Corvette C4 Forum 1984 through 1996

whining noise coming from transmission

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Old 10-17-2007, 09:07 AM
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Default whining noise coming from transmission

This just started doin this about a couple days ago and its starting to really worry me. I don't know what I did to cause it in the first place but now there is a whinning noise, kind of a deep tone whine, that sounds like its coming from the transmission. You can really hear it when you let it decelerate from about 1600 rpm and it follows the rpms, going from loud to soft when I finally depress the clutch to go into first. Its not as noticeable during acceleration, but you can softly hear it. I will try to get a sound clip to show it better. But does anyone know what's goin with my transmission? It only does this in second gear; no others. Is this a sign my trannys goin out? This is on a 85 corvette with manual 4+3 Trasmission. Please help!!!
 
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Old 10-17-2007, 09:23 AM
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Default RE: whining noise coming from transmission

Hi 85, the first thing that comes to mind is worn or disintegrated needle bearings.

Have you checked the lube oil level?
 
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Old 10-17-2007, 12:59 PM
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Old 10-17-2007, 10:41 PM
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Default RE: whining noise coming from transmission

I haven't checked the fluid level yet. And the worse thing is that this is a daily driven car and I have no way around that. Do any of you have a step by step manual to change the filter and fluid on the manual trans? I have the haynes repair manual and it says nothing about the manual trans but has one for the auto. Can anyone please help?
 
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Old 10-17-2007, 10:50 PM
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Default RE: whining noise coming from transmission

ORIGINAL: 85vette80821

I haven't checked the fluid level yet. And the worse thing is that this is a daily driven car and I have no way around that. Do any of you have a step by step manual to change the filter and fluid on the manual trans? I have the haynes repair manual and it says nothing about the manual trans but has one for the auto. Can anyone please help?
I got the Hayne's/Charmin, and mine has the pics/procedure...
Gimme' 5, I'll scan n post. I'mgettin' a grub on........................ [sm=gobble.gif]
 
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Old 10-17-2007, 11:02 PM
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Default RE: whining noise coming from transmission

Check Chapter 1, section 32.

[IMG]local://upfiles/5243/3485FE55430749E991C4BE42BECADB6E.jpg[/IMG]

[IMG]local://upfiles/5243/DDE350D1E7724282AB51851FDECAAFEC.jpg[/IMG]
 
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Old 10-17-2007, 11:03 PM
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Default RE: whining noise coming from transmission

Thanks alot.
 
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Old 10-17-2007, 11:08 PM
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Default RE: whining noise coming from transmission

Ok just to be sure im on the right page, its the overdrive unit fluid change right?
 
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Old 10-17-2007, 11:12 PM
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Default RE: whining noise coming from transmission

ORIGINAL: 85vette80821

Ok just to be sure im on the right page, its the overdrive unit fluid change right?
Good question there, '85... I mighta' sent ya' a bum steer.... hold on there................

edit: I think the tranny fluid, and the O/D unit fluid are integral. You got this pic?

re-edit: I'm wrong again there, '85. The tranny fluid is NOT integral with the O/D unit. Check plugs are shown in this pic, and in Ch 1, p 19. You got?

[IMG]local://upfiles/5243/FE9AFA26C4AE47D287C4629FB25AB6FB.jpg[/IMG]
 
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Old 10-17-2007, 11:24 PM
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Default RE: whining noise coming from transmission

Yes, i got the pic. Isn't there two different oils for the transmission and the overdrive unit? I think its ATF for the overdrive and SAE80 gear oil for the tranny. If i were to get this diagnosed and repaired at a shop, around how much would you estimate it to be. I live in Maui too so im betting it'll be quit a bit.
 


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