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Mar
Dodge Dakota
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7/12/2003
07:42:30
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 Subject: Catalic converter rattle
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Message:
My Catalic converter just started to rattle. Rattle goes away once everything is warmed up. I just had it in the garage for another problem and the mechanic is telling me not to worry about it that it will burn its self out. To be honest I dont know much about these things and was wondering if the advice he gave me is valid.
Will this cause any problems? Truck is running good. MPG is around 20-22 (1994 3.9 V6 automatic)
Also engine light has not came on indicating any bad sensors.
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93 DakSport
Dodge Dakota
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7/12/2003
07:57:23
|  RE: Catalic converter rattle
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heatshield heatshield heatshield...check it 1st..mine rattles only because the honeycomb in the coverter broke off again i guess...still runs fine amazingly...cant figure y though?guttin it 2day if my friend ever shows up with the sawzall..but yeah..check the coverter by hitting it with your hand to test for breakage then look at the shield while truck is running..if its shield just bend it out of way..or rotate the coverter..good luck
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JasonB
Dodge Dakota
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7/12/2003
10:23:18
| RE: Catalic converter rattle
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Yes it WILL cause problems. Get an exhaust shop to replace it. Most will do that for $200-$250. If those parts that are rattling decide to stop up your converter, then you have a real problem.
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Osyrus
Dodge Dakota
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7/12/2003
14:31:40
| RE: Catalic converter rattle
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I had the same issue on my 97 dak, just got it back from the dealer yesterday. Damn thing rattled like hell!
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Jon
Dodge Dakota
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7/12/2003
19:20:52
| RE: Catalic converter rattle
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Mine rattled for a month before i fixed it, i knew what it was but i was too lazy to do it. I ended up taking the whole exhaust system apart because i had chunks of ceramic wedged in the muffler 3 feet behind the convertor.
Check the heat shield first though.
-Jon
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Mar
Dodge Dakota
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7/12/2003
21:21:33
| RE: Catalic converter rattle
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Message:
Thanks guys! I checked my heat shield and it doesn't appear to the problem. I pounded the converter and didn't hear anything. I never realized that the rattling is actually broken up pieces of ceramic!!! and that it could clog the converter and lodge in different parts of the exhaust!!! Thanks!
I read various post on here where guys cut them out or cleaned them out and reused them. (????) Is that feasible? Will it throw the sensors off or hurt the emission system.
Just boggles my mind that it goes away after everything is warmed.
Thanks again!
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Josh
Dodge Dakota
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7/12/2003
23:57:59
|  RE: Catalic converter rattle
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Message:
To clean the converter out is feasible and by far cheaper and easier but in most states you won't be able to get it inspected. I did it to my 96 Dakota and I am told it even boosts the horsepower a little. A word of warning though, if you do this the truck will be a bit louder but not much to worry about with a stock muffler.
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erkota
Dodge Dakota
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7/13/2003
01:29:42
|  RE: Catalic converter rattle
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I had the same problem with my 99 v6, and so did a buddy of mine with a v6 also. It was broken chunks of stuff in my cat. It annoyed tha hell outta me for a month so i went to tha muffler shop and got a new high flow cat and flowmaster 40 series muffler with dual exaust. It sounds awsome. If u get a new muffler get flowmaster. I get compliments from people all tha time about how great it sounds.
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Joe
Dodge Dakota
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7/14/2003
00:06:57
| RE: Catalic converter rattle
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Message:
Cut it.
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Mar
Dodge Dakota
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7/16/2003
11:09:47
| RE: Catalic converter rattle
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Message:
Thanks everyone for the replies. I really dont know very much about these things and never had one go out on any vehicle I owned. I live in Pa and there isnt any emission testing as of yet but I perfer to replace the converter vs gutting it out...just incase this state decides to go with the emission testing which I hear is coming soon.
Which is a good converter to go with? The exhaust that is on my truck is stock and everything else appears to be in good shape. Any suggestions on what converter to use and where to get one??
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fiddler
Dodge Dakota
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7/16/2003
13:52:01
|  RE: Catalic converter rattle
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Message:
For those whose Dakota is under 80,000 miles or 8 years, the catalytic converter is under warranty due to Federal emission laws. Call your Dodge dealer and they will replace it free. Rattle will disappear. This info is in your warranty book.
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Mar
Dodge Dakota
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7/16/2003
17:08:51
| RE: Catalic converter rattle
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Message:
Thanks but I have 122,000 miles. Is there a "recommended" replacement convertor or should I just ask for stock?
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Ted
Dodge Dakota
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7/17/2003
20:04:05
| RE: Catalic converter rattle
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Warrenty is up, is it still covered by that 8 year deal?
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Mar
Dodge Dakota
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7/17/2003
20:44:20
| RE: Catalic converter rattle
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Message:
Ted,
No. It's a 1994. Do you know where and what is the best place to buy a replacment convertor or whatever is recommended to replace with??
