84 w/4+3
Thread Starter
4th Gear
Joined: Apr 2016
Posts: 4
Likes: 0
84 w/4+3
Hello,
I have a 1984 Corvette with 29000 miles on the clock. After the car has warmed up I seem to have difficulty getting it into gear. When I first start it up it will shift fine, also shifts fine when not running.
But when warmed up it becomes very difficult to get into gear, this seem to be for all gears including reverse.
Anyone have a similar problem? With possible fix?
The car is 100% original, I'm the original owner.
Thanks, Al
I have a 1984 Corvette with 29000 miles on the clock. After the car has warmed up I seem to have difficulty getting it into gear. When I first start it up it will shift fine, also shifts fine when not running.
But when warmed up it becomes very difficult to get into gear, this seem to be for all gears including reverse.
Anyone have a similar problem? With possible fix?
The car is 100% original, I'm the original owner.
Thanks, Al
Safety Car
Joined: Oct 2007
Posts: 4,426
Likes: 229
From: Pennsylvania
Sounds like your slave cylinder for the clutch is bad. Possible pressure leak. Very easy to replace. Is your clutch fluid full? Follow the fluid line from the clutch master cylinder on the fire wall down to the side of the transmission. The fluid line connects to the slave cylinder at that point. A leaking slave cylinder can cause this problem once the temperature is hot.
Thread Starter
4th Gear
Joined: Apr 2016
Posts: 4
Likes: 0
That is something I was wondering about be the cause. Fluid is full, but will still get the car up on ramps and take a look to see if there is any sign of a leak.
Thanks for taking time to reply, Al
Thanks for taking time to reply, Al
Sounds like your slave cylinder for the clutch is bad. Possible pressure leak. Very easy to replace. Is your clutch fluid full? Follow the fluid line from the clutch master cylinder on the fire wall down to the side of the transmission. The fluid line connects to the slave cylinder at that point. A leaking slave cylinder can cause this problem once the temperature is hot.
Safety Car
Joined: Oct 2007
Posts: 4,426
Likes: 229
From: Pennsylvania
They can get air in the system also. You can bleed the slave cylinder, but with my past experience's with bad slave cylinders, I found it easier to just replace it with a new one, fill with new fluid and bleed it. No more problems! As I said, the bad slave cylinder would only act up when the temperature was up to normal. If the engine was off and the system was cold, it would gointo gear very easily.
Thread Starter
4th Gear
Joined: Apr 2016
Posts: 4
Likes: 0
Was ready to replace the slave cylinder. But first figured I'd put a few miles on the car just to verify. I did spray Fluid Film on the linkage, don't know if this helped or not. But have taken the car out twice now and seems to be shifting fine.
With the car getting so little use maybe things just need some use to loosen up.
Al
With the car getting so little use maybe things just need some use to loosen up.
Al
Racer
Joined: May 2015
Posts: 265
Likes: 21
From: Grand Rapids MI
My bet would be on old fluid; as in your brake system, it has a greater tendency to retain moisture as it ages, especially when helped along by decrepit rubber lines & seals. This water can boil at high temps and cause all manner of havoc in your hydraulics, preventing the clutch from disengaging fully & making for difficult shifts.
If the problem shows up again, I'd recommend a fluid replacement and a thorough inspection of all rubber bits (& slave cyl), replacing anything which shows signs of cracks, dry rot, or swelling--defects which are also aggravated by higher temps.
If the problem shows up again, I'd recommend a fluid replacement and a thorough inspection of all rubber bits (& slave cyl), replacing anything which shows signs of cracks, dry rot, or swelling--defects which are also aggravated by higher temps.
Last edited by 84Z51J; Apr 17, 2016 at 05:33 PM.
