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kota on 20s
Dodge Dakota
8/15/2001
19:49:10
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 Subject: my cat rattles what the heck?
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Message:
well about a month agao i have noticed a rattling noise comming from under my truck. it does it a lot in the morning when its cold and when i downshift. today i went under there and hit the cat with my hand and sure enough it rattles like a dimond back rattler.
has anyone had this happen? performance is still there, unless it has been slowely getting worse and i just havent noticed.
Eric
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Rascal
Dodge Dakota
8/15/2001
19:50:44
| RE: my cat rattles what the heck?
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Message:
Its a broken cat...it has ceramic in it and when it breaks, it will rattle worse when cold.
Been there, done that.
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Dave
Dodge Dakota
8/15/2001
19:51:19
| RE: my cat rattles what the heck?
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Message:
Check the fuse yet? Most ppl forget to.
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kota on 20s
Dodge Dakota
8/15/2001
19:57:29
| RE: my cat rattles what the heck?
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holly cow rascle your respons was just over 1min that has to be a record!! thanks.
oh yea did the dealer replace the cat under warranty?
Eric
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Rascal
Dodge Dakota
8/15/2001
22:47:57
|  RE: my cat rattles what the heck?
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Message:
no, the car I had, (an Oldsmobile) was about 11 years out of warranty..but the dealer now might as it is part of the emissions system covered by Federal law.
I just happened to see your question and responded, I hope it helps you out. Good luck from a retired Harley mechanic.
Rascal
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Lesley
Dodge Dakota
8/15/2001
23:21:18
| RE: my cat rattles what the heck?
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Kota on 20s - that rattle has become a very familiar sound to me - I am on my third cat. The dealership should replace it (I think the emissions warranty is 8 years). Thanks to the advice of this board- I was able to determine that my 02 sensors were gone & the fuel ratio was off -thus overheating the cat & shattering the ceramic. Good luck with yours, should get it replaced before your check engine light comes on.
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lando981
Dodge Dakota
8/16/2001
02:22:38
| RE: my cat rattles what the heck?
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Message:
Yeah I thought that My cat rattle but it did'nt at all I got it checked out by some local mopar mechanic (Idon't know how to spell that word and to lazy to look it up so don't make fun of me) and he said that it was something lose in My dak. it rattled rain or shine cold or hot, pissed me off. He got up under there after we had taken it down the block and he said to rev it up w/ the clutch in and it still made the rattle but jus faintly then he said to rev the engine with the ckucth in so i did that nothing rattle at all. then he asked does Muy tranny wine I said, "hell yeah" cause it wines real bad. then he said well you have a tranny in the process of going bad. he said it will be sometime b4 you need one prolly 20k miles but I will need one for sure in the near futre Point is make sure you have the right rattle. I thought it was my cat for about 3 months. Hint if your tranny wines it may be the tranny. 97 ,RC, 5.2. 3.90 LSD!! With the my black truck, blacked out windows, and a v8 that will toast them, I have BLKITUP as my licesence plate!!!!!! Jus got it in the mail today pretty proud of it!!!!! ANyway good luck kota on DUB's!!!!!!!!!!
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rob
Dodge Dakota
8/16/2001
02:42:55
| RE: my cat rattles what the heck?
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Good luck with the dealer. Mine said as long as it passes emisions it can sound like crap and they won't fix it because it is still functional. Needless to say I go to another dealer for warranty work now. I ended up putting on a performance cat and love it.
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nbfdexp901
Gen III
8/16/2001
09:05:08
| RE: my cat rattles what the heck?
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Message:
My '98 Dak did the same exact thing, and the cat is covered by an 8 years/80,000mi FEDERAL warranty...the dealer MUST replace it. If the ceramic "blocks" the flow of the cat, you may loose power while running down the road and your truck may not go all too well. If this happens, just go hit the cat (careful....HOT!) and shake the ceramic up again.
