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

Help with 4+3 problem (Problem #1)

Thread Tools
 
Search this Thread
 
Old Jul 29, 2002 | 07:59 PM
  #1  
TAC's Avatar
TAC
Thread Starter
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,797
Likes: 0
From: Thompson Falls MT
Default Help with 4+3 problem (Problem #1)

My '87 4+3 is giving me a little problem. Sometimes right after I start the car I cannot shift out of Reverse--it feels like the shifter is jammed tighter than a drum. Then, after a little clutch pumping and slight movement in reverse I can yank it out but at that point I can have problems getting it into first. The shifter can be moved around but refuses to push into first. It feels like the shifter is up against something it can't move. I sometimes have a similar problem when I come to a stop light. I put the car in neutral and sit there and when I go to put the car in 1st it just doesn't want to. After a brief shifting into another gear I can then get it in 1st with no real problem.

More information:

-I can ALWAYS shift into first when coming to a stop if I shift right from another gear while still moving. The problem of not going into first arises when I leave it in neutral with the clutch out and then try to put it in first. I can shift into 1st at 20-25 with no problem...no grinding or anything.

-I don't have a problem ever shifting into reverse-only out of reverse.

-Filter was changed on OD unit < 10,000 miles ago and fluids were replaced in both tranny and OD with synthetic. Gear oil in tranny and AT fluid in OD. 35k miles on car/tranny.

-I have no problems at all with OD.

One knowledgeable friend suggested I lose the synthetic (Redline I believe) and go back to standard oil--at least in the tranny. He experienced a very similar type lockup problem and solved it with a simple fluid change back to OEM type stuff.

Could it be a simple shifter alignment problem?

Please Help....
Reply
Old Jul 29, 2002 | 08:10 PM
  #2  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default

When coming TO the stop do you pop the car in neutral before stopping? If so the gears aren't perfectly lined up and you need to move the car a little or put it in another gear to line em' up. :) I've experienced the "stuck in R" thing before and just moving the car literally 1/4" backwards frees it up nice.
Reply
Old Jul 29, 2002 | 08:28 PM
  #3  
TAC's Avatar
TAC
Thread Starter
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,797
Likes: 0
From: Thompson Falls MT
Default Re: (scorp508)

Wow, Scorp...you must live here! Thanks for the quick answer. Yes, I probably do shift to neutral before coming to a stop at the lights but I don't think I do it when pulling into the garage. I'm pretty sure I'm in first until I stop and then go to reverse to turn the car off. Then...for some reason...the next time I start the car and go to shift out of reverse it binds.

At this point you don't think there's a problem with the tranny and OD? The clutch was replaced a year ago and I don't think it's bad since I don't grind gears. I'll try to be more observant about exactly the conditions that lead up to the binding but it happens so infrequently I forget about it. Thanks again..



[Modified by TAC, 4:28 PM 7/29/2002]
Reply
Old Jul 29, 2002 | 11:05 PM
  #4  
Rich B.'s Avatar
Rich B.
Melting Slicks
20 Year Member
 
Joined: Aug 2001
Posts: 2,516
Likes: 0
From: Lockport NY
Default Re: Help with 4+3 problem (TAC)

Mine doesn't like going into 1st when cold; when warmed up it goes right in. I just think it's worn synchros...

As Scorp said, if you're at a stop in N, with clutch out, and want to get in 1st quick, put it in 3rd or 4th first, then shift into 1st. That "lines up" the gears and it will slide right in...

The reverse problem sounds like your key-lock cable is binding, probably at the shifter. It may be kinked, rusted, or have a foreign object in the shifter area where the cable attaches. You'll be amazed what you'll find when you pull the console and side panels off...


[Modified by Rich B., 10:08 PM 7/29/2002]
Reply
Old Jul 30, 2002 | 12:31 AM
  #5  
TAC's Avatar
TAC
Thread Starter
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,797
Likes: 0
From: Thompson Falls MT
Default Re: Help with 4+3 problem (Rich B.)

Mine doesn't like going into 1st when cold; when warmed up it goes right in. I just think it's worn synchros...

As Scorp said, if you're at a stop in N, with clutch out, and want to get in 1st quick, put it in 3rd or 4th first, then shift into 1st. That "lines up" the gears and it will slide right in...

The reverse problem sounds like your key-lock cable is binding, probably at the shifter. It may be kinked, rusted, or have a foreign object in the shifter area where the cable attaches. You'll be amazed what you'll find when you pull the console and side panels off...


[Modified by Rich B., 10:08 PM 7/29/2002]
Thanks. If it continues I'll look into pulling the console apart this winter.
Reply
Old Jul 30, 2002 | 07:26 AM
  #6  
Rich B.'s Avatar
Rich B.
Melting Slicks
20 Year Member
 
Joined: Aug 2001
Posts: 2,516
Likes: 0
From: Lockport NY
Default Re: Help with 4+3 problem (TAC)

Thanks. If it continues I'll look into pulling the console apart this winter.
...Sounds like a lot of work, huh?... :D

It's not. It becomes a 10 minute job after you've done it a couple of times. 15 minutes with pulling the seat!... :lol:
Reply
Old Jul 30, 2002 | 09:18 AM
  #7  
tarheelracer's Avatar
tarheelracer
Melting Slicks
15 Year Member
 
Joined: Apr 2002
Posts: 3,305
Likes: 2
From: Havelock NC
Default Re: Help with 4+3 problem (TAC)

I have the same problems on mine too. I figured it was a synchro problem that I don't need to worry about as long as it still shifts, because of NO money :( . If I can't get it in gear I'll just let the clutch out and start all over, things always line up the 2nd time. If I'm rolling at all when I shift to reverse (with clutch fully depressed) I get a nasty ouch gear scrape sound :eek: A very punk untrusted mechanic said it was a driveshaft brake, or something that he couldn't fix yada yada yada because I have such "rare" trans. yada yada yada.
Reply
Old Jul 30, 2002 | 10:29 AM
  #8  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default

If I'm rolling at all when I shift to reverse (with clutch fully depressed) I get a nasty ouch gear scrape sound :eek:
Never shift into reverse if not at a stop. There are no synchros on that gear. Always come to a stop first.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Jul 30, 2002 | 10:52 AM
  #9  
tarheelracer's Avatar
tarheelracer
Melting Slicks
15 Year Member
 
Joined: Apr 2002
Posts: 3,305
Likes: 2
From: Havelock NC
Default Re: (scorp508)

I do, but when I first got the car, I was unaware of that fact. I never shift on a roll now.
Reply

Get notified of new replies

To Help with 4+3 problem (Problem #1)





All times are GMT -4. The time now is 07:23 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
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-8
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-9
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