rattling catalyst converter???
#1
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Join Date: Jan 2010
Location: Omaha, Nebraska
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Year: 2000
Model: Cherokee
Engine: Inline 6 4.0 liter
rattling catalyst converter???
My brother cherokee has a high-flo cat on it, and it recently started rattling, it sounds like there are loose metal pieces inside of it rattle around. I tried putting a glove on and seeing if I could hold it still but it still rattles. Any ideas???
#6
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Location: Buckeye, AZ
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Year: 2001
Model: Cherokee
Engine: 4.0
get a new cat.. the catalyst comb sometimes just breaks off, not a typical thing but possible. mostly happens when the engine starts miss firing.. the miss sends an elevated amount of unburnt fuel down the pipe which then ignites inside the cat (as designed) but the elevated amount of fuel means a bigger bang of course and can actually knock stuff loose. it will also melt off the platinum or palladium and blow it out the pipe which lessens the cats effectiveness. obdII systems should throw a code for a failing cat.
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