Brad Sippel
Black '98 SLT 3.9 V6
Thunderform with 500W Legacy Amp
K&N Filtercharger, Dual Exhaust with Flo-Pro Glasspack
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Andy L
Dodge Dakota
8/16/2001
09:33:53
| RE: my cat rattles what the heck?
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Message:
My advise is to take the cat off and shake out the ceramic and reinstall for a free flowing exhaust system unless you live in Calif.
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UFO1
Dodge Dakota
8/16/2001
12:09:44
| RE: my cat rattles what the heck?
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Fúcking clifornia sucks...I want a high flow cat on mine too...sigh..
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UFO1
Dodge Dakota
8/16/2001
12:10:17
| RE: my cat rattles what the heck?
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Fúcking clifornia sucks...I want a high flow cat on mine too...sigh..
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kota on 20s
Dodge Dakota
8/16/2001
12:12:05
| RE: my cat rattles what the heck?
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Message:
thanks for all of your responces.
ROB, did the performance cat really make a big differance?
and yes unfortuantly for me i do live in CA.
Eric
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Scorkey
Dodge Dakota
JOIN HERE
1/23/2002
15:33:14
| RE: my cat rattles what the heck?
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Message:
We have a '97 Dak and our cat has been rattling for nearly two years. When we first brought it to the attention of the dealer, they said it was a loose engine manifold - so they tightened it. We we took it back later, they found the cat had separated inside the manifold and was rattlign around. But now it was past the 80,000 mile warranty (the 100,00 mile warranty does not include emission items). So we're stuck with a rattling cat. No prob they say... as long as it passes smog.
Anyone recommend a good performance cat for a '97 3.9 V6 Dakota???
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Lesley
GenIII
1/23/2002
17:01:51
| RE: my cat rattles what the heck?
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Message:
Depending on where you live, the cat should be covered under the emissions warranty, not the vehicle warranty. Here it is 100,000 kms. They should have to replace it. I am on my third with my 97 Dak.
97 3.9 CC Sport. Black. Auto 3.55
Quick D Intake, JBA Stainless headers, Autolite 3923s, stainless Borla Turbo XL, V8 R/T TB,
FMS fuel injectors
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CW
GenIII
1/23/2002
19:40:40
|  RE: my cat rattles what the heck?
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Message:
Yeah but he is at 130,000km pretty sure that is over the emissions warranty.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Working on adjustable fuel pressure with return.
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David
Dodge Dakota
JOIN HERE
7/27/2003
01:00:01
| RE: my cat rattles what the heck?
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Message:
Yeah I'm at 88K miles and so mine is out of warranty too :( I think I'll try taking it off, knocking the free stuff lose, and putting it back on. Wish me luck :)
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David
Dodge Dakota
JOIN HERE
7/27/2003
02:26:43
| RE: my cat rattles what the heck?
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so after looking at it, what is the easiest way to drop the cat to clean it out? I only see one ubolt before it, near the exhaust manifold, and not anything else until the muffler, any ideas?
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kota on 20s
GenIII
7/27/2003
03:17:08
| RE: my cat rattles what the heck?
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yeah, use a sawzall
~Eric
Single cam, non-VTEC
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Burnt Out
Dodge Dakota
JOIN HERE
7/27/2003
10:34:05
| RE: my cat rattles what the heck?
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Message:
The cat and "Y" pipe are welded together in one piece. Cut the pipe as close a possiable to the cat. There will be enough pipe left to install a new cat. I used a 2 1/2" Catco that cost 39.95 plus shipping. At the same time I replaced the muffler with a Hedman Turbo. I didn't gain any thing in the botton end, but to end is much better.
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David
Dodge Dakota
JOIN HERE
7/27/2003
11:20:25
| RE: my cat rattles what the heck?
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Message:
Where did you get that new cat from?
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Burnt Out
Dodge Dakota
JOIN HERE
7/27/2003
15:20:28
| RE: my cat rattles what the heck?
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Here is the URL
http://www.firstchoiceautoparts.com/
All I needed between the cat and muffler was a section of 2 1/2" pipe with a 1/2 offset. I kept the tailpipe in the orginal location.
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