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RIch
Dodge Dakota
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7/21/2003
10:34:01
| RE: Catalic converter rattle
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Message:
My catalytic converter on my 97 V6 was rattling also. I ignored it until I went on a road trip and it clogged up about 400 miles from home. Roadside Mechanic dumped water down carb while flooring the accelerator and it cleaned the system out and got me back home. I freaked when I saw him dumping water into my carb but he assured me it was ok. I got home safe, so it turned out he was right. The truck runs fine but the rattling of the converter is driving me nuts. I ordered a new cat on the web from http://www.all-catalytic-converters.com. They charged me $143.00 for a direct bolt on replacement. I went ahead and ordered two O2 sensors also just to be sure everything will be in tip top shape.
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marks67ram
Dodge Dakota
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7/21/2003
12:18:25
|  RE: Catalic converter rattle
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Message:
Hey you dont need to replace the cat its not
needed you just let it rattle my brothers 94
dodge dakota rattles and my dad is an ase
highly certified technician and said not to worry
about the cat until it just falls completely apart
unless you emissions testing in your state
which you said you didn't so it is ok DONT
WASTE YOUR MONEY
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Rich
Dodge Dakota
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7/21/2003
12:33:32
| RE: Catalic converter rattle
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Message:
Hey Marks,
Did you read the part about the catalytic converter getting clogged?? If it is nothing to worry about how come I was stranded 400 miles from home when the thing clogged? I would agree with you that it is nothing to worry about if you are within a few miles of your home. However, If you are doing any kind of traveling out of your local area I would think twice. I just happened to find a honest mechanic in the middle of know where (south carolina)who was able to get me down the road again. I dont know if someone else will be as lucky.
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marks67ram
Dodge Dakota
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7/21/2003
12:41:23
| RE: Catalic converter rattle
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Message:
hey i dont remember him saying he was going
across the country he doesnt need to replace
it if it isnt clogged if it is just rattling dont worry
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Rich
Dodge Dakota
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7/21/2003
12:48:26
|  RE: Catalic converter rattle
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Message:
Marks you are correct,
I was just trying to point out that if his catalytic converter is rattling there is the possibility that whatever is causing that rattle could clog it and theoretically he could get stranded somewhere. If I would have known that could of happened to me I would have had mine replaced before I headed out on the open road. I am just thankful I didnt have my daughter with me and I was near a service station when it decided to conk out. Needless to say it turned my 12 hour drive into a 14 hour drive. Just a heads up!!
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marks67ram
Dodge Dakota
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7/21/2003
13:03:46
| RE: Catalic converter rattle
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Message:
Rich,
Got some info what i was trying to say is that
your cat got clogged not because of it rattling
but b/c of your truck is running to rich maybe
b/c you have put a computer in your truck b/c of
not running good or whatever it can rattle for a
life time but until it doesnt do its job anymore it
doesnt need to be replaced
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Mikes94Dakota
Dodge Dakota
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7/21/2003
22:21:02
| RE: Catalic converter rattle
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Message:
Mine usually rattles under wot ....and boy
can you hear it....sounds like the dang thing is
going to fall offf....other than that its seems to
be alright unless ur put your foot in it
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Mar
Dodge Dakota
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7/22/2003
09:54:19
| RE: Catalic converter rattle
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Message:
Thanks everyone for the replies. My truck too is running well and no loss of mpg. I have been reading on the net and the one site that's listed in the post. I see there are universal convertors and direct fit convertors. I like to keep my truck stock but do not know which one to purchase. I think too that they can become clogged at any given time...........not sure I want to chance it since this is my primary mode of transportation......and when it comes to taking chances.....I never seem to win. Thanks again everyone!
Can you tell me which convertor to purchase? A direct fit or a universal convertor. There's a big difference in the prices.
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Rich
Dodge Dakota
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7/22/2003
11:32:47
| RE: Catalic converter rattle
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Message:
Mar,
The direct fit OEM catalytic converter requires no cutting and no welding just a socket set and some other basic tools. The OEM catalytic converters are designed to specifically fit the year and model of your truck. The universal converters are designed to fit many different vehicles and you may have to cut or weld to get it to fit. Unless you are a metal bender I personally would stick with the OEM direct fit catalytice converter. It will save you a lot of pain and suffering in the long run.
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Shank
GenII
7/22/2003
23:10:49
| RE: Catalic converter rattle
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Message:
Hey Rich, If you ever see somebody attempt to pour water in the intake while flooring it, do you & me a favor by slapping the $h1T outta him! You run an EXTREMELY high risk of bending a rod by attempting to compress water! Not to mention blow-by into your Oil.
You got lucky this time.
It's easier to un-bolt the exhaust since there is no gasket and flush it out that way, also MUCH safer. After you reconnect the exhaust Road test it for at least 10 miles to heat it up & blow out any excess water.
Shank
If it don't work hit it with a hammer, Still don't werk? GET A BIGGER HAMMER!
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Mar
Dodge Dakota
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7/23/2003
06:58:17
| RE: Catalic converter rattle
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Message:
Rich,
Thanks for explaining the difference betweem direct fit and universal. I think I will go with the direct fit.
Thanks again for all your help!
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JTF
Dodge Dakota
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7/26/2003
00:27:37
| RE: Catalic converter rattle
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Message:
I had the same problem on my 97' dakota .... no biggie to fix.... cut it off on both ends ... stuck a peice of flex-pipe in there.... clamped it at both ends...
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