Clunking sound when braking - Ford Mustang Forum
 
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post #1 of 15 (permalink) Old 11-27-2012 Thread Starter
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Question Clunking sound when braking

So recently I started to hear a clunking sound when braking. Not when the brake pedal is pressed but when the car finally come to a stop. If I come to a nice smooth stop no sound but if Iím slowing down then press a little harder right as Iím about to stop I can hear a clunk as the car rocks forward then back again. Any ideas? The only recent work, about 3 weeks ago was to put on my winter rotors, pads, and tires. Everything was torqued properly but if not I canít see the caliper making this sound especially only at the very end when the car comes to a complete stop. Sound just started a few days ago. Thanks in advance.


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post #2 of 15 (permalink) Old 11-27-2012
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My guess is the "drive shaft slip joint".


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post #3 of 15 (permalink) Old 11-27-2012
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Can you duplicate it by jouncing the rear or the car, such as jumping up and down in the trunk? Can you duplicate it with the e-brake?
 
post #4 of 15 (permalink) Old 11-27-2012
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You're positive it's not just the pads making noise in the calipers? That is very common on these cars and nothing to worry about.
post #5 of 15 (permalink) Old 11-27-2012 Thread Starter
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Originally Posted by Grimace427 View Post
Can you duplicate it by jouncing the rear or the car, such as jumping up and down in the trunk? Can you duplicate it with the e-brake?
No, only when braking. Sounds and feels as though something is moveing forward and back again. Sound and feel is similar to that the drive shaft makes when changes gears quickly (slop in DS). But it happens only when brakeing.

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You're positive it's not just the pads making noise in the calipers? That is very common on these cars and nothing to worry about.
I don't think so, its loud and I can actually feel the clunk.

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post #6 of 15 (permalink) Old 11-28-2012
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Originally Posted by devildog1679 View Post
So recently I started to hear a clunking sound when braking. Not when the brake pedal is pressed but when the car finally come to a stop. If I come to a nice smooth stop no sound but if Iím slowing down then press a little harder right as Iím about to stop I can hear a clunk as the car rocks forward then back again. Any ideas? The only recent work, about 3 weeks ago was to put on my winter rotors, pads, and tires.
Iíd like to get this escalated to the customer service manager for your area, devildog1679. Please, make an appointment with your dealer and PM me with your mileage, VIN, dealer, full name, and best daytime number so I can help.

Deysha
post #7 of 15 (permalink) Old 11-28-2012 Thread Starter
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Iíd like to get this escalated to the customer service manager for your area, devildog1679. Please, make an appointment with your dealer and PM me with your mileage, VIN, dealer, full name, and best daytime number so I can help.

Deysha
Thanks, I first want to check a few things myself before I go into the dealer. If that doesnít work Iíll reach out to you.

Kona Blue 2012 GT Premium, Brembo, 3.73, AED Tuned, Corbeau CR1 seats with Harness, Koni Yellows, Steeda Sport Springs, Strano F/R adjustable sway bars, BMR LCA & PHB, Lethal O/R H, GT500 Axelbacks, Boss Pod w/ Prosport Gauges, Boss/CS F&R facsia'a, Goodridge SS lines, Boss Brake cooling ducts, Boss splitter, Roush side splitters, Saleen Grill. Mustang Dyno 379 HP & 371 TQ
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post #8 of 15 (permalink) Old 11-28-2012
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I had almost the same problem several years ago. Turns out that one of the nuts on the wheel came loose. That should be easy to check.
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post #9 of 15 (permalink) Old 11-28-2012 Thread Starter
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I had almost the same problem several years ago. Turns out that one of the nuts on the wheel came loose. That should be easy to check.
Damn, I totaly forgot that when I put one of my winter wheels on I was missing a lug nut so one of my rear wheels only has 4. Totally forgot about that. I was on my way to buy one that day and got side tracked then forgot all about it. Hope thats it. Thanks

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Thanks, I first want to check a few things myself before I go into the dealer. If that doesnít work Iíll reach out to you.
No problem! Thanks, devildog1679.

Deysha
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Was that what the problem was? I get clunking when coming to an abrupt stop, but it's obviously the 2 -> 1 downshift for me. Very harsh.
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I don't find a need to downshift from 2nd to 1st. You can take 2nd down to <10mph when braking/coasting and just roll to a stop in neutral.

On my car it feels like the transmission or driveshaft sort of half-disengages when you're in a gear under 1krpm. I notice it but it feels like normal operation. My Tacoma would have a "clunk" when coming to a stop. That was an automatic.
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post #13 of 15 (permalink) Old 11-28-2012 Thread Starter
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Quote:
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Was that what the problem was? I get clunking when coming to an abrupt stop, but it's obviously the 2 -> 1 downshift for me. Very harsh.
i removed one nut from front and added to missing rear. Will see if it fixes it. My noise occurs when coming to a stop in both gear or neutral.

Kona Blue 2012 GT Premium, Brembo, 3.73, AED Tuned, Corbeau CR1 seats with Harness, Koni Yellows, Steeda Sport Springs, Strano F/R adjustable sway bars, BMR LCA & PHB, Lethal O/R H, GT500 Axelbacks, Boss Pod w/ Prosport Gauges, Boss/CS F&R facsia'a, Goodridge SS lines, Boss Brake cooling ducts, Boss splitter, Roush side splitters, Saleen Grill. Mustang Dyno 379 HP & 371 TQ
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post #14 of 15 (permalink) Old 11-29-2012 Thread Starter
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The nut did not cure the issue. Will check under car and pads over the weekend. If nothing comes then I'll call dealer.

Kona Blue 2012 GT Premium, Brembo, 3.73, AED Tuned, Corbeau CR1 seats with Harness, Koni Yellows, Steeda Sport Springs, Strano F/R adjustable sway bars, BMR LCA & PHB, Lethal O/R H, GT500 Axelbacks, Boss Pod w/ Prosport Gauges, Boss/CS F&R facsia'a, Goodridge SS lines, Boss Brake cooling ducts, Boss splitter, Roush side splitters, Saleen Grill. Mustang Dyno 379 HP & 371 TQ
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Hi Devildog and all I know it has been over 3 years since this post was first initiated but I have exactly the same problem now with my 2012 automatic transmission mustang. I went to to the dealer since the car is still under warranty and they changed worn bushings in the differential but the sound is still there as I come to stop and although it does not rock the car in a way to move it but you can feel a push and shake from rear side.

Any input would be much appreciated. Thanks!

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