Suspension and Chassis Questions about your suspension? Need chassis advice?

Odd knocking noise

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Old Aug 19, 2010 | 03:39 AM
  #1  
Dartht33bagger's Avatar
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From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Odd knocking noise

Whenever I turn my wheels while stopped or while at low speed, while going over a speed bump, or while going around a turn quickly the front of my car makes a knocking noise. It sounds almost like metal bending or a shock that's bad? I have no idea what it is though.
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Old Aug 19, 2010 | 04:14 AM
  #2  
J91's Avatar
J91
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Joined: Jan 2009
Posts: 1,126
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From: Columbus Ohio
Car: 91 Z28,64ImpalaSS4094spd,67 Galaxy
Engine: Dart 415Profiler hd,cmprlrs,Hlly750
Transmission: Built 700R4, 3200 stall
Axle/Gears: 3:89 Moser 9"
Re: Odd knocking noise

Get the car up in the air and do a close inspection of parts, get a prybar, check the ball joints, springs, shocks, etc. I would also check the frame rails closely especially the area around the steering box. Lookup threads on the Wonderbar and steering box fixes. This a problem area on our cars.
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Old Aug 20, 2010 | 09:47 PM
  #3  
Dartht33bagger's Avatar
Thread Starter
Senior Member
15 Year Member
 
Joined: Feb 2010
Posts: 695
Likes: 11
From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Re: Odd knocking noise

Ok I'll take a look under there soon. What is a good wonderbar to get? And how hard are they to install?
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Old Aug 21, 2010 | 10:29 AM
  #4  
wanab03ss's Avatar
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Joined: Aug 2007
Posts: 1,111
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From: chicago
Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: Odd knocking noise

You can find them on here time to time for around $40, real easy to install this forum. Also check your upper strut mounts, and spindle bolts
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Old Sep 4, 2010 | 05:07 PM
  #5  
Dartht33bagger's Avatar
Thread Starter
Senior Member
15 Year Member
 
Joined: Feb 2010
Posts: 695
Likes: 11
From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Re: Odd knocking noise

Well I ordered a TDS wonderbar and when I went to install it, BEHOLD. There is already one there. So I guess I'm returning this wonderbar lol
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Old Nov 14, 2010 | 08:30 PM
  #6  
Dartht33bagger's Avatar
Thread Starter
Senior Member
15 Year Member
 
Joined: Feb 2010
Posts: 695
Likes: 11
From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Re: Odd knocking noise

Ok update on this...

Wonderbar was already installed so that gets rid of that. A week ago I replaced two ball joints and a tie arm that was bad on the steering system (according to les shwab after an alignment appointment). Also checked the struts and they seem fine, they don't bounce more then once under pressure, and they come back to rest quickly.

And the car still makes noises when turn the wheel or going over bumps. When going over small washboard bumps it sounds like something is loose and about to fall off the car, but I can find nothing loose on the front end. Its really stumping me.
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