ST185- rear axle movement and clunking

Lets talk clutches and everything drivetrain related

ST185- rear axle movement and clunking

Postby ruffneck » Thu Dec 28, 2006 11:18 am

HIya....so I've noticed a clunk coming from the rear of the car whenever you get on the brakes, at first I thought it WAS the brakes, but under the car on the weekend having a look around, I notice the rear axles have what seems to be alot of in/out movement - and when you pull on the rear axle, I hear the clunk as it moves out. It comes out by about 8mm, don't know if that is normal? The clunk is really metallic, and definitely getting louder and more frequent quickly. I know the driveshafts are supposed to have some movement, but I can't figure out why it would clunk whenever I put on the brakes - why would that cause the axles to pull out and make the clunk sound? ( the rear diff mount is brand new toyota, and urethane filled too btw)
Members don't see the above ad. Register now - it's free!
ruffneck
st185 that's getting there
melb, aust.
ruffneck
Club Member
 
Posts: 294
Joined: Fri Aug 13, 2004 7:20 am

Postby alltracman78 » Fri Dec 29, 2006 1:05 am

Your diff might be going bad.
If it has play between the teeth, it will clunk on acceleration and deceleration.
If it is this, you either need to replace it or have the lash adjusted.

The driveshafts are supposed to slide in and out.
This is how they adapt to the suspension going up and down.
Image
User avatar
alltracman78
GTFour God
 
Posts: 4677
Joined: Mon Aug 09, 2004 9:04 am
Location: Ma

Postby ruffneck » Fri Dec 29, 2006 5:11 am

yo...it doesn't clunk on accel or deccel, just on braking, and you really only hear it when travelling at around walking speed..then it's pretty loud. It really couldn't be the brakes, everything is tight, and no real room for movement?
ruffneck
st185 that's getting there
melb, aust.
ruffneck
Club Member
 
Posts: 294
Joined: Fri Aug 13, 2004 7:20 am

Postby CDN-GT4 » Fri Dec 29, 2006 5:16 am

Check out your suspension bushings, it's common for MR2's with worn out radius rod bushings to do that. I'm not sure if the Celica is the same or similar, but it might be worth a check.
CDN-GT4
Club Member
 
Posts: 445
Joined: Sat Aug 06, 2005 6:46 pm
Location: BC, Canada

Postby ruffneck » Fri Dec 29, 2006 5:32 am

radius rod would be control arm? Now we're talking...I hear what you're saying, mine is kinda the opposite...I put in new Superpro polyurethane bushes in there a couple of months back, and come to think of it, the noise started not too much after as I recall...and has been getting louder?? Maybe too much or not enough movement in those bushes..
ruffneck
st185 that's getting there
melb, aust.
ruffneck
Club Member
 
Posts: 294
Joined: Fri Aug 13, 2004 7:20 am

Postby CDN-GT4 » Fri Dec 29, 2006 5:38 am

Or maybe a loose fastener? I've read that they should be rechecked some time after things have been apart.
CDN-GT4
Club Member
 
Posts: 445
Joined: Sat Aug 06, 2005 6:46 pm
Location: BC, Canada

Postby Stubble » Fri Dec 29, 2006 5:48 am

My new favorite bit of advice for clunks is the swaybar endlinks, although you would notice that clunk over bumps, and not just during braking. Still, easy to check - grab the sway bar and try to move it - you can feel free play in the endlink.
Brady Ryall
1990 ST185 Red - parts
1990 ST185 Black
1999 Miata
2008 A3 Quattro S-line
User avatar
Stubble
Established Member
 
Posts: 1195
Joined: Mon Aug 09, 2004 12:02 am
Location: Winnipeg, Manitoba, Canada

Postby ruffneck » Fri Dec 29, 2006 6:00 am

good stuff guys, I'll check those on the weekend...keep em coming!! I'm hoping it's nothing too serious....I had sworn no more money on the car :twisted: of course, yeah right.
ruffneck
st185 that's getting there
melb, aust.
ruffneck
Club Member
 
Posts: 294
Joined: Fri Aug 13, 2004 7:20 am

Postby alltracman78 » Fri Dec 29, 2006 4:10 pm

Put the rear end in the air and turn the rear axles back and forth hard.
If you hear the clunk, it will be either the rear diff, axles, or brakes.

If not [and you can check these first] it could be suspension bushings, diff mount bushing, or rear subframe bushing.

If you just replaced ALL the rear suspension bushings with new ones, they would not be clunking.
Unless you didn't tighten a nut/bolt enough of course.....
Image
User avatar
alltracman78
GTFour God
 
Posts: 4677
Joined: Mon Aug 09, 2004 9:04 am
Location: Ma

Postby ___Scott___ » Fri Dec 29, 2006 6:15 pm

Don't overlook the spherical bearings. There are four of them (two on each side), and they do get loose over time.
Scott
Colorado Springs, CO - USA
SONY
Opera - The better browser
User avatar
___Scott___
Established Member
 
Posts: 2067
Joined: Mon Aug 09, 2004 5:30 pm
Location: - - USA - - Colorado Springs, CO

Postby Kyoto » Fri Jan 19, 2007 1:20 am

With 230awkw+ i reckon your diff is going Andy. :wink:
Tim // Melbourne, Australia

1986 ST165. 152,000km on chassis
ST205 WRC engine / IC system / rear LSD with 82,000km
Blitz K1-380V
Apexi Power FC
Aussie 3" dump pipe to 3" catback system
TWM short shifter.
Whiteline front strut brace
User avatar
Kyoto
Club Member
 
Posts: 482
Joined: Fri Aug 20, 2004 2:15 am
Location: Melbourne

Postby wizzards581 » Fri Jan 19, 2007 2:09 am

mine has 9x,xxx miles and it gives a clunk sound during instant acceleration or deceleration. mechanic said its a worn out diff... loosen? maybe.?
-90 celica turbo All-Trac (sold)
-03 matrix XR
wizzards581
Established Member
 
Posts: 1362
Joined: Fri Jan 06, 2006 1:20 am
Location: Nor Cal

Postby ruffneck » Fri Jan 19, 2007 9:00 am

With 230awkw+ i reckon your diff is going Andy.

Hiya Tim! you're right, pretty sure it's the diff... :(
ruffneck
st185 that's getting there
melb, aust.
ruffneck
Club Member
 
Posts: 294
Joined: Fri Aug 13, 2004 7:20 am

Postby BoostedBlueToyotas » Sat Jan 20, 2007 2:30 am

wizzards, your problem definitely sounds like a worn out rear differential
cushion
Tim Plessing
Columbia, MD

1990 ST185 - blue/blue cloth 152K-SOLD
1993 MR2 turbo - blue/black leather 59K TOTALLED/PARTING OUT
2006 Acura TSX - black/black 6 spd
2006 Mini Cooper S JCW Space blue/Silver roof 39k
2006 Mini Cooper JCW Silver/black roof 34k
BoostedBlueToyotas
Established Member
 
Posts: 2663
Joined: Mon Aug 09, 2004 11:33 pm
Location: Columbia, MD


Return to Drivetrain Central

Who is online

Users browsing this forum: No registered users and 4 guests