Chirp noise in rear suspension - Mustang Evolution

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Old 06-18-2013, 02:36 PM   #1
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Chirp noise in rear suspension

It's a 2010 gt with 18k. Almost every time I hit a bump in the rear I hear a loud chirp in the suspension. I don't see anything loose or worn. Do you guys think the rear lower control arms are suspect?
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Old 06-18-2013, 03:02 PM   #2
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Could be the rubber bushings need grease perhaps. Just dried bushings sounds like. I would start there first.
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Old 06-18-2013, 05:53 PM   #3
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The car is also completely stock. I'll try and lube the bushings. Thanks
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Old 06-19-2013, 07:03 PM   #4
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GRUNT/CREAK/SQUEAK/CHIRP NOISE FROM THE LOWER CONTROL ARM BUSHING OVER BUMPS— BUILT ON OR BEFORE 8/3/2009 FORD: 2005-2010 Mustang ISSUE Some 2005-2010 Mustang 4.0L/4.6L, 2007-2010 Mustang Shelby GT500 vehicles built on or before 8/3/2009 may exhibit a grunt/creak/squeak/chirp noise from the lower control arm hydro bushing. The grunt/creak noise may occur over large vertical bumps like speed bumps and pot holes. The squeak/chirp noise may occur over bumps rough roads, and driveway approaches. ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE 1. Use chassis ears on the lower control arm hydro bushing bracket tabs to verify noise is coming from the hydro bushing. a. If the noise is confirmed, then proceed to Step 2. b. If the noise is not confirmed, then this procedure does not apply. Proceed with normal Workshop Manual (WSM) diagnostics. 2. Late production lower control arms were equipped with a 0.75′′ (19 mm) ball joint shaft and improved hydro bushing. Early production vehicles used an 0.71′′ (18 mm) ball joint shafts. Using a suitable caliper measure the ball joint shaft. a. If the measurement is 0.75′′ (19 mm) this procedure does not apply and follow normal diagnostics in WSM Section 100-04. b. If the ball joint shaft measures 0.71′′ (18 mm) an improved service lower control arm with improved hydro bushing is available. Follow WSM section 204-01 to replace. WARRANTY STATUS: PART NUMBER 9R3Z-3078-A 9R3Z-3079-A AR3Z-3078-A AR3Z-3079-A NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates.The most recent information is available through Ford Motor Company’s on-line technical resources. Copyright  2009 Ford Motor Company Online Publication Date December 2, 2009 PAGE 1 OPERATION DESCRIPTION 092416A 2005-2010 Mustang: Replace One (1) Lower Control Arm, Includes Time To Diagnose (Do Not Use With Any Other Labor Operations) 092416B 2005-2010 Mustang: Replace Two (2) Lower Control Arms, Includes Time To Diagnose (Do Not Use With Any Other Labor Operations) DEALER CODING CONDITION BASIC PART NO. CODE 3078 12

I found this TSB but my car was built 10/09. But I think this is the noise I'm hearing.
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Old 06-19-2013, 07:55 PM   #5
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Maby this will help
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Old 06-19-2013, 09:23 PM   #6
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Thanks Montreal that's great info!!. What book is that info from?
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Old 06-19-2013, 10:38 PM   #7
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From the 2005 ford workshop manuel.hope you find that noise.
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Old 06-20-2013, 01:06 PM   #8
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montreal has some good tips OP! Although, I'm willing to bet it's your control arm bushings. They seem to wear the quickest and your Mustang fairly new.

Good luck!

Shane
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Old 06-21-2013, 05:49 AM   #9
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Quote:
Originally Posted by AMShaneLesky View Post
montreal has some good tips OP! Although, I'm willing to bet it's your control arm bushings. They seem to wear the quickest and your Mustang fairly new.

Good luck!

Shane
Are you saying maybe its the front control arm bushings? Or the rear bushings?
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Old 06-21-2013, 01:36 PM   #10
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Quote:
Originally Posted by Mustangmanny View Post
Are you saying maybe its the front control arm bushings? Or the rear bushings?
I was speaking of the rear control arms. Usually the LCA's are the weak link in the rear suspension as far as wear goes..

The sound is coming from the rear, correct?

Shane
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Old 06-21-2013, 06:36 PM   #11
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Yes it sounds like its coming from the rear suspension.
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Old 06-21-2013, 08:31 PM   #12
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The T.B.S. You fond is for the front LCA Go to you tube and check mustang gt 2012 lower controle arm bushing noise.is that the noise
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