popping sound in front suspension
i don't know if anyone else has had experience from time to time depending on what type of bump it is; my front suspension makes a popping sound, almost sounds like the struts. any suggestions on what it might be?
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gremlins
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Is it stock?
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What do you have done to your car at the moment? The upper strut mount/spring perch can make noise under certain conditions.
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rolnslo, i read the link you gave me and its totally what i'm experiences. i just wasn't sure if i was the only one. it only does it when i'm driving slow and depending on how i hit the bump it sometimes feels like my front end is going to fall off.
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If it's bad enough that it feels like the front end is going to fall off, have you taken the car to the dealer for diagnosis? A little rattle here and there may not be a big deal, but if it's big enough you can feel it through the floor boards or steering wheel it may be a good time to get it diagnosed!
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Jack it up and give the sway bars a firm strong jiggle on all ends one at a time. Loose sway bar end links sound like loose struts or bad ball joints. The noise will drive you crazy over bumps. |
I don't want to depress you guys but this noise is a by-product of the upper strut mount design and is not fixable by simply changing a strut or strut mount.
http://www.bmrsuspension.com/ForumIm...ront_strut.jpg Unlike most strut vehicles with bolt-in upper strut mounts, the Zeta platform uses a floating upper mount. The mount literally just sits in place using the weight of the car to hold it there. Those funny looking formed washers in the engine bay that stick up 1/2" above the strut towers are the strut retainers. If they were not there, the struts would literally fall out if you jacked the car up. What happens when you go over bumps, washboards, potholes, etc. is that the strut rebound valving does not allow the strut to extend quickly enough to compensate so the entire strut assembly falls down out of the strut tower slightly. This creates the noise everyone is hearing. It is not dangerous by any means but it is definitely annoying. Ultimately the design itself needs to be changed or the problem will continue. This would have to include changing the design of the strut tower itself as well as the strut mount. I doubt GM will do any more major re-designs with the Zeta platform but hopefully this issue will be resolved with the upcoming Alpha platformed Camaros. Keep in mind this is a completely different issue from the earlier upper spring isolator service bulletins. The issue being discussed generally only happens while driving over speed bumps, transitions, rough pavement, etc. |
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that was helpful. Many have experienced this same thing. Start by checking the end links. Then continue to talk to the dealership. If nothing else contact a regional dealer rep. for more help. |
Mine does the same thing. Typical Chevrolet garbage basically. Everytime I read a thread on this, I get pissed. Not at the op, but at Chevrolet. Because my car sounds like a piece of shit when I'm going down the road to my house.
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Subject:Front Suspension Thump or "Loose Lumber" Noise
Models:2010-2011 Chevrolet Camaro The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern Some customers may comment about suspension noise coming from the front of the vehicle when driving at low/moderate speeds (16-40 km/h [10-25 mph]) over rough roadway surfaces (cracks, lightly broken surfaces). The sound has been described as a rattle, knocking, clunking or "loose lumber" noise. This sound should be of a relatively low volume and behave as a brief rumble or thud following impacts with rough roadways. The sound is non-metallic in nature and has a dull wooden character. The "loose lumber" sound exists as a result of the basic component configuration and tuning that effect the ride, handling and steering of the vehicle. Recommendation/Instructions When a customer brings in a vehicle with front suspension noise, upon confirmation of the sound via a test drive, a brief inspection of the front suspension should be conducted (fastener torques, bushing/ball joint health). If no issues are found, the technician should confirm that the sound is/is not typical for the Camaro. (If needed, drive another Camaro and note the sound quality over small impacts.) If the sound is common in character with that of other Camaros, the customer should be informed that the vehicle is operating as intended and that the "loose lumber" sound is a normal suspension sound. Warranty Information If the noise is found to be a normal condition, please submit labor operation E9995 (Customer Concern Not Duplicated -- Tires, Wheels, Suspension and Steering); otherwise, utilize the labor operation for the repaired or replaced component. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION © 2010 General Motors. All rights reserved. Quote:
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We believe there is a fix and Pedders has made it available on this forum for some time. We have seen similar issues with the G8. We have watched as GM replaced the lower control arm and radius arms under warranty only to have the same noise come back. We have fixed them by tightening appropriate fasteners. The G8 did see CA and RA ball joint failures. This is due to the nature of the G8 ball joint finish. It is a course finish ball that depends on the 'dimples' in the finish to hold grease. When the lubrication is less than ideal the ball rubs against the nylon fingers creating a noise similar to a baseball card in the spokes of bicycle wheel. Replacement Pedders arms have a high polish finish and are 1mm larger than OE for the G8. Chevrolet for the Camaro improved the ball joint and that is NOT a problem on the Camaro. Similar to the G8, the Camaro does develop noise when the strut assembly nut is not tight, endlink nuts are not tight, control arm nuts are not tight and radius arm nuts are not tight. Quote:
GM Executive Center Detroit: 313-667-7153 Finally, if none of this brings you closer to a quiet Camaro feel free to call Pedders. We will work with you in every way possible including speaking directly to your local Chevy Dealer. 248.522.8021 Hit the print button. Visit your dealer and let us know how things go :chevy: |
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