I don't have a Cat converter and my 02 is disconnected - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > I don't have a Cat converter and my 02 is disconnected

Poison Spyder DeFenders™ - "Tubeless" Jeep FendeAll Bilstein shocks & struts - Lowest Prices Ever and Santa Kolak Announces: Kolak Exhaust 20% Off Sale!

Reply
Unread 08-18-2011, 08:16 AM   #1
bogleparsons
Registered User
2013 JK Wrangler 
 
Join Date: May 2011
Location: fayetteville, NC
Posts: 1,905
I don't have a Cat converter and my 02 is disconnected

OK well I've been digging around inside my toy and realized the following to be a fact.

I have no catalytic converter - been removed at some point

I have no mass air flow sensor - this i think is normal??

My 02 sensor wires are just cut off- someone thought it was not necessary


But my jeep runs great, and i think i get around normal gas mileage, should i be concerned?

bogleparsons is offline   Reply With Quote Quick reply to this message
Unread 08-18-2011, 09:52 AM   #2
R3V413
Registered User
2000 TJ Wrangler 
 
Join Date: Aug 2011
Location: Blissfield, MI
Posts: 179
Do you have emissions testing in the state where you reside? If so has it passed the tests? If it has then I wouldnt worry about it. What would you consider "normal" gas mileage?
__________________
[B]JEEP[/B]=Just Empty Every Pocket

"Politics is war without bloodshed while war is politics with bloodshed."-Mao Zedong

"For Those Who Fought For It, Freedom Has A Flavor The Protected Will Never Know"-Unknown

00 TJ on 31x10.5x15's- DD
89 YJ-Under the Knife
R3V413 is offline   Reply With Quote Quick reply to this message
Unread 08-18-2011, 10:03 AM   #3
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,699
You need the O2 sensor to regulate the fuel output. Without it you are not going into closed loop and it will run but not efficently. I bet you are only seeing 14 MPG max. There isnt a Mass sensor on a jeep are you talking about the MAT Manifold air temp?
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 08-18-2011, 10:09 AM   #4
bogleparsons
Registered User
2013 JK Wrangler 
 
Join Date: May 2011
Location: fayetteville, NC
Posts: 1,905
No we don't have emissions for vehicles older than 1995.

I get about 10-14 mpg yes I was under the impression it was to be expected.
bogleparsons is offline   Reply With Quote Quick reply to this message
Unread 08-18-2011, 10:25 AM   #5
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,699
No, you should see at least 17 on the freeway. you should definitely fix that. I had donating money to the oil companies. They already pick our pockets bad enough.
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 08-18-2011, 10:42 AM   #6
bogleparsons
Registered User
2013 JK Wrangler 
 
Join Date: May 2011
Location: fayetteville, NC
Posts: 1,905
Agreed , I'm a tight wad and hate gas prices.

I don't do any hi-way or freeway driving really... I live 5 miles from work and that's on the outskirts of the city.

I'm going to look into an 02 sensor, why not it should be sorta cheap.
bogleparsons is offline   Reply With Quote Quick reply to this message
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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.