Please help me diagnose

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Sep 5, 2003 | 04:04 PM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

Please help me diagnose

I had shocks, sways and tires installed at the same time...

Now around 70 MPH the car begins to vibrate. Over 90 and it feels like it will shake apart. The steering wheel is shaking as is the entire car..

I check and I have all of my weights on the rims... Is this a symptom of the wheels out of balance?

Sep 5, 2003 | 04:12 PM

gonbad

Melting Slicks

Joined: Aug 1999

Posts: 3,452

Likes: 3

From: Spring, TX

Re: Please help me diagnose (ICULUKN-C5)

First, jack up the car and make sure the swaybar brackets and end links are tight. Check the shocks mounting points as well.

Most likely you have spun a weight out of its original position or it was not balanced correctly in the first place. Having a weight move on the wheel is not uncommon.

Other possible culprit is a bad tire where the belts are not overlapping each other properly.

Sep 5, 2003 | 04:28 PM

runamuk

Le Mans Master

Joined: Jul 2002

Posts: 7,370

Likes: 8

From: Slave to the evil empire

Cruise-In V Veteran

St. Jude Donor '04

Re: Please help me diagnose (ICULUKN-C5)

You need to take it back to whoever did the work, if you start messing with the car they'll try to blame you for the vibration.
More than likely it's a wheel out of balance, just because the weights are on the wheels doesn't mean that they're in the right place. :cheers:

Sep 5, 2003 | 04:36 PM

Evil-Twin

Team Owner

Joined: Mar 2001

Posts: 21,325

Likes: 3,841

From: small town in S.E Pa. PA

St. Jude Donor '03-'04

Re: Please help me diagnose (ICULUKN-C5)

Sounds like a wheel weight to me... If a lazy tech cant get the wheel balanced he will just let it go... figuring you wont know the difference... I wont have my wheels balanced anywhere unless I can watch.. see the out of balance condition. See them add the weight and recheck the balance.. If I dont see 00 00 . I wont accept the balance... Some times rotating the tire 90 degrees on the rim will help with a severely unbalanced wheel.
Also in your case a recheck of the sways and shock mounts etc. I would demand to see the tires rebalanced and their actual condition of balance before they correct anything.. those tires should all see 00 00 on the balancer..

Sep 5, 2003 | 06:18 PM

ICULUKN-C5

Thread Starter

Le Mans Master

Joined: Aug 2001

Posts: 7,064

Likes: 18

From: Arizona

Re: Please help me diagnose (Evil-Twin)

Tires are brand new.... Going back to the shop tomorrow..

Sep 6, 2003 | 02:14 PM

carpe dm

Le Mans Master

Joined: Oct 1999

Posts: 8,205

Likes: 40

From: Tucson AZ

Re: Please help me diagnose (ICULUKN-C5)

Quote:

... Is this a symptom of the wheels out of balance?

Sounds like it to me. Have them do a "dynamic" balance if possible. Good luck. :smash:

Sep 6, 2003 | 04:35 PM

WWK888

Le Mans Master

Joined: Feb 2002

Posts: 5,407

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From: HONOLULU HAWAII

Re: Please help me diagnose (carpe dm)

Try find a shop that uses the Hunter balancing machine...its the best out there IMHO. :cheers:

Sep 7, 2003 | 09:12 AM

JaminJ

Burning Brakes

Joined: May 2002

Posts: 889

Likes: 1

From: Arizona

Re: Please help me diagnose (ICULUKN-C5)

Glen, If you continue to have problems and can't resolve. Try Network Alignment...go to the one @ 67th Ave + Bethany Home Rd. I think the guys name is Brennan..he only works on the lift next to waiting area. Knows his s_it. Tell him how you drive your car and he can mod from heavy auto cross to total street. He does alot of the Corvette autocrossers alignments.

He will find the problem..

Good luck

John :cheers:

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