Th400 not locking into gear

Thread Tools
 
Search this Thread
 
Old February 26th, 2020, 03:32 PM
  #1  
Registered User
Thread Starter
 
Reese Neis's Avatar
 
Join Date: Oct 2019
Posts: 47
Th400 not locking into gear

Does anyone know what would cause the transmission in my 1970 cutlass to not lock into gear it goes into park just fine and I can kinda get it to stay in neutral if I move it back and forth until it locks but other then that it won’t stay in any other gear
Reese Neis is offline  
Old February 26th, 2020, 04:09 PM
  #2  
Registered User
 
Fun71's Avatar
 
Join Date: Feb 2013
Location: Phoenix, AZ
Posts: 13,860
I'm not sure what your issue is. Is it that the trans will not go into gear, or is the issue with the shifter itself? Hard to determine by what you posted.

What exactly is "it" in the statement below? The car? The shifter?
Originally Posted by Reese Neis
I can kinda get it to stay in neutral if I move it back and forth until it locks
Fun71 is offline  
Old February 26th, 2020, 04:22 PM
  #3  
Registered User
Thread Starter
 
Reese Neis's Avatar
 
Join Date: Oct 2019
Posts: 47
The shifter and linkage is what I’m referring too I can run the shifter through the gears but the shifter wont lock/stay in a gear like I don’t even have to push brake in or push the shifter in to get it to move it’ll just ratchet through of of them
Reese Neis is offline  
Old February 26th, 2020, 04:27 PM
  #4  
Registered User
 
Fun71's Avatar
 
Join Date: Feb 2013
Location: Phoenix, AZ
Posts: 13,860
What vehicle is this, and what type of shifter?

Does the transmission go into gear, or is it just the shifter is "loose"?
Fun71 is offline  
Old February 26th, 2020, 04:38 PM
  #5  
Running On Empty
 
Vintage Chief's Avatar
 
Join Date: Jul 2018
Location: Earth
Posts: 18,253
Originally Posted by Fun71
What vehicle is this....
OP states it's a 1970 Cutlass. Not sure if column or center console though.
Vintage Chief is offline  
Old February 26th, 2020, 05:18 PM
  #6  
Registered User
 
72455442RA's Avatar
 
Join Date: Jan 2009
Location: Rainy Washington State
Posts: 499
so the firm clicking between gears is not felt now when you manually change gears ?

if so ... it sounds like what the th350's used to do and shear the pin inside,,,on the detent lever thing
that happened on my 4x4's a couple times back int the 80's
72455442RA is offline  
Old February 26th, 2020, 06:24 PM
  #7  
Registered User
 
matt69olds's Avatar
 
Join Date: Jan 2010
Location: central Indiana
Posts: 5,282
If your trying to say the shifter moves without feeling a gate or bump for each gear position, most likely the detent spring has broken.

This is the detent spring for the rooster comb, th400 trans. A TH350 will have something similiar
matt69olds is offline  
Old February 26th, 2020, 06:36 PM
  #8  
Registered User
 
Yellowstatue's Avatar
 
Join Date: Jan 2009
Location: Too close to Toronto!!
Posts: 4,087
I think you are saying that the trans will not stay in PARK...Stepping on the brake will not result in anything other than brake lights illuminate and brakes will hopefully stop vehicle. This era of vehicle does not require one to step on the brake to shift out of park.
Yellowstatue is offline  
Old February 27th, 2020, 08:05 AM
  #9  
Old(s) Fart
 
joe_padavano's Avatar
 
Join Date: Mar 2007
Location: Northern VA
Posts: 47,444
How about you start by telling us EXACTLY which shifter you have? Is it factory or aftermarket? Did the car come with it or was it retrofitted? Who did the work? Is this a new problem or has it always done this? Photos of the shifter would help.
joe_padavano is offline  
Old January 31st, 2024, 09:35 PM
  #10  
Registered User
 
iamfaster's Avatar
 
Join Date: Jan 2024
Posts: 1
I have a th400 transmission that suddenly stopped locking gears and just stays in neutral and if turn i off it will eventually go but only stays in first and goes back to neutral.
iamfaster is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bfg
General Discussion
17
January 14th, 2020 12:53 AM
Docs72
Transmission
7
October 8th, 2019 08:02 PM
4SPEED67
Transmission
4
February 21st, 2018 05:41 PM
quentinnw2
Transmission
1
December 11th, 2013 08:50 PM
one4theroad
Transmission
1
March 18th, 2010 11:31 PM



Quick Reply: Th400 not locking into gear



All times are GMT -7. The time now is 04:37 AM.