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  • SN95 4.6L Mustang Tech

Rattling Sound When Taking Off In 1st/2nd Gear

  • Thread starter Thread starter jasonh_86
  • Start date Start date Jul 7, 2012

jasonh_86

I
May 20, 2005
1,156
2
48
Arkansas
Jul 7, 2012
#1
  • Jul 7, 2012
  • #1
So, I've had a strange rattling sound the past couple months that has been bothering me. I finally pinpointed web it does it & it only occurs when I'm at low speeds & accelerating/taking off in 1st/2nd gear. Once I gain some speed & get going, it goes away. It doesn't do it when the car is sitting still out of gear when I give it some gas.

I do have the TR-3650 transmission with 109k miles on it, so I figured that might be useful info. Has anybody had this before or know what it could be?

It has the original clutch & all parts associated with the clutch/trans (except for Steeda Tri-Ax). Clutch slightly slips, but it's very rare - occurs only under hard acceleration in 1st/2nd gear before the car has had time to "warm up" & doesn't do it every time.
 

usaf_branham

15 Year Member
Oct 30, 2008
927
134
84
Boston
Jul 7, 2012
#2
  • Jul 7, 2012
  • #2
check your fluid level.

i had a perf shop swap out my clutch and do the tsb on tranny fluid level while it was there... ever since it has made that same noise your describing. about a month ago, i decided to double check it... it was a quart low from the tsb level. i added 1 quart and the noise has improved ten fold. its still there, but not nearly as noticable as before. my tranny is prolly f****d from driving it like i stole it for a year with only 2.8 qts of transmission fluid in it, which is prolly why it is still making some noise.

good luck.
 

Winters98GT

Whoop...whoop-whoop-whoop-whoop...GANGNAM STYLE!!!
Founding Member
Nov 29, 1999
5,520
1,291
224
H Town
Jul 7, 2012
#3
  • Jul 7, 2012
  • #3
I'd bet it is your cat back hitting your axle or another point of the suspension/ rearend. Happened on all 3 of my 2v cars.
 

jasonh_86

I
May 20, 2005
1,156
2
48
Arkansas
Jul 7, 2012
#4
  • Jul 7, 2012
  • #4
Thanks for the replies! I'll be checking both things soon (whenever I get a chance when it's not 100+ outside).

If anyone has any other suggestions or experience with noises like this, I appreciate all the suggestions/opinions I can get! Keep 'em coming and I'll keep checking things until I find out what it is.
 
S

Sherwin

New Member
May 20, 2012
18
0
1
Saskatchewan, Canada
Jul 7, 2012
#5
  • Jul 7, 2012
  • #5
I'm having a similar sound I think, though I can feel a knocking at times when I move from a stop. I wonder if my tranny cross member is getting loose?
 
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