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Old 08-13-2003, 10:04 AM   #1
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Default Weird rattle, any ideas?

Im getting this weird rattle coming from some where up front, but it only does it at 2500 rpms, but it doesnt do it when i drive a little harder than normal? i cant really pin point where the rattle is coming from because it only does it when im driving. Does anyone have any ideas what could be causing this?
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Old 08-13-2003, 03:17 PM   #2
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Default Re: Weird rattle, any ideas?

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Originally Posted by Red Baron
Im getting this weird rattle coming from some where up front, but it only does it at 2500 rpms, but it doesnt do it when i drive a little harder than normal? i cant really pin point where the rattle is coming from because it only does it when im driving. Does anyone have any ideas what could be causing this?
Loose heat shield on the catalytic convertor?
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Old 08-13-2003, 11:45 PM   #3
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Loose pieces inside the catalytic converter. Mine is doing this now. Most evident from a stop to about 15 mph. Get under the car and thump on the cat converter, see if it sounds like something is loose.

Either that or loose heat shields on the exhaust manifolds perhaps. Don't ask me how to fix those, I haven't figured that out yet on mine.
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Old 08-14-2003, 02:20 AM   #4
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what do u mean "loose heat sheild on the cat"? the metal thats attached to the floor or is that the metal around the cat that has the holes at the bottom? i knocked on the peice thats attached to the floor it seemed like pretty secure. (i thought maybe that could be the prob). im gonna try bangin on the cat itself see if thats it
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Old 08-14-2003, 02:56 AM   #5
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Ya, I was going to say that too. I had the rattling a while back. Happened a little at idle and more when I was driving at low rpms. I never fixed the problem, but it went away in a couple weeks. I didn't know how it went away when I didn't do anything to fix it. But I was glad it was gone. It was so annoying.
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Old 08-14-2003, 11:38 AM   #6
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Quote:
Originally Posted by Red Baron
what do u mean "loose heat sheild on the cat"? the metal thats attached to the floor or is that the metal around the cat that has the holes at the bottom?
The metal around the cat. It'* like an outer layer, with an air gap behind it, so the blazing-hot skin of the convertor itself can't come into contact with stuff like dry grass or newspaper litter that could catch fire. Sometimes when they fall off you'll see them lying in the middle of the traffic lane, squashed flat.

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i knocked on the peice thats attached to the floor it seemed like pretty secure. (i thought maybe that could be the prob). im gonna try bangin on the cat itself see if thats it
Yup, check it out.
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Old 08-14-2003, 12:48 PM   #7
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Quote:
Originally Posted by TelePlayer
Loose pieces inside the catalytic converter.
This is NOT good. trust me. mine clogged, forced exaust pack up into the engine and did some internal damage on a 1000 mile old engine. throw a high flow on there.
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Old 08-14-2003, 02:13 PM   #8
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i cant really afford to spend any money on the car right now ( gettin married next monrth) could i just take it off and run a pipe? my emissions are good for 2 years. could it hurt?
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Old 08-14-2003, 02:25 PM   #9
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i'd say go for it. just make sure you don't get caught cause some states have heavy penalties. and you probably won't loose any torque b/c your supercharged.
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Old 08-14-2003, 02:47 PM   #10
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Ya, be careful and don't tell anyone about getting rid if it. The penalty here is $10,000.
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