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Sway bar bushings replacement - how difficult?
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01-27-2012, 08:30 PM | #1 |
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Sway bar bushings replacement - how difficult?
Hey folks,
Had a squeaky noise in the right rear. Took the car to the dealer for inspection and they found that a sway bar bushing was twisted and making the noise. They recommended a replacement. Since the CPO does not cover it they quoted $315 for the repair. I am not familiar with this mechanism but thinking if it is DIY possible. Could some more knowledgeable tell me me how difficult is the repair for DIY? Or, if there is a topic on this, please share a link. \'07 E92 335i. Thanks!
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01-28-2012, 12:07 AM | #2 |
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Is not very difficult if there is no rust between you sway bar and the old bushing. If there is, it will take more time to remove the rush/ repaint the sway bar than replacing the bushing.
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E93 335i Alpine White, 19" Works, PSS, M3 arms, M3 bushings,M3 E93 FSB/E92 RSB, powerflex rear diff bush.
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01-29-2012, 09:52 AM | #4 |
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I couldn't find anything for e92 but you can refer to link below (it is for MB but should be similar). Actually, you should try to quote from other mechanics the cost should be much less.
Btw I am responsible if you mess it up. Good luck. http://www.benzworld.org/forums/w210-e-class/1509104-rear-sway-bar-links-removal-replacement.html
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E93 335i Alpine White, 19" Works, PSS, M3 arms, M3 bushings,M3 E93 FSB/E92 RSB, powerflex rear diff bush.
AST 5100 with M3 rear camber arms. GC street plates. |
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01-29-2012, 09:55 AM | #5 |
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Haha typo. It should be " I am not responsible if you mess up your car"
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E93 335i Alpine White, 19" Works, PSS, M3 arms, M3 bushings,M3 E93 FSB/E92 RSB, powerflex rear diff bush.
AST 5100 with M3 rear camber arms. GC street plates. |
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01-29-2012, 10:06 AM | #6 |
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I'm confused as to why CPO is not covering it? The bushing is not a wear item, and would not normally need to be replaced.
Replacing it means dropping the rear sub-frame. It's not technically difficult, but takes time and you do need a garage with the right tools. Here's the DIY: http://www.e90post.com/forums/showth...highlight=sway |
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01-29-2012, 10:16 PM | #7 | |
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"Upkeep ItemsIs seems to me like they could treat any suspension related problem as excluded from CPO. Am I understanding this right? Could anyone clarify this to me? |
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01-30-2012, 09:52 AM | #8 | |
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While you're in there, why not replace rear subframe bushings? You'll be SO glad you did. A simple affair w/HP Autowerks' tool and you can order bushings from 'em too. Deep[ socket w/pneumatic impact wrench recommended. |
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01-30-2012, 12:03 PM | #9 | |
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01-30-2012, 12:05 PM | #10 |
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Also, do I need to replace the bushings on the other side as well? Dealer wants to fix only one side, but my friend argued that this has to be done in pairs. Who's right?
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01-30-2012, 09:09 PM | #11 | |
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And yes both sides should be replaced, besides that the other side could now be compromised, you want them to have the same stiffness, otherwise the car will be unbalanced. The bar will need to come out regardless, and it is quick to replace the other side also. |
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02-01-2012, 01:32 PM | #13 | |
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Really not the difficult job it's been made out to be. Neither is sway bar replacement, with subframe dropped. Easy, in fact, with the right tools. Did my bushings & sways in my garage too. Had heard from everyone that the M sway's a bitch to install. Not so! Bushings w/HP Autowerks tool a piece o'cake....use a pneumatic impact wrench for rapid progress. To your question: Yup, you must do it in left/right pairs or risk instability. You don't want instability. Last edited by CALWATERBOY; 02-01-2012 at 01:52 PM.. |
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02-02-2012, 02:35 AM | #14 |
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Update:
Took the car to the BMW certified indy shop and they replaced the bushings per dealership diagnose. The squeaking noise did not go away. Apparently - dealership misdiagnosed it. Any ideas where to look for the source of the squeaking? Maybe someone else had similar experience? More details: the noise is coming from the rear passenger wheel well. Especially loud on bumps or uneven road. Or, I can hear it when I push down the rear to bounce. Thanks guys. |
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02-07-2012, 03:03 PM | #15 | |
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There is a TSB in BMWs system that refers to squeaks over speed bumps occurring mainly when the weather is cold. They recommend replacing the sway bar bushings (in this case front) with "improved" parts. I am convinced that sometimes they just recommend this procedure based on the TSB without actually trying that hard to check other things also. But I guess if yours were deformed they needed replacing regardless... What kind of squeak is it? Sounds like metal on metal screech or squeal? Or is it more like a rubber on metal "toot". Is there also a clunk? I guess I'd have them look at all the other bushings in the rear suspension. How many miles are on your car? Did the handling at least improve with the newer, stiffer bushings in the back? |
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02-08-2012, 12:40 PM | #16 |
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Update:
Had the car diagnosed again. Here what they found: "Inspected the vehicle and inspected suspension. Was able to duplicate noise on alignment rack. Isolated noise to the right rear lower ball joint. Loosened bolt for ball joint on the right rear ball joint and noise goes away. Added lubricant to ball joint and need to give lubricant a couple days to work into joint. If noise is not gone after a week then a new ball joint will be needed." The car still squeaks. |
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02-08-2012, 01:30 PM | #17 |
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You know, Ive replaced sway bar bushings before for other cars and procedure was easy. 10 min job.
Remove the bushing metal cover, then remove bushing. Its sliced so you can remove it right there without removing the whole sway bar. Then repeat procedure for putting in the new one. I looked up for pictures of the parts in question and they look the same as all Ive worked on. So procedure might be the same. Cost for parts is about $10 for the pair, urethane (no need for lube, no squeak, longer lasting) Now the ball joint. Id expect the ball joint to clunk if its bad, not squeak. Replacing that will cost you a lot. Kinda as much as a wheel bearing replacement. I did this on a Jeep 2 months ago. |
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03-05-2013, 04:51 PM | #18 | |
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Thanks |
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03-06-2013, 03:04 AM | #19 |
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Agreed with 10 min job (minus getting car on ramps or lift, and fumbling to find correct sized sockets)
I ended up with urethane bushings with a molybdenum disulfide coating, got the bushings fro, UUC, this was on an E34, ended up with larger swaybars than the M5 touring, thing handled like it was on rails |
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03-06-2013, 03:14 PM | #20 |
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05-01-2015, 10:10 AM | #21 | |
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05-01-2015, 10:54 AM | #22 |
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I'm guessing he was referring to another vehicle. Sway bar bushings are either simple to swap or involve removing subframes. It appears the rear sway bar bushings on the E90 fall into the latter category.
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