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Author Message   Robin Cooper (Cooper1) New Member Username: Cooper1 Post Number: 24 Registered: 12-2003 Posted on Monday, February 09, 2004 - 10:39 pm:    I had to think of something to get everyone's attention Anywho, i need to know what the signs are for bad (cats) catalytic convertors. My 97' Disco is making a rattling noise while sitting at idle that seems to be coming from under the vehicle somewhere towards the front. It's a fairly loud noise. Someone mentioned to me that the matrix might have broken off (whatever that means)inside the cat. converter. Any input would be very helpful. Thanks. -Unrelated plug here: If you haven't seen the movie Super Troopers, rent it immediately. Thats all.   Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 630 Registered: 02-2003 Posted on Monday, February 09, 2004 - 11:01 pm:    Don't worry about it....bits break off periodically.....went through that 70k ago....ultimately the bits get small enough to pass kinda like a kidney stone...   Mark Sager (Msager007) New Member Username: Msager007 Post Number: 39 Registered: 05-2003 Posted on Monday, February 09, 2004 - 11:16 pm:    I had to replace the cats in my 96 this past summer, the noise got loud enough that it sounded like my engine was knocking.   Nathan Hindman (Nathanh) Member Username: Nathanh Post Number: 131 Registered: 07-2002 Posted on Tuesday, February 10, 2004 - 12:57 am:    Robin, It's probably just your cats. Nothing to worry about unless you need to pass emissions. My D1 failed emissions this summer, once I put a new y-pipe in, most "bad" gasses were reduced by about 90% (25 gpm went down to 2.5 gpm). Thanks, Nathan Hindman http://www.pangaea-expeditions.com   eric johnson (Eric2) Senior Member Username: Eric2 Post Number: 258 Registered: 05-2003 Posted on Tuesday, February 10, 2004 - 12:28 pm:    Cats are cheap to get replaced. Do a search. I've read where some guys get them from Summit racing, pretty cheap - <$100. Or just go to Midas or whoever is the big muffler shop near you. Chris won't do it 'cuz his nickname is "cheap ba$tard"   Robin Cooper (Cooper1) New Member Username: Cooper1 Post Number: 25 Registered: 12-2003 Posted on Tuesday, February 10, 2004 - 12:52 pm:    Ah HA HA. And Yessss i agree. They do need to be replaced. What i'm really hoping is that Land Rover will replace them for free, 8 years or 80K miles. If anything i gotta get the noise fixed so it won't sound like there's marbles in my pipes. I'll check out the ideas above. Thanks fellas.