Transmissions and Drivetrain Need help with your trans? Problems with your axle?

HELP! Wont shift into third, guy says might be Modulator Tube

Thread Tools
 
Search this Thread
 
Old Jun 25, 2015 | 05:12 PM
  #1  
Scootermunch's Avatar
Thread Starter
Member
 
Joined: Feb 2011
Posts: 407
Likes: 0
From: Somewhere between NY and LA
Car: 1989 Trans am GTA
Engine: 305 TPI
HELP! Wont shift into third, guy says might be Modulator Tube

auto trans.

some guy said it might be the modulator tube. i had it parked since november, and now it wont shift into third gear, everything else shifts fine. he said spiders like to go up there.

is this a thing? i did a search and didnt see anything.

if it is, how do i fix it??
Reply
Old Jun 27, 2015 | 08:24 AM
  #2  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: HELP! Wont shift into third, guy says might be Modulator Tube

Assuming this is your '89 GA, the trans is a 700R4, which doesn't have a modulator. When you say it won't go into 3rd, what exactly is happening?

Does it try and the engine just rev's up? Does it stay in 2nd and pulls to redline?

RBob.
Reply
Old Jun 27, 2015 | 04:58 PM
  #3  
Scootermunch's Avatar
Thread Starter
Member
 
Joined: Feb 2011
Posts: 407
Likes: 0
From: Somewhere between NY and LA
Car: 1989 Trans am GTA
Engine: 305 TPI
Re: HELP! Wont shift into third, guy says might be Modulator Tube

Originally Posted by RBob
Assuming this is your '89 GA, the trans is a 700R4, which doesn't have a modulator. When you say it won't go into 3rd, what exactly is happening?

Does it try and the engine just rev's up? Does it stay in 2nd and pulls to redline?

RBob.
thanks for the response.

yes, that is exactly what it does.
Reply
Old Jun 27, 2015 | 05:21 PM
  #4  
NowhereFast's Avatar
Senior Member
 
Joined: Feb 2011
Posts: 653
Likes: 5
From: Long Island, NY
Car: 87 Trans Am, 99 WS6, 16 Mustang GT
Engine: LB9, LS1
Transmission: 700R4, T56
Axle/Gears: 3.42 Posi, 4.10 Posi
Re: HELP! Wont shift into third, guy says might be Modulator Tube

The tranny needs to rebuilt. Clutches are fried.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
History / Originality
27
May 10, 2023 07:19 PM
TreDeClaw
Theoretical and Street Racing
11
Jun 22, 2021 08:21 PM
Bryan F
Tech / General Engine
2
Aug 18, 2015 02:28 PM
Street Lethal
Interior
7
Aug 14, 2015 08:25 PM




All times are GMT -5. The time now is 01:43 AM.