Need Help! 94 YJ won't pass emissions - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-21-2008, 09:02 PM   #1
Newb
 
Join Date: Oct 2008
Location: Indiana
Posts: 7
Need Help! 94 YJ won't pass emissions

I just bought my first Jeep and can't get it to pas the clean air check here in Indiana. After the first test I changed the plugs, wires, cap and rotor, and repaired the vacuum line between the air box and the PCV. I took it back and had it tested again today and it failed worse than the first time. The hydrocarbons and CO levels are much higher now. I looked at several sites online and there a ton of suggestions, but I thought I would look for some more Jeep specific info if anyone has had similar problems. My Jeep is a 2.5L with a % speed manual trans. Thanks. Also what should the normal operating temp be? Mine runs at or just above 210. Do I need a new thermostat or just flush the cooling system? thanks!!!

ChiroSean is offline   Quote Quick Reply
Old 10-21-2008, 09:36 PM   #2
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
that temp is fine, and you probably need a new cat.

__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 10-22-2008, 10:45 AM   #3
Newb
 
Join Date: Oct 2008
Location: Indiana
Posts: 7
Thanks. Some people told me to check the O2 sensor, MAP sensor, and MAF sensor. Also they said that changing the engine oil to fresh oil before I take it back for another test might help. I also found a vacuum line up near the passenger side fire wall that I can not find a place where it would go??? My jeep doesn't have AC or cruise control or anything so, not sure where it would go. Any suggestions? Thanks again.
ChiroSean is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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.



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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pass me that soap box please! jeeptales Off-Topic 35 08-18-2008 04:31 PM
help my 89 wont pass e check mike18 General Jeep Discussion 11 04-20-2007 11:29 AM
1988 yj wont pass smog gerritvan YJ General Discussion Forum 4 10-12-2006 11:17 AM
California emissions? TJ Blue TJ General Discussion Forum 3 07-10-2006 06:01 PM
Brand new BLK soft top, skins, used full BLK uppers, spice pass. upper and rear sides Negoshe8n Classifieds Archive 7 04-14-2006 04:25 AM


logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:08 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC