Mystery Vibration..Help

back2fox

Member

Oct 7, 2006

73

0

6

Oct 17, 2006

#1

• Oct 17, 2006

• #1

'86 Mustang GT
When I bought the car it had a nasty vibration. You can feel it in the shifter around 3K rpm's and above in neutral. While driving it is worse at the same rpm's in first and second gear but seems to be less throughout 3th, 4th, and
5th.
Here is what I have replaced so far: Harmonic balancer, tranny mount, driveshaft.

These parts did help a lot but it is still there. Any thoughts??

 

B

BullittAndy

New Member

Nov 9, 2003

139

0

0

Oct 17, 2006

#2

• Oct 17, 2006

• #2

-exhaust rubbing somewhere maybe.
-engine mounts
-engine miss

 

thehueypilot

Active Member

Feb 25, 2004

1,084

0

37

Medina,Tennessee

Oct 17, 2006

#3

• Oct 17, 2006

• #3

Maybe the clutch lost some of its disk (missing chunks of fiber disc or metal parts broken spring fingers) and is now out of balance?

 

back2fox

Member

Oct 7, 2006

73

0

6

Oct 17, 2006

#4

• Oct 17, 2006

• #4

BullittAndy said:

-exhaust rubbing somewhere maybe.
-engine mounts
-engine miss

Click to expand...

Engine runs great. Exhaust is fine. I'm sure it is in the tranny, but not sure what it could be. I was just wondering if anyone else experienced this type of problem.

I guess I will pull the tranny and atleast check the clutch.

 

W

wicked84gt350

New Member

Aug 20, 2006

113

1

0

West palm bech florida

Oct 17, 2006

#5

• Oct 17, 2006

• #5

check the flywheel it sound like it is out of balance or it my be warped.

 

M

marvizu

Member

Nov 20, 2000

31

0

6

Henderson, NV

Oct 17, 2006

#6

• Oct 17, 2006

• #6

Seems like a good place to put this. When I'm traveling around 55 mph or higher, if I let off of the gas, I get a pretty good vibration. When I get back on to the gas, it smooths out. What do you all think?

 

thehueypilot

Active Member

Feb 25, 2004

1,084

0

37

Medina,Tennessee

Oct 17, 2006

#7

• Oct 17, 2006

• #7

marvizu said:

Seems like a good place to put this. When I'm traveling around 55 mph or higher, if I let off of the gas, I get a pretty good vibration. When I get back on to the gas, it smooths out. What do you all think?

Click to expand...

Worn U-Joints or worn slip joint on drive shaft or worn ring gear and pinion.

 

5ive.oh

Founding Member

Feb 23, 2001

195

0

0

Rocky Mountain House, AB

Oct 17, 2006

#8

• Oct 17, 2006

• #8

There is a collar in the back of the tranny that will cause a vibration, you need to remove the driveshaft to check it though.