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

a/trans problem

Thread Tools
 
Search this Thread
 
Old Aug 6, 2010 | 11:01 AM
  #1  
93v's Avatar
93v
Thread Starter
Racer
15 Year Member
 
Joined: Aug 2005
Posts: 252
Likes: 2
From: lancaster pa
Default a/trans problem

Does anyone know what causes a a/t to become overfilled?It's a 4l60,93 lt1.Had the car 5 years now w/no trans. problems,lately it's been leaking fluid from the pan and i think up the side where the vent is and the cooler lines attach.Can't tell for sure yet exactly where it's leaking.I'm thinking the only thing that could raise the level in the trans. is coolant from the radiator since thats the only place the fluid gets close to any other fluid??Possible leak where the fluid travels through the radiator??BTW the fluid is somewhat pink instead of red color.I was looking at my factory service manual and can't find any reason for my problems other than it saying possible too high pressure.I'm not loosing any anti-freeze that I can tell yet into the trans fluidthanx
Reply
Old Aug 6, 2010 | 12:41 PM
  #2  
Flame Red's Avatar
Flame Red
Le Mans Master
25 Year Member
All Eyes On Me
Liked
Loved
 
Joined: May 1999
Posts: 6,517
Likes: 1,304
From: Windermere FL
Default

I think you probably have the correct diagnostic - leak in the tranny cooler. Never heard of one before though, but I guess anything is possible.

You have a couple of options.

You can bite the bullet and just replace your radiator with a Dewitt's and get much better cooling too. Or you could take your radiator to a radiator shop and have them repair it, or go with a a new stocker. The other option would be to just bypass the radiator and install a separate tranny cooler and not even go thru the radiator. But that is just a bandaid unless you do something with the radiator. Many of us have a seperate tranny cooler that mounts right in front of the AC condensor.

Either way, afterwords, you need to do a complete and through tranny fluid exchange. You can do it yourself although it can be a bit messy or have a shop do it for about $100. Get it done before you ruin your tranny! Do not delay. A tranny rebuild is going to cost you an arm and a two legs.

And I would do a complete engine coolant flush and refresh too!

Last edited by Flame Red; Aug 6, 2010 at 12:58 PM.
Reply
Old Aug 6, 2010 | 11:21 PM
  #3  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Default

When you check your fluid level, is it high on the dipstick in park with the motor running, or are you assuming the fluid is high because it's leaking from the pan?
Reply
Old Aug 8, 2010 | 07:55 AM
  #4  
93v's Avatar
93v
Thread Starter
Racer
15 Year Member
 
Joined: Aug 2005
Posts: 252
Likes: 2
From: lancaster pa
Default

Originally Posted by 383vett
When you check your fluid level, is it high on the dipstick in park with the motor running, or are you assuming the fluid is high because it's leaking from the pan?
Thanx guy's,The fluid level is high in park w/the engine running.The level is high on the stick w/cold engine.I have a lift but it's a mid-rise that blocks alot under the middle of the car.I guess I'm gonna have to start digging.I wanted to put a pit in my garage to work on things like this.On closer inspection I saw fluid leaking from the rear end of the tranny too.Time to just yank the thing out.Car has 220,000 mi. on it,I don't know if the tranny has ever been rebuilt or not,I find it hard to believe it's never been touched w/this many miles.
Reply

Get notified of new replies

To a/trans problem





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