Catalytic converter problems

[ZEN357]

I have a 2001 wrangler and the check engine light came on. The code says the Catalyst converter is the cause. My question is would this cause intermeted sluggish acceleration? Could a head gasket cause the catalyst problems? Sometimes after the jeep warms up it has a sluggish acceleration. Could this be the catalyst converter or the engine? How would I know?

I would start with replacing the O2 sensors with an NGK, Denso, or Walker brand.

https://www.jegs.com/webapp/wcs/sto...4143&submodel=4294829842&engine=&N=4294954406
Then move on to the cats if that does't fix the problem. Flowmaster has a direct fit.

https://www.jegs.com/webapp/wcs/sto...4143&submodel=4294829842&engine=&N=4294956030

 

[skrelnik]

Would onw of these be a good choice?

View attachment 107552

View attachment 107553

View attachment 107554

View attachment 107555

View attachment 107556

Those should be fine, the price is solid and if you want a higher quality material one it will cost you around $500-$600, like Magnaflow 447188 or Walker 81860 or 53461. The Walker 53461 is cheaper so I assume the honeycomb may be made from different materials, but you would need to look into that.

 

[ZEN357]

Walker makes good products. I just put a Walker exhaust system on my Step-Son's 2003 Buick Regal. Resonator had a crack all the way down it. Got a really good deal on the Walker exhaust from Rock Auto. Cost him $192.00 and my cousin's husband who is the head mechanic for a local garage put it on and did the state inspection for $168.00. Total $360 for a new exhaust installed. I think he got a good deal.

 

[RAC02]

Ok I told everyone I would check in. Well this was a new jeep for me. So in the midst of trying to find out the history of the jeep I pulled a carfax(manly to get a maintenance record) in doing that I found out the jeep I just got financed had the mileage rolled back. I have since returned it and got a refund. They sold it at 150,000 in fact it had 240,000. I have since bought another wrangler this time I checked everything out first. This one has a 2.5 in it. I love it!!! I have some issues I will be posting about them in separate thread. Thanks for all of your help.

 

[skrelnik]

Ok I told everyone I would check in. Well this was a new jeep for me. So in the midst of trying to find out the history of the jeep I pulled a carfax(manly to get a maintenance record) in doing that I found out the jeep I just got financed had the mileage rolled back. I have since returned it and got a refund. They sold it at 150,000 in fact it had 240,000. I have since bought another wrangler this time I checked everything out first. This one has a 2.5 in it. I love it!!! I have some issues I will be posting about them in separate thread. Thanks for all of your help.

Oh man, that sucks...but, it is awesome you were permitted to return it.

 

[RAC02]

Yea it really worked out because the 2.5 is perfect for me. But yes very wrong that they would do that. I guess it shows that the 4.0 can make it to 240,000

 

[Chris]

That does indeed suck, but as was said above, as least you were permitted to return it.

Thanks for the update!