vibration

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Mar 25, 2010 | 03:52 PM

1st87

Thread Starter

Racer

Joined: Feb 2010

Posts: 292

Likes: 0

From: East Longmeadow, Ma

vibration

ok, just changed my front left hub bearing-easy job! I still have a very annoying vibration at 45-50mphfeels like i'm driving across a metal grated brigde Its intermitatent but is driving me crazy.. i've replaced rotors, calipers, hoses, pads,and master cylinder. front wheels were just balanced...u-joint????????????

Mar 25, 2010 | 04:07 PM

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,026

Likes: 9,381

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

tires been balanced lately

Mar 25, 2010 | 04:21 PM

gabezC4

Racer

Joined: Oct 2006

Posts: 355

Likes: 0

From: Concord, California

hummmmmm

U Joint might not be a bad place to start looking. Aside from that, these C4's make a lot of odd noises while driving.

Mar 25, 2010 | 07:25 PM

RedLS1GTO

Race Director

Joined: Jul 2003

Posts: 12,742

Likes: 43

From: Color my life with the chaos of trouble.

Did the car sit for an extended period and flatspot the tires? Sounds EXACTLY like how I would describe what my 87 did after a long sit.

Mar 25, 2010 | 10:14 PM

RedVette84

Safety Car

Joined: Apr 2008

Posts: 4,284

Likes: 1

From: Whitehall Pa.

I would give the Hunter balancer a try. Could be the problem or at least part of the problem.

Mar 26, 2010 | 12:25 PM

engle1147

Le Mans Master

Joined: Jul 2007

Posts: 5,043

Likes: 8

From: Tampa Florida

Check the tire for strange tread ware. Spin the rims/wheels on the car and check for bent rims and or out of round tires. U joints don't usually cause vibrations until your going a bit faster but those might be worth checking.

Mar 26, 2010 | 12:50 PM

Shawnksf

Racer

Joined: Jul 2008

Posts: 422

Likes: 6

From: Daly City California

i had a bent rim an she would shimmy and shake like a conga line at about 50mph then the vibration would get to fast to notice

Mar 26, 2010 | 06:19 PM

kebxx

6th Gear

Joined: Mar 2010

Posts: 6

Likes: 0

From: carlsbad ca

Vibration

Maybe you have corrected the problem by now?
Anyway:
I had vibration on my 84 after purchasing new BFG G-Force tires.
Finally on my third try, a guy was able to balance my wheels and tires using a dynamic balance.
This guy was not a tire/wheel/repair shop, but had a professional balancing shop for motors, shafts, etc..
My OEM wheels are not perfectly round, but he still managed to get it right the first time.
I would start with the balancing next, as my C4 has never been known to have alignment issues after 20 years.
Kebxx