What will cause vibration over 85 mph?

94Silverbullet

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Jan 3, 2003

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MD

Sep 20, 2004

#1

• Sep 20, 2004

• #1

It feels like it's in the Tranny or driveshaft. I have a TKO 500 and an aluminum driveshaft.

 

FrdMustangCpe

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May 27, 2004

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Sin City, NV

Sep 20, 2004

#2

• Sep 20, 2004

• #2

...A Speeding Ticket









Could be alignment or somethin, can you get a feel for where it is coming from? do the d/s bolts have thread lock? they could be backing out

 

94Silverbullet

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Jan 3, 2003

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Sep 20, 2004

#3

• Sep 20, 2004

• #3

you mean driveshaft alignment?

 

Legendary

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Oct 10, 2002

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City of Angels

Sep 20, 2004

#4

• Sep 20, 2004

• #4

Check the balance of your tires also.

 

bmorrisj

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Sep 26, 2003

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Buena Park, CA

Sep 20, 2004

#5

• Sep 20, 2004

• #5

motor/tranny mounts....my tranny sounded like a diesel truck before it grenaded....

 

FrdMustangCpe

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May 27, 2004

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Sin City, NV

Sep 20, 2004

#6

• Sep 20, 2004

• #6

94Silverbullet said:

you mean driveshaft alignment?

Click to expand...

im saying, when you bolted your driveshaft to the rear end, did you use thread lock on those bolts? if you did not, those bolts could be backing out causing a vibration and potentially your driveshaft coming out . has your car been doing this for awhile or did it just start?

 

94Silverbullet

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Jan 3, 2003

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Sep 20, 2004

#7

• Sep 20, 2004

• #7

FrdMustangCpe said:

im saying, when you bolted your driveshaft to the rear end, did you use thread lock on those bolts? if you did not, those bolts could be backing out causing a vibration and potentially your driveshaft coming out . has your car been doing this for awhile or did it just start?

Click to expand...

It was doing it before I got the aluminum driveshaft and now that I think about it, it was doing it before the TKO500 also. It drives me nuts!

 

8

87'GTstang

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Feb 16, 2004

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#8

• Sep 20, 2004

• #8

Wheel balance is about the only thing left if it isn't a bent driveshaft, bad U-joints, driveshaft mis-alignment, or a problem with a previous gear install or with the angle they were installed at (or something wrong in the differential period). Rest assured however it has nothing to do with your engine because it is not rpm-related..

 

M

mooktank

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Jul 7, 2004

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Sep 20, 2004

#9

• Sep 20, 2004

• #9

im willing to guess its not in your differential. Id check u joints, get your tires balanced and get an alignment and you should be set.

 

_jb_

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Mar 4, 2004

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Michigan, Berrien County

Sep 20, 2004

#10

• Sep 20, 2004

• #10

FrdMustangCpe said:

im saying, when you bolted your driveshaft to the rear end, did you use thread lock on those bolts? if you did not, those bolts could be backing out causing a vibration and potentially your driveshaft coming out . has your car been doing this for awhile or did it just start?

Click to expand...

Yeah those driveshafts are wicked when they come loose form the differential.

 

8

87'GTstang

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#11

• Sep 20, 2004

• #11

mooktank said:

im willing to guess its not in your differential. Id check u joints, get your tires balanced and get an alignment and you should be set.

Click to expand...

An aluminum driveshaft comes with new HD u-joints. Negative caster would cause a wheel shimmy as well.

 

Fishhawk

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Jun 10, 2004

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Michigan City, Indiana

Sep 21, 2004

#12

• Sep 21, 2004

• #12

If the vibration cycles in and out, it is drivetrain related. If its consistant from 85 MPH on then its tires. (Balance, Bad belt,... etc)