HELP! bad vibration

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 26, 2007

#1

• Aug 26, 2007

• #1

I am having a bad vibration when I get up around 60 plus? It doesnt matter what gear im in and its not my tires??? I was thinking driveshaft or yoke or u-joint??? help me out

 

squeak93

15 Year Member

Jun 2, 2005

2,256

358

164

Joplin, Missouri

Aug 26, 2007

#2

• Aug 26, 2007

• #2

Most likely the u joints. Have they ever been replaced???

If not do it soon. Losing a drive shaft on the hwy can get u hurt or killed!

 

88mouse

New Member

Apr 18, 2007

630

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Mooresville nc

Aug 26, 2007

#3

• Aug 26, 2007

• #3

Where do you feel it at in the steering wheel or the bottom of the seat?

 

7

71swing

Member

Aug 18, 2006

199

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17

Omaha,NE

Aug 27, 2007

#4

• Aug 27, 2007

• #4

88mouse said:

Where do you feel it at in the steering wheel or the bottom of the seat?

Click to expand...

Good Question:

It could just be a unbalanced tire.

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 27, 2007

#5

• Aug 27, 2007

• #5

its not the tires for sure, and the vibration is coming from under the seat.

 

88mouse

New Member

Apr 18, 2007

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Mooresville nc

Aug 27, 2007

#6

• Aug 27, 2007

• #6

Start off by checking the u-joints. If not there i would say a bad bearing in the rear end. Why are you so sure that its not a tire vibration? Friend of mine just had two front tires put on and balanced, took the wheels home and put them on the car and took off down the road, could hardly hold the steering wheel it was so bad. So i took them up to where i work and check the balance one was out by 4 1/2 oz and the other was out by 1 1/2oz. So just because you just had them balanced or what not don't rule it out.

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 27, 2007

#7

• Aug 27, 2007

• #7

Oh I know what you mean, but my best friend owns a tire shop and he just checked them for me again on saturday. Question, If the drive shaft is taken out and not marked and then put back in not in the same position would that throw it off?

 

cenok is family

15 Year Member

Jun 25, 2003

1,409

69

79

Norman, Ok

Aug 27, 2007

#8

• Aug 27, 2007

• #8

my car does the same thing 'cept it starts around 70-75ish. i'm about 90% sure it's my u-joints. i'm just gonna get an aluminum driveshaft though, don't wanna waste the money on u-joints just to turn around and get a new driveshaft.

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 27, 2007

#9

• Aug 27, 2007

• #9

I think it could be the way the driveshaft is bolted to the flange at the rear end??? Does this make sense?

 

88mouse

New Member

Apr 18, 2007

630

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Mooresville nc

Aug 27, 2007

#10

• Aug 27, 2007

• #10

redfox91 said:

Oh I know what you mean, but my best friend owns a tire shop and he just checked them for me again on saturday. Question, If the drive shaft is taken out and not marked and then put back in not in the same position would that throw it off?

Click to expand...

Yeah that can cause it to. Had that probablem a few times on my gt. Take it back out and turn it 180*.

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 28, 2007

#11

• Aug 28, 2007

• #11

Well I turned the driveshaft, replaced the u-joints, took it to another place to check the balance on the tires???? I cant figure it out. Any help would be great

 

R.J.

Member

Aug 20, 2003

813

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16

Warwick, Rhode Island

Aug 28, 2007

#12

• Aug 28, 2007

• #12

Any rear end work done recently?

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 28, 2007

#13

• Aug 28, 2007

• #13

Yes I did just have new gears put in with a master bearing kit... But it seams like if that were the problem then it would vibe all the time or howl???

 

Mustangr

Founding Member

Nov 3, 1999

217

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0

boise Id

Aug 28, 2007

#14

• Aug 28, 2007

• #14

I have vibration in my steering wheel. I am pretty sure that it is a slight bent rim. Could you have bent your rim in anyway?

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Aug 29, 2007

#15

• Aug 29, 2007

• #15

Not at all I am positive on that one...

 

SVT32VDOHC

waiting for the next hack atta

Founding Member

Nov 22, 2001

3,501

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119

Motor City

Aug 29, 2007

#16

• Aug 29, 2007

• #16

I vote for U joints.

 

R.J.

Member

Aug 20, 2003

813

0

16

Warwick, Rhode Island

Aug 29, 2007

#17

• Aug 29, 2007

• #17

How were your wheels balanced?
Check out this web site and see if there is one of these machines near you. This will rule out tires and wheels, for sure.
http://www.gsp9700.com/

 

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LAZERREDGT

Founding Member

Mar 19, 2002

254

0

0

South Texas-(Rio Grande Valley)

Sep 6, 2007

#18

• Sep 6, 2007

• #18

I have the same prob., just that the shifter shakes at around 2500-3000 rpms. Any idea?

 

cjones

Founding Member

Jul 20, 2002

1,561

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37

Avondale, AZ

Sep 7, 2007

#19

• Sep 7, 2007

• #19

redfox91 said:

Well I turned the driveshaft, replaced the u-joints, took it to another place to check the balance on the tires???? I cant figure it out. Any help would be great

Click to expand...

when you had the driveshaft out, did you have it balanced?? maybe when the gears were put in the shaft got dented.

 

Dachipsta

Member

Oct 1, 2006

35

12

19

Sep 7, 2007

#20

• Sep 7, 2007

• #20

Had the same problem a couple years ago. Had a vibration that seemed to oscillate from the front to the back at around 70-80mph. Went thru the whole tire balancing routine also. Changed out DS to a new Motorsport alumninum one and problem solved. I suppose it could have been one or both of the u-joints but as easy as it was to change out the whole thing in one shot rather than d--kin around with u-joints, it wasnt worth my time to find out..........l8r


FWIW, I had that same 2500-3000 RPM vibration as well. I changed out the stock balancer for a PP unit and replaced both motor mounts. The balancer was starting to give up and the vibration was amplified because of the dead motor mounts.