Im sure this is a stupid question, but... - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 11-08-2006, 04:28 PM
Registered User
 
Join Date: Jul 2006
Location: AR
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Im sure this is a stupid question, but...

Hey hotrodders, here's one:

I have rebuilt and engine and had the transmission rebuilt for a 76 Corvette 350. the transmission is a THM350 automatic. the engine starts no problem, but when i put the car into gear, nothing happens? is there supposed to be some connection between the brakes and the transmission that i have failed to connect that would not allow the transmission to change gears from park to anything else?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 11-08-2006, 04:47 PM
njbloodline666's Avatar
I Love VTec
 
Last photo:
Join Date: Jul 2003
Location: fairview nj
Age: 28
Posts: 306
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i know this sounds silly, but did u bolt the flexplate to the torque converter. also, did you remember to put fluid in the transmission?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 11-08-2006, 07:46 PM
Registered User
 
Last wiki edit: Mopar tapered axle rear brake conversion
Last journal entry: What I'm doing now...
Last photo:
Join Date: Jan 2002
Posts: 4,267
Wiki Edits: 49

Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by njbloodline666
........... did you remember to put fluid in the transmission?
This is a common error. Not only do you have to add fluid to the torque converter when you install it you also have to add quite a bit of trans fluid and lots of times people just forget to do that little task. Another common error before initial start-up is to add trans fluid till the dip stick say's full but once the engine starts and the trans pump is working it sucks all the fluid out of the pan to fill up the converter and nothing will happen when the trans is put in gear. Been there done that.

With the engine running check the trans fluid level and add accordingly.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 11-08-2006, 09:46 PM
Registered User
 
Join Date: Jul 2006
Location: AR
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
the flexplate is bolted on, and i put in fluid before i started it...but i haven't checked it since it has ran....good idea....anyothers if that is not it???
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 11-09-2006, 12:11 AM
willys36@aol.com's Avatar
Hotrodders.com Moderator
 
Last wiki edit: How to rebuild a Rochester Quadrajet 4MV carbureto...
Last journal entry: How to change auto shift timing on 200R4
Last photo:
Join Date: May 2002
Location: Bakersfield
Posts: 8,393
Wiki Edits: 21

Thanks: 1
Thanked 8 Times in 8 Posts
I've been working w/ auto trannys for nearly 40 years and fluid level in them is still black magic. I can never be really sure what the level is in them since you have to measure that with it running and hot so fluid is thin and splashing all around inside. Add to that I usually chrome my dip sticks which makes the fluid line invisible and I am really in deep water!! Anyway, I agree with the others, make sure you dumped the 20 or whatever pints they recommend in the unit on initial fill then top it off when it is running and warm.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 11-09-2006, 09:10 AM
Registered User
 
Join Date: Nov 2006
Location: New Port Richey, Fl.
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: Im sure this is a stupid question, but...

Transmission shop here.
You don't need to put fluid in the convert first, what we do is to put 4 qts in trans, start the car letting it idle in park, add another 4 qts, this will fill the converter itself. Now you have 8 qts in it, with the rear end lifted, put the car in reverse, reverse is in the back of the transmission this will allow the fluid to go all the way to the back of the trans, leave it in reverse for a seconds, then go through the rest of your gears. Now start checking your dip stick remember to check both side of the stick reading the highest point. depending on pan size, and cooler, it could take 8-10 qts. If your level is good and you don't have any movement from your trans, then either you didn't put the converter all the way in the pump or your pump or convert is bad.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 11-09-2006, 10:21 PM
willys36@aol.com's Avatar
Hotrodders.com Moderator
 
Last wiki edit: How to rebuild a Rochester Quadrajet 4MV carbureto...
Last journal entry: How to change auto shift timing on 200R4
Last photo:
Join Date: May 2002
Location: Bakersfield
Posts: 8,393
Wiki Edits: 21

Thanks: 1
Thanked 8 Times in 8 Posts
One time I didn't engage the dogs on the converter into the pump properly. I cranked the engine over and the dogs were pressing against the rotor of the pump and chewed it totally up. HAd to completely rebuild. Not a good story but is easy to do and would cause the problem you are having.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 11-09-2006, 10:26 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,150
Wiki Edits: 1659

Thanks: 383
Thanked 106 Times in 102 Posts
goes back to bolting on a pressure gauge to the tranny , port is on the side of the case ( passenger) near the vacuum modulator. 1/8 inch pipe thread plug in the port usually.


or open up a cooler line , then fire up the engine to see if the tranny pump is pushing fluid.
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 11-10-2006, 09:41 AM
Registered User
 
Join Date: Oct 2006
Location: VIRGINIA
Posts: 690
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I'm sure this is a stupid question,but...

Remember,there are no stupid questions. Only stupid people that ask questions.

My wife tells me that. I wonder what she means by that.

I think I'll ask her.

Last edited by briscoe; 11-10-2006 at 11:49 AM.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stupid timing question hlweyl Engine 5 02-11-2008 07:42 PM
Stupid question... but 5.0 freak Engine 5 08-31-2004 07:47 AM
very stupid question ? pjsplayhouse Body - Exterior 3 11-09-2003 04:21 PM
Stupid Question!!! !!! !!! Selwyn3III Engine 6 10-28-2003 05:43 PM
This may sound like a REAL STUPID question Nos General Rodding Tech 18 06-11-2003 07:04 AM


All times are GMT -6. The time now is 07:21 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.