C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Auto shifting

Thread Tools
 
Search this Thread
 
Old Aug 12, 2021 | 05:21 PM
  #1  
Geoff Leach's Avatar
Geoff Leach
Thread Starter
Heel & Toe
 
Joined: Dec 2020
Posts: 18
Likes: 0
From: barnsley england
Default Auto shifting

My 2nd to 3rd auto box shift is taking some time to change it start when going down a steady incline at 2500 rpm and the revs dropped to about a 1000 then when I put the throttle a little the engine stayed in second and at 3500 so I moved it into second then into 3rd and it shifted but constant light cruising at say 50mph and it down shifts to second and I have to say snick it into neutral then into 3 and it changes , ordered a new modulator adjustable ,, the pipe holds vacuum to the manifold from the modulator and the manifold is pulling 16inch vacuum at tickover , Slacked off the kick down cable alittle so it’s not binding at full throttle as well .the car has only done 7300 mile so the gearbox is new the oil is clean , next thing change the oil and filter in the transmission.any help appreciated
Reply
Old Aug 12, 2021 | 05:28 PM
  #2  
MelWff's Avatar
MelWff
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 18,734
Likes: 2,582
Default

You asked the same question here, why start a second thread?
https://www.corvetteforum.com/forums...-shifting.html
Reply
Old Aug 12, 2021 | 08:36 PM
  #3  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Default

Modern logic: More is better....
I was wanting to respond, but I have no idea what his 'symptoms' are...other than the trans doesn't shift properly.
Reply
Old Dec 15, 2021 | 08:12 AM
  #4  
Geoff Leach's Avatar
Geoff Leach
Thread Starter
Heel & Toe
 
Joined: Dec 2020
Posts: 18
Likes: 0
From: barnsley england
Default

didn't get a reply from both

Reply
Old Dec 15, 2021 | 07:42 PM
  #5  
diehrd's Avatar
diehrd
Safety Car
 
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
Default

Sounds like it could be a worn governor gear or the governor hanging up
Reply

Get notified of new replies

To Auto shifting





All times are GMT -4. The time now is 06:09 PM.

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