4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Noisy LCA

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Old Aug 1, 2025 | 07:54 PM
  #1  
crazyone64's Avatar
crazyone64
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From: Ontario
Default Noisy LCA

I had my 03 mach1 looked at by a mechanic and I mentioned a loud clunking noise over cracks/bumps, coming from the rear/center. He mentioned he had my LCA on his Mustang and the LCAs are the culprit. I've replaced most if not all suspension parts and bushings.

It's pretty annoying. They're about 4-5 years old, don't think they've seen more than 5k miles.

I have a pair of 79-04 Mustang Pro Street Chrome Moly Lower Control Arms

Why would this be happening? and how to resolve?

Last edited by crazyone64; Aug 1, 2025 at 07:58 PM.
Old Aug 3, 2025 | 04:18 PM
  #2  
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Derf00
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From: AZ
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Originally Posted by crazyone64
I had my 03 mach1 looked at by a mechanic and I mentioned a loud clunking noise over cracks/bumps, coming from the rear/center. He mentioned he had my LCA on his Mustang and the LCAs are the culprit. I've replaced most if not all suspension parts and bushings.

It's pretty annoying. They're about 4-5 years old, don't think they've seen more than 5k miles.

I have a pair of 79-04 Mustang Pro Street Chrome Moly Lower Control Arms

Why would this be happening? and how to resolve?
noise from rear center would imply the differential support bushings, not the arms. The bushings are located on either side of the differential. Above the axles.Towards the driveshaft side

If any bushings are delrin or polyurethane, they will be noisy. Thats the price you pay for stiffer bushings, noise.
Old Aug 6, 2025 | 06:40 PM
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crazyone64
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From: Ontario
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What would the alternative to poly bushings be? I dont like the noise
Old Aug 11, 2025 | 11:51 PM
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Derf00
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Originally Posted by crazyone64
What would the alternative to poly bushings be? I dont like the noise
if you don't like noise, oem or any standard rubber bushing.
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