SC- 1st Gen (1992-2000)

I give up on the clunking

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Old 10-09-15, 12:55 PM
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Kris9884
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Wow some great info guys, thanks a bunch. It seems its been narrowed down to the sub frame bolts or the upper control arms. I would never have guessed the sub frame bolts. I'll update it this weekend with the fix, hopefully!
Old 10-09-15, 01:16 PM
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LEXOWINO
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Originally Posted by Blkexcoupe
Have you torqued the sub frame bolts recently? They need to be checked with time and can cause a creaking/clunk if they loosen up.
Im replacing the transmission mount on my car and tightening the subframe bolts as well. You may want to look into those to items.
Old 10-09-15, 02:00 PM
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Yeah I'll check those this weekend.
Old 10-09-15, 02:56 PM
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jadu
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Originally Posted by Kris9884
Oh that reminds me, I replaced the end links too while I replaced the lower control arms, I had to cut them off lol. So I guess it would have to be the upper control arms, it just has to be. I'll order them tonight lol.. Man, this front end is going to be brand new.
Let us know how it goes. My front end is all brand new as well! The oldest thing for me is the upper control arms which I replaced a few years back. I inspected everything and couldn't find anything out of place or loose and it drives great. I don't hear anything when I hit a pothole and I just haven't had the time to look any further. I thought it was the endlinks because I've cheaped out on them and it could have failed prematurely. The shocks, well, are KYBs and another wear item
Old 10-28-15, 04:03 PM
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Kris9884
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FFFFFFFF MEEEEEEEEEE, I replaced the upper control arms and double checked all the sub-frame bolts and still knocking. Only thing it could be now is a bad, new part I've installed or a tranny mount but I really doubt that. It seems like its less often though. Really only happens when its at full lock and its ONLY on the driver side. grrr
Old 10-28-15, 08:13 PM
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MMCtuner
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I'm pretty sure that the culprits are those sub-frame bolts. You should take them off, add some wd40, a lift on the crossmember and then go hard on them. Mine required a special nut (a deeper one) as the one that came with the tool set didn´t help once certain turns were done.

Last edited by MMCtuner; 10-28-15 at 08:54 PM.
Old 10-28-15, 09:18 PM
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Kris9884
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Originally Posted by MMCtuner
I'm pretty sure that the culprits are those sub-frame bolts. You should take them off, add some wd40, a lift on the crossmember and then go hard on them. Mine required a special nut (a deeper one) as the one that came with the tool set didn´t help once certain turns were done.
I'll try anything, I have to get under there again and change the oil this weekend anyway.
Old 10-30-15, 10:59 AM
  #23  
lexuscfour
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If your strut mount looks anything like this, then it's probably why you're clunking.

Swapped the coilovers from my other car and no more clunk.

Old 10-30-15, 11:05 AM
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Thanks for taking the picture man, I'll check it out. I'm grabbing coilovers soon so I've been avoiding that so far.
Old 10-30-15, 05:04 PM
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MY friends was clunking and we redid everything in suspension wise except the strut and spring. We put new springs and shocks and no more clunking. Only other thing is the wheel bearing.
Old 10-31-15, 08:26 AM
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Originally Posted by SCFactory
MY friends was clunking and we redid everything in suspension wise except the strut and spring. We put new springs and shocks and no more clunking. Only other thing is the wheel bearing.
Yeah that has to be it, which is kinda soothing because its not catastrophic like a ball joint or broken wheel stud or something.
Old 10-31-15, 11:11 AM
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Originally Posted by lexuscfour
If your strut mount looks anything like this, then it's probably why you're clunking.

Swapped the coilovers from my other car and no more clunk.

oh wow. mines wasn't that bad when I reassembled it. time for new shock boots. I think we just about covered everything in this thread. process of elimination elliminated
Old 11-03-15, 04:46 PM
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I just looked at. 95 sc400. I heard this clunking noise. I jacked it up but didn't see any bad mounts. Is there a carrier for the drive shaft that could have ripped rubber causing the driveshaft to make noise?
Old 11-04-15, 11:48 AM
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Originally Posted by Jecprorace
I just looked at. 95 sc400. I heard this clunking noise. I jacked it up but didn't see any bad mounts. Is there a carrier for the drive shaft that could have ripped rubber causing the driveshaft to make noise?
Yes they have carrier bearings and rubber mounted so it is possible you have inspect and it and move it with your hand, turn it etc
Old 11-04-15, 11:53 AM
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i have a clunking as well, i'm already on coilovers and PO said he did supra control arms, but i think he only did upper cz the lowers look pretty meh. what's the best way to check the bushings without removing? i only have a clunk when the car is going slowly over small bumps and sways side to side a lot. i had a loud pop clunk in the rear which was a sway bar end link, so i'm gonna check those first, then sway bar bushings. i always start with the cheap stuff.


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