Anyone kno nething about the 4 speed auto? What year start useing? bolt into 3 speed? - JeepForum.com

 
LinkBack Thread Tools
post #1 of 7 Old 06-18-2004, 02:50 PM Thread Starter
jeepcj7
Registered User
 
Join Date: Jan 2003
Location: connecticut
Posts: 162
Anyone kno nething about the 4 speed auto? What year start useing? bolt into 3 speed?

I was just wondering if anyone knows what year they started using the 4 speed transmission in a TJ, and does it have overdrive? Whats the final drive? AND MOST important will it bolt right up to my 1997 sahara 3 speed auto? What is the tranny modle number, and what other vehicles used the same trans? THANX IN ADVANCE....PLEASE advise.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jeepcj7 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 06-18-2004, 02:59 PM
BaaBaa
Registered User
2000 TJ Wrangler 
 
Join Date: May 2004
Location: Probably at work...
Posts: 187
Quote:
Originally Posted by jeepcj7
I was just wondering if anyone knows what year they started using the 4 speed transmission in a TJ, and does it have overdrive? Whats the final drive? AND MOST important will it bolt right up to my 1997 sahara 3 speed auto? What is the tranny modle number, and what other vehicles used the same trans? THANX IN ADVANCE....PLEASE advise.
I had my tranny rebuilt last week... asked some of the same questions to the mechanic and got these responses:

In early 90's, Jeeps with 3-spd auto had a bolt-on kit available that put in an overdrive gear. The guy could not find whether this was still available, and believed he "might have heard" that it was never a very good solution. He explained that the 4 speed Jeep's now come with is really a 3-spd overdrive (I'm not sure exactly what that means.)

Sorry this isn't more helpful... I had trouble getting much info in the forum about the auto tranny's, so I hope you have better luck!

--

Black 2000 TJ Sport
Black Jeep Club Version 2.0 Member #66
BaaBaa is offline  
post #3 of 7 Old 06-18-2004, 03:17 PM
n4phth4
Registered User
 
Join Date: Mar 2004
Location: Jersey
Posts: 180
Hmm. I am staring at the TJ 2004 service manual, page 21-73.

The 4spd tranny is the 42RLE. Dunno what year DC started using it, or whether it will bolt right into your ride. Yes, it has overdrive. The ratios are:

1st - 2.84:1
2nd - 1.57:1
3rd - 1:1
overdrive: 0.69:1
reverse: 2.21:1
n4phth4 is offline  
post #4 of 7 Old 06-18-2004, 04:38 PM
blupupher
Registered User
 
blupupher's Avatar
 
Join Date: Feb 2003
Location: this one
Posts: 1,362
Started in 2003, would probably bolt up, but you need a computer to control it.
blupupher is offline  
post #5 of 7 Old 06-23-2004, 09:11 AM Thread Starter
jeepcj7
Registered User
 
Join Date: Jan 2003
Location: connecticut
Posts: 162
thanx for the help, any one know the price of one of these "42RLE"


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jeepcj7 is offline  
post #6 of 7 Old 06-23-2004, 09:13 AM Thread Starter
jeepcj7
Registered User
 
Join Date: Jan 2003
Location: connecticut
Posts: 162
also neone kno about the "bolt on overdrive", or hear on it


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jeepcj7 is offline  
post #7 of 7 Old 06-23-2004, 09:33 AM
n4phth4
Registered User
 
Join Date: Mar 2004
Location: Jersey
Posts: 180
Quote:
Originally Posted by jeepcj7
thanx for the help, any one know the price of one of these "42RLE"
Ask your favorite 4x4 shop representative, or your favorite dealer.

Hmmm.. a quick google reveals this on allpar.com about the 42RLE:

"The transmission used in the Jeep Liberty and six-cylinder LX cars. It is essentially the four-speed car/minivan transmission known in earlier years as the A-604, adapted for rear wheel drive use."

You should try out google. I'm sure you will find the answers to your questions. ;-)
n4phth4 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user 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 e-mail address for yourself.



Email Address:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Is my TF999 Auto a 3-speed or a 4-speed rhbeardsworth YJ Wrangler Technical Forum 4 10-22-2009 09:46 PM
What year has auto but isnt a 3 speed vinniety Wrangler General Discussion 3 01-16-2009 11:33 PM
First year for 4 speed auto? Biker TJ Wrangler Technical Forum 5 08-31-2008 07:41 AM
Might Swap 6-speed manual for 4-speed auto... JeepinYahoo TJ Wrangler Technical Forum 14 11-15-2006 08:20 PM
Have 6-speed manual swap in a 4-speed Auto? JeepinYahoo TJ Wrangler Technical Forum 8 11-13-2006 04:18 PM

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 Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome