• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Rear end noise over speed bumps

  • Thread starter Thread starter Maxium
  • Start date Start date Jun 22, 2011

Maxium

Member
Jul 22, 2009
33
2
9
Jun 22, 2011
#1
  • Jun 22, 2011
  • #1
Hey guys, I get a rear end noise going over bumps or holes, but is most easily replicated over speed bumps. It's a high pitched metallic clunk. More like a "pliiiing" almost like tapping the exhaust pipe with a wrench. I've checked the clearance of the exhaust over the rear end/ under the body and it looks ok. I've also double checked the bolts for my control arms and sway bar. I just can't figure it out. If you could imagine a tire rolling over a speed bump, it makes the noise on the initial hit of the bump and then again on the downward slope of the bump (if that makes sense/helps). I was just wondering if you guys could help me brain storm. Thanks.
 

txredgt

10 Year Member
Oct 26, 2009
1,343
33
69
Jun 22, 2011
#2
  • Jun 22, 2011
  • #2
Any suspension mods or subframe connectors on the car?
 

Maxium

Member
Jul 22, 2009
33
2
9
Jun 23, 2011
#3
  • Jun 23, 2011
  • #3
Yes, it's lowered with eibach pro kit, Tokico blue struts/shocks, MM subframe connectors, MM LCA, and FRPP UCA.
 

N8Dogg98

15 Year Member
Apr 4, 2005
3,872
238
184
MN
Jun 23, 2011
#4
  • Jun 23, 2011
  • #4
Don't go over speed bumps anymore







Just messin with ya... I had this same problem after I installed FLSFC's but it only happened when I turned right. Turns out my MAC mufflers were really close to the SFC on the left side. I loosened everything up and adjusted the exhaust and the noise went away. It was the same exact type of sound you are describing. The exhaust could be hitting the axle tubes, mufflers could be hitting the SFC's, etc... what kind of exhaust do you have?

Can you jack the car up and support the rear by placing jack stands under each end of the axle tubes so the suspension is loaded back there? Once that is done, get under there and start trying to move the exhaust pipes around by hand and see if you can replicate the noise. Be careful though, and ensure your jack stands are good and sturdy before you get under there and start tugging on the exhaust.
 

Maxium

Member
Jul 22, 2009
33
2
9
Jun 23, 2011
#5
  • Jun 23, 2011
  • #5
Hey, thanks for the response. I wish I could never go over speed bumps! But yah, I figured it was something to do with the exhaust. I have stock mid-pipe (that I would love to replace with a aftermarket catted one) and weld in flows. I've tried before doing what you suggested but unfortunately there isn't much play from the cats back. Perhaps the motor needs to be adjusted at the mounts? Unless there's another way to adjust the exhaust positioning that I'm missing. Not a big deal I guess, but little noises like that bother me and it's kind of embarrassing.
 

paintballpyro1

Active Member
Jan 6, 2004
118
1
29
Michigan
Jun 27, 2011
#6
  • Jun 27, 2011
  • #6
Only thing i could suggest is check your control arms bolts again. I had the same problems with going over bumps couldnt find the noise and i would jack my car up and couldnt find anything. Well last weekend i jacked it up on the rear axel and found the the bolts were loose. the only reason i couldnt ever tell was because i was lifting from the body and putting pressure from the axle onto the bolts and so when i lifted from the axle there was no pressure.
 

Maxium

Member
Jul 22, 2009
33
2
9
Jun 28, 2011
#7
  • Jun 28, 2011
  • #7
Hmm, I may have to try that method and check the bolts again then since I've always tried to load the axle up when tightening the control arm bolts. Thanks for the suggestion.
 
Z

ZX3V8

New Member
Jun 27, 2011
6
0
0
Jun 28, 2011
#8
  • Jun 28, 2011
  • #8
I hear that noise all the time in the 05-08 CVPI squads we have. I had the mechanic look into it on mine, and it was a heat shield in the back hitting one of the tailpipes. It sure as hell is annoying, especially when you're driving on crap roads for a full 8-12 hour shift!
 
You must log in or register to reply here.

Similar threads

S
Differential noise over bumps
  • sharkrat
  • Apr 10, 2026
  • 2005 - 2009 Specific Tech
Replies
3
Views
166
2005 - 2009 Specific Tech Jun 18, 2026
TPony
S
08 Mustang gt high pitched noise from rear
  • sainto
  • Jun 30, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
232
2005 - 2014 S-197 Mustang -General/Talk- Jun 30, 2025
sainto
S
M
Engine Unexplainable Exhaust Pop and Gurgle
  • Mrnissen122
  • Feb 14, 2026
  • Fox 5.0 Mustang Tech
Replies
12
Views
560
Fox 5.0 Mustang Tech Feb 18, 2026
Noobz347
A
2001 Mustang GT, scorched metal smell and noise from trans/diff?
  • AndyE2255
  • Dec 1, 2025
  • SN95 4.6L Mustang Tech
Replies
4
Views
458
SN95 4.6L Mustang Tech Dec 28, 2025
gkomo
Considering widening my rear wheels, would like to verify my thoughts on fitment
  • 2000xp8
  • Jul 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
20
Views
389
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 15, 2026
FastDriver
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?