rear suspension question

7M-GTEric

New Member
Sep 27, 2007
56
0
0
38
Knoxville, TN
So, I'm trying to solve a rear suspension issue that I've had for about a month. The problem is that when I hit a bump or uneven pavement, it sounds as though I've got a loose component, blown strut, or worn out bushing of somekind on the right rear side. Looking at the TSRM diagram, my question before actually tearing the car apart is if there's any components (such as the bushing @ base of the strut assembly, or the "suspension support") that is rubber and might be culprit? I'd like to at least source a replacement TEMS shock before I have the car apart, since they're hard to come by and being that it is a DD I can't have it down for days on end.

29apond.gif
 

SySt

New Member
Mar 30, 2005
629
0
0
38
Burnsville, Minnesota
First two things I would check are your sway bar bushings and your sway bar links. You wouldn't beleive the amount of noise those can make when they get worn. I used to work on Ford Super Duties and when those had worn front sway bar bushings you would swear the whole front-end was barely attached because of the sound and feel that would generate going over bumps. It would also be a good idea to make sure all the bolts are tight.
 

7M-GTEric

New Member
Sep 27, 2007
56
0
0
38
Knoxville, TN
hvyman;1158849 said:
struts are prolly worn. they make that sound too. have they ever been replaced?

That was my presumption, but I haven't had the chance to jack it up and check it out just yet. Just trying to figure out what's common so I know what to look for. I've never done suspension work before, so I hope whatever's broken is a relatively easy/cheap fix...
 

Wiisass

Supramania Contributor
If it's all stock back there, I bet everything is blown. That doesn't mean that everything is making noise, but you should probably replace all bushings and the shocks and then it will be good.

And they're shocks in the back and the front, there are no struts in any part of the suspension.
 

SySt

New Member
Mar 30, 2005
629
0
0
38
Burnsville, Minnesota
Wiisass;1159270 said:
If it's all stock back there, I bet everything is blown. That doesn't mean that everything is making noise, but you should probably replace all bushings and the shocks and then it will be good.

And they're shocks in the back and the front, there are no struts in any part of the suspension.

So once his engine develops a miss he may as well replace all moving parts and gaskets as is will be good after that? Whether or not a Supra has struts and how many of them is argueable. However, a Supra does not have "MacPherson" struts.

I mentioned sway bar components because I would have never thought to check those when looking for a suspension noise until it was pretty much shown to me so I think it would easily be over-looked. The upper spring perch could possibly make some noise but I doubt it, the only other thing that would really make a noise from the damper assembly is the bushing on the bottom. That being, if the bushing were to fall apart and the inner sleeve could then move around make a noise.

Really, when thinking of a clunking sound from the rear suspension, sway bar components are probably going to affect the handle of the car the least compared to the other components back there. Therefore, if you don't feel a difference in handling that would support the theory of the rear sway bar components being worn loose.
 

Wiisass

Supramania Contributor
Well the dampers aren't any kind of strut. A strut is a damper that sees side loads and located the suspension, the shocks on the supra do not do that. Macpherson struts, chapman struts, etc, are not on a supra. Strut started being used by people that didn't know what they're talking about and I would like to try and help stop that along with the use of dampening, but I guess this is not really the time for me to complain about poor vocabulary when talking about suspension. So ignore it I guess.

Well he could climb under the car and check the condition of everything. Try and move stuff around see if anything has excessive play and should be replaced. I mean that would be the way to do it. But you're also dealing with 20 year old bushings which are not meant to have that long of a life.

And your engine analogy was flawed. A slight miss does not equal, oh, you took out that part.

Just get under the car and check out the suspension or take it to someone and have them check it out. If you've been dealing with this for a month and haven't even gotten under there to look at it, then you aren't going to fix it by posting on the internet. A clunk could be a lot of things, there are some good ideas in this thread, but you won't know until you check it out. Or buy all new bushings and new shocks and take it to someone and have them install everything and then it should be gone and your suspension should feel good.

But there's a lot of old, crappy rubber back there, that needs attention.
 

7M-GTEric

New Member
Sep 27, 2007
56
0
0
38
Knoxville, TN
I greatly appreciate all of the replies guys. I'd just like to say that I'm not attempting to fix the car by posting on the internet-only trying to go into the project with an educated guess as to what I'll find/should look for, since I've never tackled suspension work on this car; I think this is part of being a good do-it-yourself mechanic, which I pride myself in being. Unfortunately, I'm also a full-time student, part-time worker, and only have one car to drive, and limited time/money with which to work haha

All that aside, I'm planning to fly into it tomorrow so I'll keep everyone posted on what I find. Again, I appreciate the suggestions though. Just looking for what might be common w/fellow Supras. :icon_bigg