Weird problem?????

[RubiconExp.XJ]

Well i went wheelin yesterday and when i got back on the road.....my car got really sluggish....like it took alot of effort to get to 25 and then once it got there it wouldn't pass 45 if you tried it like down shift to 25 or so it was really weird...i don't know if its the transmission.....alot of people said i have a clogged cat....does that sound right to ya'll

[tompatjr]

Could be a clogged Cat! Happened to a freind of mines CJ, kept lossing power but ran nice and smooth other than that. I think you can burn up a motor if you drive like this very much.

[Alaskaflyr]

Just had the same thing go wrong on a buddies CJ, It was the Cat!!!!! I'm not sure what exactly he did to clear it, I'll get a hold of him and let you know.

Gary

[8Mud]

If it´s running that bad, you should be throwing some kind of codes. Did you do the key check and see what stored codes you have?

[RubiconExp.XJ]

i think you might have to replace the whole cat plus mine has 112,000 so i guess its about time i get a new one....

[sgtmack]

For what it's worth, we've found that 9 times out of 10 something caused the converter to melt. Usually from running rich. If you did melt the cat, check out the engine performance stuff so you don't kill the new one.

[RubiconExp.XJ]

okay thats a good idea so what exactly am i looking for?

[xjbmx]

Mine does the same thing after going thru water or mud. I think its just a sensor of some sort because it always goes away (like the sensor dries up or something if thats possible) and my cat is relatively new.

[Pietro]

late model jeep cats typically go around 100k miles but they can break internally if you hit it alot of the rocks. simple diag of the problem, unbolt the cat and loosen the pipe just enough so the exhaust gas won't have the enter the cat. drive the jeep, if it drives fine (except for the noise of course) the cat is clogged, if not then you have other problems

[Canopener]

Mine will do this every once in a while when wheeling. It is the same speed too, 45 mph. Someone told me it was a limp mode that the computer puts the vehicle in if something isn't right. Mine always went away after sitting overnight. It seems to reset. More than likely it is a sensor. Don't go and change your cat without doing some testing. It could be a big waste of money.