Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

TH400 question: slow movement when cold?

Thread Tools
 
Search this Thread
 
Old Dec 18, 2024 | 09:24 AM
  #1  
fst100's Avatar
Thread Starter
TECH Fanatic
15 Year Member
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Dec 2008
Posts: 1,229
Likes: 24
From: lancaster, pa
Question TH400 question: slow movement when cold?

i recently swapped from 4L60E to a TH400 with RMVB and transbrake. i noticed on a cold start and ambient temps lower than 40*F that the car barely moves on its own at idle in gear. even shifting between gears theres virutally no feeling of engagement. i didnt want to apply too much throttle if it'd cause burning clutches and all. is this typically normal with the TH400?
Reply
Old Dec 18, 2024 | 05:32 PM
  #2  
91 Z28's Avatar
TECH Fanatic
5 Year Member
Photogenic
Photoriffic
Liked
iTrader: (3)
 
Joined: Oct 2016
Posts: 1,588
Likes: 374
From: Armstrong BC
Default

Originally Posted by fst100
i recently swapped from 4L60E to a TH400 with RMVB and transbrake. i noticed on a cold start and ambient temps lower than 40*F that the car barely moves on its own at idle in gear. even shifting between gears theres virutally no feeling of engagement. i didnt want to apply too much throttle if it'd cause burning clutches and all. is this typically normal with the TH400?
How much fluid is in the trans?? Kind of sounds like the T brake isn't fully releasing. I probs wouldn't drive it at all until I got to the bottom of it
Reply
Old Dec 19, 2024 | 06:15 PM
  #3  
truckdoug's Avatar
9 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Nov 2013
Posts: 6,389
Likes: 558
From: Portlandia
Default

probably ought to put a 0-300 pressure gauge on the line pressure port in the case and see whats really going on
Reply




All times are GMT -5. The time now is 05:12 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE