a return.

But I have had a clunking noise for about 5 years on the drivers side too. I wonder if 1 or more of the 3 transmission mounts are faulty?
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Old May 5, 2025 | 11:05 AM
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Originally Posted by Chad05TL
if the UCA ball joint is not Jiggly, then I doubt it is the clunking source. I replaced mine years ago and didnt solve a thing. In fact, I bought a UCA from Autozone, I think it was duralast, and it was too wide!! It did not fit. I had to put my oem one back on. It was about 1/4" wider. And it simply would not fit in the space on the body. It totally blew me away. I took at back and got a return.

But I have had a clunking noise for about 5 years on the drivers side too. I wonder if 1 or more of the 3 transmission mounts are faulty?
my next task would be removing both end links and do a test drive to see if the sway bar bushings .
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Old May 5, 2025 | 12:06 PM
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Originally Posted by VictorTL
my next task would be removing both end links and do a test drive to see if the sway bar bushings .
Is your car lowered? or with aftermarket springs?
One other thing I wonder about, Is it possible the axle can be bouncing in and out of the transaxle? I have heard some people say when they replaced the axles, the axles just pop out of the socket and they didnt think they were supposed to do that. I too have noticed that when I did my ball joints a few years ago. So, I dont know if the "range of motion" is changed when a TL is lowered or not, that may cause the axle to jiggle in the transmission socket.. whatever that is called.. It may not be called a transaxle.. I dont know. But I do remember when I put on those TEIN coilovers several years ago, "EVERYTHING" rattled on the suspension. haha It was so bad I had to take them off and resell them
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Old May 5, 2025 | 12:39 PM
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Originally Posted by E39
Superior to even those skunk2 Megan racing camber adjustable type UCA’s?
Yes.

The adjustable ones are adjustable...so they have more features.

Skunk2 balljoints are known to fail pretty quick. They're low profile, though, so if you have a car whose camber you need to adjust because of some other mod, then you're usually accepting that "this is as good as it gets".

If you're just considering a replacement for the sake of maintenance, the best part in the world is the factory arm.
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Old May 5, 2025 | 12:44 PM
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Originally Posted by VictorTL
137k miles

So it is safe to drive with BOTH end links disconnected?
Yes, you just won't have a working sway bar as soon as you disconnect even 1 link.
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