2.5 L Throttle body upgrade - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 05-30-2013, 10:42 PM Thread Starter
djhrn1
Registered User
1990 YJ Wrangler 
 
Join Date: Mar 2013
Location: Kulpmont
Posts: 60
2.5 L Throttle body upgrade

OK have a question, Was complaining the other day to one of my friends who is a mechanic about the lack of power in my 1990 yj with the 2.5 L. He suggested changing to a 4.0 L throttle body and this should help some. I'm wondering what's compatible. Does he mean the whole throttle body or just a spacer and what years should I be looking to swap from. Is there any other way with some simple bolt-ons to achieve any better performance. Help a newbie out here I always appreciate some good advice. Working on a budget. Thanks Dave

djhrn1 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 05-30-2013, 10:52 PM
Xpress
Registered User
1996 ZJ 
 
Join Date: Dec 2010
Location: The Great Big Box
Posts: 5,927
Garage
Since your YJ is a 1990 it should be Throttle Body Injection (TBI) from the factory. This is a proprietary unit that cannot be swapped or replaced. You basically have one big injector that is mounted inside of the throttle body before the butterfly valve, not 4 separate injectors like 1991-1995 2.5L YJ's.

All about that unibody life.
Xpress is offline  
post #3 of 4 Old 05-31-2013, 07:14 AM
dcocch
Registered User
1989 YJ Wrangler 
 
Join Date: Jan 2012
Location: Minneapolis
Posts: 175
Xpress is correct...I have the same issue with my 89.
dcocch is offline  
post #4 of 4 Old 06-01-2013, 12:55 AM Thread Starter
djhrn1
Registered User
1990 YJ Wrangler 
 
Join Date: Mar 2013
Location: Kulpmont
Posts: 60
Is there anything you can do to upgrade street performance that's a cheap fix or junk yard swap
djhrn1 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



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