catalytic converter

I am looking to see if anyone has any old catalytic converters with the 3 bolt pattern flange (see pic #1 circle) laying around that would be willing to cut off about 6 inches of pipe with the flange. I will pay for shipping and your time Or if you happen to know of an aftermarket piece that...

Hey everyone, Here’s another TJ forum post about overheating at idle bear with me here. I’ve done research on what could be causing an overheating issue at idle and can’t quite narrow down what the issue is. Some Context: My Jeep when driving in stop-go traffic will slowly creep up in...

I have a 97 TJ that I recently bought back in November. Since I have owned it I have put new plugs, distributor, rotor, and wires. I have pulled the throttle body and completely and thoroughly cleaned the throttle body. I first cleaned the IAC and that seemed to be the one thing that helped...

I just purchased a 2000 4.0 TJ that had its catayltic converter and muffler stolen. The previous owner added a glass pack muffler and did not replace the catalytic converter. One CEL code (P0455) is showing when I scan. I replaced the gas cap since the oring was very cracked and the CEL is...

First time Jeeper, 98 TJ Sahara 4.0, feels like it’s starving for fuel, almost wants to die out when it starts. Thought it was bad gas, but now I’m thinking it’s catalytic converter. Has high miles, I’m learning here, but I’m thinking that’s what the issue is possibly being plugged up? Maybe the...

In December I experienced a flashing check engine light while driving. I replaced all 4 O2 sensors and those seemed to smooth everything out. That thread: https://wranglertjforum.com/threads/check-engine-light-flashed-while-driving.67087/ Since then I've experienced two instances of hesitation...

On earlier TJs with the single catalytic converter, is there any problem with putting the cat closer upstream from the stock location? Stock it is way back there between the transfer case and transmission. I've been running mine about 12-18" further forward for clearance without any issues, but...

Need a little installation help on my Evan Fischer mini-cat replacement for ‘04 rubicon. There were no installation instructions in the box, I can't find them online, and the OEM bolts and captive retainers (see pics below: retainers in black) that hold the cat flange to the manifold are...

Hey all! Thanks in advance for all the help as always! 1998 4.0 manual transmission with 96k So here’s the scoop! For about the past 9 months my TJ has had an exhaust leak. First was the flange. Tightened that up and it helped. Slowly got loud again but not crazy loud. Finally this past...

I THINK THIS IS MY SECOND POST AND I HAVE BEEN LOOKING AROUND QUITE ABIT ABOUT THIS ON THIS FORUM AND OTHERS. I have 2005 Rubicon 2 door inline 6 100k miles had her since 2018 automatic 42rle been getting CA emissions 4 o2 sensors : Current Issue p0031 p0037 p0051 and p0057 . I had these...

I’m replacing my exhaust headers on a 2006 TJ Rubicon 4.0 and the catalytic converters don’t look right (though I’ve never looked at a dual cat before). The rear bank looks fine with a nice looking honeycomb. The front bank appears to be missing the honeycomb though the sides look consistent and...

Hello to my fellow Jeepers! I have a 2005 stock Rubicon auto with about 149k miles on it. I need some insight on some problems I have been having lately. The following may or may not be all connected. Alright so last summer I had about 140k miles or so and the spark plugs had never been...

So as a young guy who likes to be loud and party I decided it’s a good idea to get an exhaust system. I’ve decided to get me headers, cut the cats off, and then I still have no clue if I want to cherry bomb it and have the tip end off to the side or if I want to get either a muffler/ resonator...

I will try to make this short and sweet. Last week I filled up my 2000 Jeep TJ and minutes later the check engine light came on. The code that came back was P0420 Bank 1. The check engine light remained on all week until I got gas today and, boom, the check engine light is gone. I ran my OBD...

Hey everyone! First time posting here and am hoping for some advice. My 14 year old son bought a 2006 TJ. It's a manual 2.4L and runs great but we are slowly repairing varies things along the way before he gets his drivers license. The error codes we're receiving are: P0420 P0456 P0137 P0138...

04-06 Jeep Wrangler (TJ) Flowmaster Third Catalytic Convertor New with clamp, 49 state legal...Third convertor that is by the belly pan and muffler only. *NOT CALIFORNIA

Hey y’all. I’m back at this place again. My $200 used catalytic converters have run their course. I’m losing the precat in bank 1. If anyone has a used one from a part out (particularly in CA) from a 2006 or similar TJ/LJ...I would be interested. I am really trying to avoid paying 900+ for a new...

So I have a 2000 Jeep Wrangler with a 2.5l 4 cylinder and for the last 2 months I have been struggling with getting the cat monitor to ready. So to start off at the beginning, I went to get my Jeep smogged and it failed due to the cat monitor not being ready and after doing some research I came...

As noted in the title, I think my cats have reached EOL. I think this Jeep lived most of its life in Oklahoma, the chassis was/is pretty clean with little or no rust when we bought it 2 years ago with 103k miles. No CEL’s being thrown, no odd sounds coming from the exhaust system. But it seems...

Aloha, My new to me 2005 Jeep LJ had some power loss issues going up hill and at highway speeds the other day. After reading through the various posts regarding my symptoms I concluded a clogged CAT. I did a temp test on all 3 CATs and the rear had a temp drop that was pretty clear. I removed...