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Weird transmission issue?

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Old Apr 21, 2015 | 08:54 AM
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Default Weird transmission issue?

I have an 85 with a 4+3. When reversed out of my garage, the reverse would not dis-engage. If I put the car in first gear it would battle the reverse and it was like a tug of war. If I pit it in neutral and released the clutch the car would buck and stall. Eventually as I popped it in and out of reverse it released. Am I headed for a catastrophic failure.

PS. I actually love the 4+3 and up to this point it has been great.
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Old Apr 21, 2015 | 08:59 AM
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Originally Posted by ClaudioC4
I have an 85 with a 4+3. When reversed out of my garage, the reverse would not dis-engage. If I put the car in first gear it would battle the reverse and it was like a tug of war. If I pit it in neutral and released the clutch the car would buck and stall. Eventually as I popped it in and out of reverse it released. Am I headed for a catastrophic failure.

PS. I actually love the 4+3 and up to this point it has been great.
Been sitting for awhile? Clutch might have rusted stuck
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Old Apr 21, 2015 | 09:42 AM
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Originally Posted by antfarmer2
Been sitting for awhile? Clutch might have rusted stuck
It had only been sitting for a day, but my throw out bearing has been squealing when the clutch is not engaged, maybe it is sticking?
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Old Apr 21, 2015 | 09:53 AM
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Originally Posted by ClaudioC4
It had only been sitting for a day, but my throw out bearing has been squealing when the clutch is not engaged, maybe it is sticking?
I would first check the shift rods and the shifter adjustment. There's a procedure for setting the adjustment in neutral. Do you have the FSM?

You might consider adjustment of the park-lock cable also when doing the shifter alignment.

Last edited by WVZR-1; Apr 21, 2015 at 10:03 AM.
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Old Apr 21, 2015 | 10:08 AM
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Originally Posted by WVZR-1
I would first check the shift rods and the shifter adjustment. There's a procedure for setting the adjustment in neutral. Do you have the FSM?

You might consider adjustment of the park-lock cable also when doing the shifter alignment.
Just a Haynes manual no FSM yet.
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Old Apr 21, 2015 | 10:33 AM
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Originally Posted by ClaudioC4
Just a Haynes manual no FSM yet.
Here's an interesting thread for you maybe:

https://www.corvetteforum.com/forums...alignment.html
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Old Apr 21, 2015 | 10:49 AM
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Thanks, I think that may help, the car is on stands right now as I replace the shocks so I will have a look underneath.
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Old Apr 21, 2015 | 04:28 PM
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x2 on checking shift rods
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Old Apr 22, 2015 | 10:44 AM
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I had the clutch master cylinder go out and it was a bear to get in or out of gear. Check you master cylinder fluid level. It could also be the slave cylinder.
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Old Apr 22, 2015 | 10:55 AM
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Originally Posted by Mtn Billy
I had the clutch master cylinder go out and it was a bear to get in or out of gear. Check you master cylinder fluid level. It could also be the slave cylinder.
This and the confirmation of shifter rod adjustment should be done at the same time. Car's on stands so it would be the prime time to confirm hydraulic leaks as well as confirm the shifter rod adjustment.

Use "clutch hydraulic fluid" GM # 12345347 or equivalent for the clutch system hydraulics.
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Old Apr 23, 2015 | 02:06 PM
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Originally Posted by WVZR-1
This and the confirmation of shifter rod adjustment should be done at the same time. Car's on stands so it would be the prime time to confirm hydraulic leaks as well as confirm the shifter rod adjustment.

Use "clutch hydraulic fluid" GM # 12345347 or equivalent for the clutch system hydraulics.
Should a dealer cary this fluid? Would I benefit from just changing the fluid?
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Old Apr 23, 2015 | 02:21 PM
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Originally Posted by ClaudioC4
Should a dealer cary this fluid? Would I benefit from just changing the fluid?
A dealer should have and to avoid the risk of breaking something you could remove fluid from the master with a baster and refill with as much as possible of fresh, repeat a few times on a frequent basis until you've got a reasonably fresh fill.

What I mean by breaking something is perhaps the bleeder screw was frozen in the slave, I wouldn't force the issue to the point where you could twist off the bleeder.
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