Another 4+3 problem...chattering noise
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Pro
Joined: Jul 2000
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From: Vancouver WA
Another 4+3 problem...chattering noise
I'm hearing some chattering noise while flooring the accelerator. It's not as bad with OD off, but very noisy with it on.
My warrenty just expired last month and the shop I first took it to screwed it up twice and now this.
Does anybody (esp Scorp since you've been thru this) experienced this noise and know what it might be and if it's easy to repair.
My warrenty just expired last month and the shop I first took it to screwed it up twice and now this.
Does anybody (esp Scorp since you've been thru this) experienced this noise and know what it might be and if it's easy to repair.
Melting Slicks
Joined: Aug 2001
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From: Lockport NY
Re: Another 4+3 problem...chattering noise (87Beast)
????
Melting Slicks
Joined: Aug 2001
Posts: 2,516
Likes: 0
From: Lockport NY
Re: Another 4+3 problem...chattering noise (87Beast)
...Hmmmm...Nobody chiming in...OK, Beast, I'll take a stab...
The OD has many springs in it, I believe I've read somewhere (www.5speeds.com???) that they are prone to break...If this happened, it would apply uneven pressure to the friction material in the OD, which may very well chatter under acceleration, like you describe...
Lemme think...David-F had a guide to 4+3 rebuilds...Maybe someone will recall the URL...
Edit: Here it is - http://corvetteactioncenter.com/foru...threadid=10459
And another at - http://www.gearzone.net/nash.htm
...Uh, oh...Reading this last site, I think you gots an expensive problem... :(
[Modified by Rich B., 1:23 PM 7/22/2003]
The OD has many springs in it, I believe I've read somewhere (www.5speeds.com???) that they are prone to break...If this happened, it would apply uneven pressure to the friction material in the OD, which may very well chatter under acceleration, like you describe...
Lemme think...David-F had a guide to 4+3 rebuilds...Maybe someone will recall the URL...
Edit: Here it is - http://corvetteactioncenter.com/foru...threadid=10459
And another at - http://www.gearzone.net/nash.htm
...Uh, oh...Reading this last site, I think you gots an expensive problem... :(
[Modified by Rich B., 1:23 PM 7/22/2003]
Thread Starter
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Joined: Jul 2000
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From: Vancouver WA
Re: Another 4+3 problem...chattering noise (Rich B.)
Sorry been gone for a while...All I can describe is a rattling sound when accelerating (Sounds like shaking a can with a ball bearing). And what pisses me off is I paid over 1200 dollars to have a known tranny shop fix it when I had to take it in twice cause they screwed it up and now this problem right after the warrenty expired :mad
Maybe I should think about a 6-speed thanks though
[Modified by 87Beast, 12:27 PM 7/22/2003]
Maybe I should think about a 6-speed thanks though
[Modified by 87Beast, 12:27 PM 7/22/2003]
Thread Starter
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Joined: Jul 2000
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From: Vancouver WA
Re: Another 4+3 problem...chattering noise (87Beast)
OK here's what I found out so far...
While at idle I can hear a faint rattling sound
When the clutch is depressed it goes completly away
When I take off at normal acceleration from a stop light, there is an odd sound (hard to describe) followed by rattling sound (sounds like ball bearings rattling in a can)
If I take off at WOT there is a very loud rattling sound which seems go away or at least barely noticable when I release the pedal and let the tranx shift into 4-OD.
So know I know that the rattling sound goes away when the clutch is depressed and sometimes makes an odd grinding sound when stop to go, and rattles all the time and very loud when WOT accelerating.....
Does this sound like an idling gear in the manual section?
While at idle I can hear a faint rattling sound
When the clutch is depressed it goes completly away
When I take off at normal acceleration from a stop light, there is an odd sound (hard to describe) followed by rattling sound (sounds like ball bearings rattling in a can)
If I take off at WOT there is a very loud rattling sound which seems go away or at least barely noticable when I release the pedal and let the tranx shift into 4-OD.
So know I know that the rattling sound goes away when the clutch is depressed and sometimes makes an odd grinding sound when stop to go, and rattles all the time and very loud when WOT accelerating.....
Does this sound like an idling gear in the manual section?
