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clunking sound, not tranny mount

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Old Jan 19, 2009 | 11:39 AM
  #1  
kkingsrulee's Avatar
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
clunking sound, not tranny mount

Hey, I asked a couple days ago about a clunking sound that comes from my '90 RS 305 and the most common answer was a tranny mount, so I changed the tranny mount yesterday and nothing changed. I really want to get this fixed so any more ideas on what it could be? here are the symptoms

Under medium-hard braking it starts clunking multiple times nearing the stop and when you reach the stop and the car stops completely there is another clunk when all the momentum shifts from front to back.

when i downshift at anytime it clunks multiple times

if i shift to the next gear and don't give it any gas upon releasing the clutch it gives a violent clunk

anytime i put it in reverse and move a little it clunks

does NOT clunk while turning

I was told by the previous owner that he thought it was a clutch bushing, i don't see how this could be if when i brake when i come to a stop i have the car in neutral and it still clunks

please help guys, it's really annoying.
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Old Jan 19, 2009 | 11:44 AM
  #2  
89IROCZ28's Avatar
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Joined: Mar 2000
Posts: 254
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From: Painesville, Ohio USA
Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
Re: clunking sound, not tranny mount

Possibly a u-joint on the driveshaft is something I would check.
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Old Jan 19, 2009 | 11:56 AM
  #3  
kkingsrulee's Avatar
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Joined: Oct 2008
Posts: 800
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: clunking sound, not tranny mount

How do I check the u joint? just look at it and see if it's cracked or broken?
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Old Jan 19, 2009 | 12:05 PM
  #4  
87tpiz28's Avatar
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From: Riverside Ca
Car: 1987 z28
Engine: 305tpi
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: clunking sound, not tranny mount

Check your torque arm bushing. Having similar problems but its most noticeable when stopping or shifting from R to drive. its around $20 for the bushing mine should be coming in tomorrow
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Old Jan 19, 2009 | 08:20 PM
  #5  
89IROCZ28's Avatar
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iTrader: (14)
 
Joined: Mar 2000
Posts: 254
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From: Painesville, Ohio USA
Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
Re: clunking sound, not tranny mount

U-joint: At each end of the driveshaft, grab the shaft near the yoke and try to move it sideways (up, down, & side to side). If the u-joint is bad and causing the noise you're hearing you'll basically be able to rattle it around.
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Old Jan 19, 2009 | 10:45 PM
  #6  
akmusclecar's Avatar
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Joined: Sep 2008
Posts: 238
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From: Anchorage, Ak
Car: 1988 Pontiac Firebird
Engine: 5.0 TBI
Transmission: W/C T5
Axle/Gears: 3.08 Posi
Re: clunking sound, not tranny mount

As i stated on your other post. It sounds like your u-joints are going out. Have you replaced them since owning your car?
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Old Jan 20, 2009 | 12:16 AM
  #7  
kkingsrulee's Avatar
Thread Starter
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Joined: Oct 2008
Posts: 800
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: clunking sound, not tranny mount

I had work all day today and have it all day tomorrow, I will put the car back up on jack stands wednesday, i'll check the u joints and the torque arm bushing.

is there any chance it could be the "clutch bushing" that the previous owner said it was?

and no, i have not replaced the u joints in the past 9 months that i have owned the car
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Old Jan 20, 2009 | 10:02 AM
  #8  
89IROCZ28's Avatar
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iTrader: (14)
 
Joined: Mar 2000
Posts: 254
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From: Painesville, Ohio USA
Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
Re: clunking sound, not tranny mount

Unless you can relate the noise to engaging or releasing the clutch (in neutral and a gear), it wouldn't be the first thing to suspect.
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Old Jan 27, 2009 | 08:16 PM
  #9  
kkingsrulee's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2008
Posts: 800
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: clunking sound, not tranny mount

Alright, so I finally found the time to lift my car back up and find out where the sound was coming from and it's the torque arm. Now I'm not sure whether it's the bushing or what but the end of the torque arm that is near the front of the car (not the other end near the rear end) is moving up and down freely in the housing around it, I tried to look and see any holes through the housing that would hold bolts to keep it from bouncing around but did not spot any. How do I go about fixing this problem? is it the bushing? the arm itself? what needs to be fixed? thanks in advance guys.
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Old Jan 27, 2009 | 09:21 PM
  #10  
89IROCZ28's Avatar
Member
iTrader: (14)
 
Joined: Mar 2000
Posts: 254
Likes: 2
From: Painesville, Ohio USA
Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
Axle/Gears: 4th Gen, 3.23, posi, PBR
Re: clunking sound, not tranny mount

As 87tpi mentioned, it sounds like the rubber bushing that goes into the housing and surrounds the end of the torque arm has deteriorated and is now missing. If I recall correctly, it's somewhat rectangular in shape.
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