6-speed Concern/Question
Thread Starter
Instructor
Joined: Oct 2006
Posts: 246
Likes: 2
From: Elk Plain WA
St. Jude Donor '11
6-speed Concern/Question
I drove a nice 89 C4 Vert this afternnoon that I'm contemplating buying. I noticed a couple times when going from 1st to 2nd the shifter wanted to slide over to 4th instead of 2nd. When I tried to correct it there was resistance and a slight grind insued (nothing bad).
Is that a shifter issue or something internal to the tranny. I drive nothing but sticks so I don't think it's the driver in this case.....could be....but not likely!
The car otherwise seems very healthy and immaculate for an 89.
Is that a shifter issue or something internal to the tranny. I drive nothing but sticks so I don't think it's the driver in this case.....could be....but not likely!
The car otherwise seems very healthy and immaculate for an 89.
Pro
Joined: Dec 2006
Posts: 514
Likes: 0
From: Kennewick Washington
Sounds to me like the CAGS has not yet been disconnected. One way to tell would be to see if it wants to shift 1 to 4 under hard acceleration, or at greater than 20 MPH. Normal CAGS would allow a smooth upshift, if not there may be a linkage or transmission issue.
Safety Car
Joined: May 2007
Posts: 3,651
Likes: 10
From: Apple Valley MN
Sounds like CAGS (Computer-Aided Gear Selection) - I'm not sure what year they introduced it. At a certain combination of RPM or speed, you are forced to shift from 1st to 4th (real annoying), and can damage the transmission if you try to shift into another gear. A light should appear on the dash at this time, also. There's a $30 gizmo you can buy to defeat this "feature".
Thread Starter
Instructor
Joined: Oct 2006
Posts: 246
Likes: 2
From: Elk Plain WA
St. Jude Donor '11
Oh - Thats Likely the Reason
I had forgotten about that feature in the 6-speed. Never owned a corvette 6-speed myself, but I do remember reading some threads with that feature in them. I feel less concern now. Thanks for the education.
Melting Slicks
Joined: Dec 2004
Posts: 2,954
Likes: 2
From: Obama=death for America
I drove a nice 89 C4 Vert this afternnoon that I'm contemplating buying. I noticed a couple times when going from 1st to 2nd the shifter wanted to slide over to 4th instead of 2nd. When I tried to correct it there was resistance and a slight grind insued (nothing bad).
Is that a shifter issue or something internal to the tranny. I drive nothing but sticks so I don't think it's the driver in this case.....could be....but not likely!
The car otherwise seems very healthy and immaculate for an 89.
Is that a shifter issue or something internal to the tranny. I drive nothing but sticks so I don't think it's the driver in this case.....could be....but not likely!
The car otherwise seems very healthy and immaculate for an 89.
Navigator
Joined: Mar 2007
Posts: 9
Likes: 0
When attempting to shift into 2nd from 1st, if you're experiencing more of a resistance than a slide, it could be the synchro gear needing replacement. When the synchro gear needs replacement, the telltale signs are grinding and difficulty shifting into the problematic gear. It's not a cheap fix. If the seller is a dealer, tell the salesman you want it repaired. If it's a private sale, make sure you knock off at least $500 from the asking price. It could very well require more money to take care of this problem, if it's the synchro.
Description of Double Clutching
Originally Posted by Article
But even with synchronizers, a driver trying to shift from fifth gear into second could have some trouble.
Last edited by Aspect; Nov 30, 2007 at 11:29 AM.
Thread Starter
Instructor
Joined: Oct 2006
Posts: 246
Likes: 2
From: Elk Plain WA
St. Jude Donor '11
Same Car - Another Question - Seats ??
Since this is a thread I started, maybe an unrelated question will be tolerated. Same car! Has anyone ever seen an 89 Convertible with cloth seats. I have no idea if they are factory or not?
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
Yup, cloth seats were available up to 1994 when leather became standard. I don't think they are very common, but they were available.
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Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
Skip Shift
Yes my 94 had that dam skip shift. What a pain. I ordered a pcm from PCMFORLESS had the skipshift programmed out,had the fans programmed to turn on at 210, and a performance tune. Lower temp allowed more timing. much faster throttle response on the pcmforless. I kept the stock pcm to switch back and forth. There was a difference.