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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

bad vibrations... rear end?

  • Thread starter Thread starter tach
  • Start date Start date Oct 5, 2004

tach

Founding Member
Jun 30, 2002
74
0
6
Moreno Valley, California
Oct 5, 2004
#1
  • Oct 5, 2004
  • #1
my 66 is shakey around 40mph it feels like its coming from the rear and also when its in drive and its moving on its own idle theres a lumpy feel coming from the rear. what could possible reasons?
 

Route666

Active Member
Aug 16, 2003
1,652
6
39
Brisbane, Australia
Oct 5, 2004
#2
  • Oct 5, 2004
  • #2
Your engine idles smoothly I assume?

Sounds like something is bent, a wheel maybe.
 
N

nds03

New Member
Jul 21, 2004
166
0
0
Oct 5, 2004
#3
  • Oct 5, 2004
  • #3
my car just started doing that at 80 then 70 then 60 then 40. ring and pinion seem to have a lot of slack in them. i figured theyve had it. i ordered a new center section with posi and 3.80's for my 8 off of ebay
 

reenmachine

20+ Year Stangneter
Jun 27, 2004
1,258
2
38
Montrose, CA
Oct 5, 2004
#4
  • Oct 5, 2004
  • #4
When you've got the axles loose to change the 3rd member, check them for straightness.
 

WORTH

20+ Year Stangneter
Nov 18, 2002
2,166
44
98
Cape Cod, Ma.
Oct 5, 2004
#5
  • Oct 5, 2004
  • #5
tach said:
my 66 is shakey around 40mph it feels like its coming from the rear and also when its in drive and its moving on its own idle theres a lumpy feel coming from the rear. what could possible reasons?
Click to expand...

could be as simple as an out of round tire, maybe ply seperation, jack it up put it on stands and spin the wheels slow, look to see if they are still round.
 
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