rattling in the catalytic converter - JeepForum.com

 
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post #1 of 9 Old 05-11-2004, 10:49 AM Thread Starter
c-dogg
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rattling in the catalytic converter

i've picked up a new rattle coming from the catalytic coverter
or right before/after it over the weekend. it sounds like a piece
of metal rattling around in there. any i deas on what the hell
that's all about?


83 cj7
-stock
-31x10.5 procomp mudterrain's
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post #2 of 9 Old 05-11-2004, 01:46 PM
jadams68
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Yes, when the cat gets old, the honeycombs within it break apart and rattle around inside. Very annoying. Time for a new cat.

-----------------------
I used to own two CJ's...Perhaps a 3rd is in the future?
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post #3 of 9 Old 05-11-2004, 02:01 PM
ROBARR
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I had a heat shield come loose once, broke the weld on one end, caused a bad rattle, just went ahead and pulled the thing off, problem solved.

74 CJ-5 304 T-15
89 Toyota Pkp 4-Banger
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post #4 of 9 Old 05-14-2004, 01:06 AM
Greezy Gringo
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Cat?! What's that? :P
Mines an '80 and Texas doesn't require cat's on vechiles 83 and older.

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'80 CJ7
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post #5 of 9 Old 05-14-2004, 07:27 AM Thread Starter
c-dogg
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Quote:
Originally Posted by Greezy Gringo
Cat?! What's that? :P
Mines an '80 and Texas doesn't require cat's on vechiles 83 and older.
well i live in good ole pennsyltucky, and up here, the emissions
laws are a ***** and only getting toughter. i'm pretty sure you
need to have a cat unless you drive under 5k miles a year.

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post #6 of 9 Old 05-14-2004, 07:32 AM
OL YELLAH
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That's correct. No cats on my Jeeper. I live in Pottstown by the way. Lansdale's not too far off.

If you want your Jeep to run a little better and think the cat is all clogged up, jab it with a screwdriver and let all the junk come out. She'll be running hot then.

1979 Jeep CJ-5; 1972 258 (Pacesetter Header, Weber Carb, Wrangler Aluminum Intake, 2.5" Exhaust Straight Through w/ Thrush Mufflers); 2.5" BDS Lift; 1" Daystar Body Lift, Herculiner; RJS Belts; 33" Interco Trxus M/T Tires; Xtreme Alloy Wheels; 2.5" Perfomance Wheel Spacers; TFI Upgrade.
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post #7 of 9 Old 05-27-2004, 03:50 PM
ddjeep
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Question Catalytic Converter

C-dogg,

Did you ever figure this out? I'm having the same problem.
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post #8 of 9 Old 05-27-2004, 05:31 PM
bwatsonxj
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rattle can

the same thing happened to my mine , no strict laws down here either (fla). i put a piece of straight pipe in its place. mine was bad enough that it was turning inside its self so the honeycombs weren' straight, and more than likely killing horsepower and mileage. take it out knock the guts out and if you fail emissions then you can replace it.
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post #9 of 9 Old 05-28-2004, 02:35 PM
pushead
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Quote:
Originally Posted by bwatsonxj
the same thing happened to my mine , no strict laws down here either (fla). i put a piece of straight pipe in its place. mine was bad enough that it was turning inside its self so the honeycombs weren' straight, and more than likely killing horsepower and mileage. take it out knock the guts out and if you fail emissions then you can replace it.
I would not put in the straight pipe personaly. I would take the cat off know out the honey comb into a bucket. Weld the cat back on, this way you can still bring your jeep to shops and wont automaticly fail emmisions if they look under your rig to see if you have one.

Last but not least take that bucket of honey comb to a metal recycling shop and turn it in for a few bucks. That platinum inside is worth a few pennies.
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