Suddenly lost power

[Chapman4266]

I was driving back into town and suddenly lost power. If I floored it, it was worse and sounded like the cats. It limped home at 1/4 throttle, but got worse quickly. It started 4 miles from home and we were doing 12 mph by the time I got to my house. I’m pretty sure it’s the cats, but I’m only familiar with the way Chevy reacts to that. Not sure about mopar when it comes to that. Didn’t think it would be that sudden. Any ideas?

 

[Chapman4266]

Btw, 06 Rubicon with 4.0 manual. Stock.

 

[Steel City 06]

Any codes? Can you hook up an OBDII reader?

 

[Chapman4266]

Any codes? Can you hook up an OBDII reader?

I don’t have one. Best I can do in my small town on a Saturday is limp it to Auto Zone. I’m gonna pull the main cat loose and see if it improves.

 

[Steel City 06]

You can read the codes without a reader
https://www.quadratec.com/jeep_knowledgebase/article-24.htm

 

[Chapman4266]

Problem solved for now until I can afford an exhaust system. I pulled the cat loose at the muffler and hollowed it out. Throws a code now, but it has never run better. Hooked it back up and it has more power and still is quiet. Thanks.