I have a 6 cyl. 97 TJ with around 114k miles.
My exhaust "area" has been rattling at start and low power moments for a little while now. My Check Engine light came on a month ago and the computer said it was the O2 sensor.
NOW... the jeep will loose power and sputter (with some backfiring) every once in a while (on the highway and off) for a minute or so and then drive fine.
I was hoping to get some suggestions as to what it is and what the solution would be, before I take it in and have it checked out. (if it is the cat-converter, how much $$ am I looking at for this repair?)
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Sounds like a clogged cat to me. The rattling sound could be either a heat shield or the catalyst in the converter that's broken apart and bouncing around.
Yes it is the cat, everyone I know has had to replace their cat on the 97 TJ, its known to have problems, I had to replace the one on my old 97 TJ after about 35,000 miles, im surprised that you havent had to sooner.
I havn't replaced my cat on my '97 tj w/ 68k yet and i beat the living day lights out of it. I'll have to keep it in mind though since it is getting a little slugish but i don't think the crack in the manifold is helping.
well if it makes a noise just at idle why not just get a automotive stethascope (spelling). It comes with a metal rod that you place on different parts of the automobile and you can pinpoint where exactly the noise is coming from.