C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

4+3 shifter wont shift

Thread Tools
 
Search this Thread
 
Old Jun 12, 2018 | 10:40 PM
  #1  
vettecrazy88's Avatar
vettecrazy88
Thread Starter
Pro
15 Year Member
 
Joined: Dec 2005
Posts: 709
Likes: 1
From: Lakewood Colorado
Default 4+3 shifter wont shift

Cant get shifter in reverse to get key out

when in 1st gear position and clutch is let out car moves in reverse

when shifter in any other gear and clutch let out revs drop and car strains but will not move.

can move shifter to any of forward 4 shift locations but not reverse.

Checked master and fluid low but not too low. Filled. No change in result

Not sure what to check.

Please advise.
Reply
Old Jun 12, 2018 | 10:53 PM
  #2  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,891
Likes: 591
From: New Port Richey FL
Default

Raise car up climb under car clear the shifter by hand, simply move main shifter arm's to a straight up/down position because you may be in 2 gears at the same time because of a worn side cover ***** and shifter arm's.
so after confirming the T-10 & OD are in nutraul hopefully the wheels will turn by hand. then you can start looking into the cause of the misalignment, the fact you say it moves back in first almost makes me wonder if though rare has happened a broken shifter fork in the OD unit.

Last edited by s carter; Jun 13, 2018 at 08:46 AM.
Reply
Old Jun 13, 2018 | 04:25 PM
  #3  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,891
Likes: 591
From: New Port Richey FL
Default

Originally Posted by ihatebarkingdogs
The transmission is in reverse at all times. When shifted into any forward gear, it doesn't move because it is in the forward and reverse at the same time. The output shaft is locked solid. Get it out of reverse. (put the shifter in a forward gear like 4th. Go under the car and move the reverse lever (furthest aft on the transmission)forward). The shifter itself is possibly worn and out of adjustment enough to have allowed the shift lever to move without moving the reverse lever with it. Readjust the shifter.


There is no "shift fork" in the overdrive. The overdrive is never in "neutral". Either direct or overdrive.
Ok fine in the adapter plate
Reply
Old Jun 13, 2018 | 06:05 PM
  #4  
vettecrazy88's Avatar
vettecrazy88
Thread Starter
Pro
15 Year Member
 
Joined: Dec 2005
Posts: 709
Likes: 1
From: Lakewood Colorado
Default

Originally Posted by ihatebarkingdogs
The transmission is in reverse at all times. When shifted into any forward gear, it doesn't move because it is in the forward and reverse at the same time. The output shaft is locked solid. Get it out of reverse. (put the shifter in a forward gear like 4th. Go under the car and move the reverse lever (furthest aft on the transmission)forward). The shifter itself is possibly worn and out of adjustment enough to have allowed the shift lever to move without moving the reverse lever with it. Readjust the shifter.


There is no "shift fork" in the overdrive. The overdrive is never in "neutral". Either direct or overdrive.


Under the car and moved forward levers to vertical position. Tried to move reverse lever but will not budge with hand force. Ok to get more aggressive? Is it the reverse lockout?

Tried to shift into reverse at shifter and will not go in to that gear. Smooth shifting to all others now.

Just FYI, checked movement of slave cylinder when clutch depressed and released and it moves the rod and arm. That implies hydraulics OK, correct?
Reply
Old Jun 13, 2018 | 06:29 PM
  #5  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,891
Likes: 591
From: New Port Richey FL
Default

Originally Posted by vettecrazy88
Under the car and moved forward levers to vertical position. Tried to move reverse lever but will not budge with hand force. Ok to get more aggressive? Is it the reverse lockout?

Tried to shift into reverse at shifter and will not go in to that gear. Smooth shifting to all others now.

Just FYI, checked movement of slave cylinder when clutch depressed and released and it moves the rod and arm. That implies hydraulics OK, correct?
OK with the 2 levers Vertical you can't move the Reverse lever, it should not require a whole lot of force, is the Key in the unlock position when testing . Have you tried to remove the Reverse linkage and take the Shiftier out the field of possible Problems and turn the reverse with a wrench.
Reply
Old Jun 15, 2018 | 08:41 PM
  #6  
vettecrazy88's Avatar
vettecrazy88
Thread Starter
Pro
15 Year Member
 
Joined: Dec 2005
Posts: 709
Likes: 1
From: Lakewood Colorado
Default

Moved reverse lever to forward and now can lift shifter reverse lock and get the shifter in reverse position. When I walked the shifter through the 5 positions it would not go into reverse again. Went under and moved lever again and it would go into reverse position again.

New discovery though is that I cannot get key out.
Reply
Old Jun 15, 2018 | 09:16 PM
  #7  
vettecrazy88's Avatar
vettecrazy88
Thread Starter
Pro
15 Year Member
 
Joined: Dec 2005
Posts: 709
Likes: 1
From: Lakewood Colorado
Default

Not sure if that is cause or symptom
Reply
Old Jun 15, 2018 | 10:40 PM
  #8  
vettecrazy88's Avatar
vettecrazy88
Thread Starter
Pro
15 Year Member
 
Joined: Dec 2005
Posts: 709
Likes: 1
From: Lakewood Colorado
Default

So seems to be smooth as silk now. Will test on road tomorrow.

Embarrassingly the key not coming out was because I had overturned it to ACC.

Rectal helmet problem again.
Reply

Get notified of new replies

To 4+3 shifter wont shift

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski




All times are GMT -4. The time now is 06:51 PM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE