clunk/vibration from halfshaft(s)? - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 07-07-2012, 11:07 PM Thread Starter
Seasoned PostWhore
 
Earl's Avatar
 
Join Date: Jul 2002
Location: Katy TX
Age: 36
Posts: 6,111
clunk/vibration from halfshaft(s)?

Back in October, I had a new passenger side hub and bearing installed, had a mark viii single piece aluminum driveshaft installed, and all was fine, for about a week.

One day, getting on the freeway, I hear a loud clunk from the rear suspension of the car, and from that point forward a very slight knocking from the rear of the car when going over bumps, also occuring when pulling out of a driveway, if there was any sort of "drop" onto the surface of the road, example, the front wheels drop down onto the road, get a clunk from the rear of the car, then, when the rear of the car drops down onto the surface of the road (we're talking about like, very slight drop, pulling from an entrance to a shopping center onto the road, if those two surfaces aren't totally level, for example) there will be a clunk again from the rear.

Also, when taking off from a stop, under normal to moderate acceleration, there will be this very strange knocking sound from the rear of the car, this is on FLAT roads that are in good shape, not the same knock sound as going over bumps, this is a strange sound I have never heard before. Hard to descibe.

-Rear swaybar endlinks and their bushings are intact, tight, and look and feel fine
-Rear swaybar mounts to the body are intact, tight, greased, and look fine.
-all bolts, related to suspension, and rear end as well as drive shaft are present, are tight, and look normal.
-nothing appears to be rubbing on anything else

However, the knocking has been getting more and more pronounced. Also, there is a vibration around 70MPH that seems to shake from the front of the car to the back of the car, this has been getting progressively worse.

I DID NOT have the driveshaft balanced, just took a chance on it being right, and I DID NOT have new u-joints installed, they felt nice and tight, with that said, this vibration was not present initially, this all started after whatever it was in the rear went "boom"

Arent there u-joints in the halfshafts under the boots? I looked it up at work, and there appears to be a "service kit" for the joints, but it is quite pricey, I have seen entire halfshafts advertised from places such as napa, carquest, etc. that aren't badly priced, thoughts on that?

I am not looking for all out performance (raxles) or anything like that, just stock keep it going down the road running good, reliable, etc.

thanks

earl

2015 Mustang GT Premium / Manual / 3.55 / Recaro
Earl is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 07-08-2012, 10:15 AM
Seasoned PostWhore
 
Tbird1997's Avatar
 
Join Date: Feb 2009
Location: Murfreesboro, TN
Age: 27
Posts: 2,134
First off you NEED new u joints on the drive shaft; the old ones are probably stock and I bet most of the vibrations are coming from this. Balancing the drive shaft would also be a good idea and help lower the vibrations, it's also normally recommended before installing a new driveshaft but that's up to you. As far as the clunking in the axles I have no clue, maybe they have gone bad but my guess is bushings. I would get under there again an double check them

-Patrick
[email protected] on used street tires
See profile for full list of mods

Pics here.. http://forums.tccoa.com/showthread.php?t=129479
Tbird1997 is offline  
post #3 of 5 (permalink) Old 09-05-2012, 08:57 PM
Rob
Seasoned PostWhore
 
Rob's Avatar
 
Join Date: Jul 2002
Location: Hubbard, TX
Age: 37
Posts: 3,902
Send a message via AIM to Rob
My axles go "click" when going from reverse to drive and vise-versa. I have a pair of new axles from advance for this. They are going in when i build the new rear. I don't think that's what your problem is. Keep us posted on what you find out! It would be cool to look at it sometime if it becomes more annoying and elusive! We could put it on one of my lifts!

-Rob
RIP '94 Amber Fire Pearl Metallic Thunderbird on Bullitts [email protected]
96 Sport '02 Explorer PI with ported heads, 90MM LMAF, DirtyDog Marauder TC, Lasota tune, Jmod, Magnaflow mid-mount with X, no cats. Urethane drivers motor mount. HIDs!
Rob is offline  
Sponsored Links
Advertisement
 
post #4 of 5 (permalink) Old 09-05-2012, 09:17 PM
Seasoned PostWhore
 
miller1995's Avatar
 
Join Date: Nov 2002
Location: Orland Park, IL
Posts: 2,806
Send a message via AIM to miller1995
Check the bolts on the pinion flange. If you didn't use loctite, they could've come loose.

Pearl 97 LX Sport - Purchased Feb. 09 - 5x4.5 Bolt patern, Cobra Brakes, Voghtland spings, Silver FR500's, 3.73's, MMX drive shaft...more to come
Denim Blue 97 Cougar Sport - Purchased Nov. 14 - 22k miles and now the daily driver, staying stock
Purple 95LX Supercharged 4.6PI Parting Out
Black '11 VW Jetta Sportwagen TDI 6-speed - Fun but efficient
SOLDWhite '03 Crown Vic P71
Pearl 96 Lx - Parted and gone, some parts still available
SOLD2006 Mazdaspeed6
SOLD1998 Escort ZX2
RIPBlue 97 LX - MANY PARTS STILL AVAILABLE
RIP My Black 95 LX 4.6
miller1995 is offline  
post #5 of 5 (permalink) Old 09-06-2012, 04:10 AM
4th Gear Poster
 
mh68's Avatar
 
Join Date: May 2009
Location: Missouri
Age: 50
Posts: 290
I had the same clunk as you're describing. I replaced the half shafts, didn't help. I ended up replacing the rear lower control arm to frame bushings and the toe link compensators and that fixed it.

Mike
mh68 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome