How to Replace Catalytic Converter - Jeep Cherokee Forum
Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech
Log In 
Search


How to Replace Catalytic Converter

Reply
 
 
 
 
Thread Tools Search this Thread
Old 09-13-2011, 04:05 PM   #1
Junior Member
 
jstrabley's Avatar
 
Join Date: May 2010
Location: St. Louis, MO
Posts: 48

View jstrabley's Photo Album My Photos
1998 Cherokee
Default How to Replace Catalytic Converter

The cat converter has rattled on my 98 XJ since I bought it about a year and a half ago. Now, when I give it some gas, it's unresponsive for a bit and kind of sputters out before taking off. I'm also getting a "chugging" like sound when accelerating. I'm assuming that the cat converter is clogged.

My questions are:

1. Does it sound like my assumption on the bad cat converter is correct?
2. How do I go about replacing it cheaply? Can I cut the old one out with a hack saw and simply slide the new on into the exhaust pipe and fasten with exhaust clamps? That sounds too easy and I'm sure I'm missing something, but can't find a write up on it.

Please keep in mind that I do not want my CEL to be on and would need to be able to pass emissions.
__________________
The object of war is not to die for your country but to make the other bastard die for his.

Gen. George S. Patton
jstrabley is offline   Reply With Quote
Join Cherokee Forum

Join CherokeeForum.com Today - It's Totally Free!

Do you love your Jeep? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Jeep Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your jeep, and have a great time with other Jeep Cherokee fans.. Whether your an old timer or just bought your Jeep you'll find that CherokeeForum.com is a great community to join. Best of all it's totally free!

Join CherokeeForum.com Today! - Click Here JOIN FOR FREE


-->
Old 09-13-2011, 04:18 PM   #2
CF Veteran
 
brutalxj's Avatar
 
Join Date: Jan 2010
Location: WI
Posts: 1,505

View brutalxj's Photo Album My Photos
'99 Cherokee
Default

I would guess you need a tune up way before the cat is clogged. And the rattling is just the heat shield on the out side of the cat or on the under-body of your XJ. But if in fact you are right that is one way to change out your cat. If I were you I would use band clamps and not those crappy u-bolt ones that always leak and rust so fast they are not re useable. Welding it in is still the best way. Oh if your cel isn't on now then it isn't you cat. I would also take the time to clean your 02 sensors now as well as they can cause the issues your describing. That only costs a half a can of brake clean and should be done every tune up unless you hate money?
__________________
Check out my head light mod.
brutalxj is offline   Reply With Quote
Old 09-13-2011, 04:18 PM   #3
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,151

View djb383's Photo Album My Photos
1998 Cherokee
Default

The cat on our '98 was a factory "slip fit" at both ends and clamped. Depends on how rusty things are as to how easily it "un-slips". Ours popped right off at both ends.
__________________
Man Law - hoods should be raised at least once a week....have a look. A genious did not invent the speed bump.....an idiot did.
djb383 is offline   Reply With Quote
Old 09-13-2011, 04:22 PM   #4
CF Veteran
 
brutalxj's Avatar
 
Join Date: Jan 2010
Location: WI
Posts: 1,505

View brutalxj's Photo Album My Photos
'99 Cherokee
Default

Quote:
Originally Posted by djb383 View Post
The cat on our '98 was a factory "slip fit" at both ends and clamped. Depends on how rusty things are as to how easily it "un-slips". Ours popped right off at both ends.
Sounds like yours was already replaced I have been under at least 20 97-99 and none of them were like that.
__________________
Check out my head light mod.
brutalxj is offline   Reply With Quote
Old 09-13-2011, 04:33 PM   #5
Newbie
 
hico's Avatar
 
Join Date: Apr 2011
Location: Hico, Texas
Posts: 23

View hico's Photo Album My Photos
2001 Cherokee
Default

X2!!!
I would also take the time to clean your 02 sensors now as well as they can cause the issues your describing. That only costs a half a can of brake clean and should be done every tune up unless you hate money?
__________________
'01 xj sport - 2" fat bobs garage lift, skyjacker hydros, rubi's, LT245/70/16's, 12586 magnaflow catback
hico is offline   Reply With Quote
Old 09-13-2011, 04:42 PM   #6
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,151

View djb383's Photo Album My Photos
1998 Cherokee
Default

Looks original to me, but maybe not. Muff and cat had the Chrysler PentaStar on the cases.
Attached Thumbnails
How to Replace Catalytic Converter-004.jpg   How to Replace Catalytic Converter-005.jpg  
__________________
Man Law - hoods should be raised at least once a week....have a look. A genious did not invent the speed bump.....an idiot did.
djb383 is offline   Reply With Quote
Old 09-13-2011, 06:05 PM   #7
CF Veteran
 
brutalxj's Avatar
 
Join Date: Jan 2010
Location: WI
Posts: 1,505

View brutalxj's Photo Album My Photos
'99 Cherokee
Default

First time I have seen a set up like that come stock. Normally see it all one welded piece or with a bolt flange thing.
__________________
Check out my head light mod.
brutalxj is offline   Reply With Quote
Old 09-13-2011, 06:24 PM   #8
::Regional Moderator::
 
UsmclovesXJ's Avatar
 
Join Date: Aug 2011
Location: Jacksonville, NC
Posts: 4,734

View UsmclovesXJ's Photo Album My Photos
1993 Cherokee
Default

On my the cat is welded to the down pipe and clamped from there on.
__________________
every XJ has a story. whats yours?

Quote:
Originally Posted by cf1k1 View Post
Yeah, who knows? Tonight you may take her on a midnight mud run mixed with other "activities" ... like UsmclovesXJ does...
...Wait!!!

CHEROKEE FORUMS MOST WANTED
PROJECT- XJ
UsmclovesXJ is offline   Reply With Quote
Old 09-13-2011, 06:53 PM   #9
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,151

View djb383's Photo Album My Photos
1998 Cherokee
Default

I believe the '98 FSM shows it's all clamped, except for the muff/tailpipe, they are welded.
__________________
Man Law - hoods should be raised at least once a week....have a look. A genious did not invent the speed bump.....an idiot did.
djb383 is offline   Reply With Quote
 
 
 
Reply

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech



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

Advanced Search

Posting Rules
You may not post new threads
You may not 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



All times are GMT -5. The time now is 04:28 AM.


This site is in no way affiliated with Jeep or Chrysler.

Emails Backup