A rattling of sorts, Exhaust? - TCCoA Forums
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post #1 of 31 (permalink) Old 08-25-2009, 10:11 PM Thread Starter
 
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A rattling of sorts, Exhaust?

I'm only posting this here wondering if anyone has had this problem or knows what it is, I'm really not trying to diagnose it as I have so many other issues going on atm that I can't add another problem to my plate, and I don't think this is terribly serious.

Anyway, every morning when I leave I have to drive up a fairly steep hill.

When I start going up the hill, the car will shift, and the TC locks up at which point, around 1500rpm I hear this odd rattling noise, sounding like some metal flailing around in my exhaust or something.

It used to do this out of gear, when I would rev the engine, around the same RPM range. Now I only ever hear it when going up this hill or basically I guess when the engine is loaded down.

I suspect cats, or exhaust something or other, but I just wanted to know if anyone knows anything.... maybe something has come loose in my cats??

I'm not ready to pull my exhuast system off to go looking inside at this point, but its been going on for a while so I would like to have some idea.

there is no loss of power or any effect other than noise that I can see/feel, so i don't think it's detonation.... not to mention that it doesn't sound like detonation... it sounds really tinny.
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post #2 of 31 (permalink) Old 08-25-2009, 10:16 PM
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probably your heat shields rattling on your cats

Wrecked my 94LX looking to get another car.
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post #3 of 31 (permalink) Old 08-25-2009, 10:42 PM
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Check and make sure your 02's are tight, for some reason I had one loosen up on my car and it made a similar noise.

95 Cougar XR-7
Sold it...

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post #4 of 31 (permalink) Old 08-26-2009, 06:54 AM Thread Starter
 
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i've hit the heat shield with my hand, they are solid.

the other day i was driving up the hill, and just as I turned the corner before going up the hill, I heard this rattle, loudly, more so than normal, almost as if it had rattled and moved....then going up the hill, it didn't rattle like normal.

it hasn't stopped though, I guess it just moved out of the way that time.

only reason I suspect my cats is because I often get that rotten egg/cabbage smell, normally only when I'm hard on the throttle or moving at high speeds and jam on the gas.

sometimes just hard acceleration gives me that smell.

I'm thinking something has come loose in the cat(s) but it's been going on long enough that I would think a piece of metal in rattling around in there could have been burned up by now.
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post #5 of 31 (permalink) Old 08-26-2009, 08:47 AM
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Johnny, Your cats are plugging. Time to replace them.

The Parts Bin Special is DEAD! It is being parted out.
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post #6 of 31 (permalink) Old 08-26-2009, 10:08 AM
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<< Your cats are plugging. Time to replace them. >>

Agreed. The noise and the smell are the give-away.

Go with Magnaflow hi-flow cats #94004, and then a mid mounted dual in/dual in Magnaflow muffler #11385. The 'Bay are great sources for these.

ADDED: Check NAPA for chrome exhaust tips, you'd be surpised at the quality and price. I got the above setup on my 97 Thunderbird with 2.25 pipes and it sounds great! I think I paid like $26 for both of my chrome 2 1/8 inch diameter NAPA tips!

Click on the pics to make them larger:


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Might be a 2005-2007 Jaguar XJ-8 L in my future.

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Last edited by Gonzalo Duque; 08-26-2009 at 10:23 AM. Reason: ADDED
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post #7 of 31 (permalink) Old 08-26-2009, 12:04 PM
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This is the place and piece I used to replace all 3 cats and actually get a high flow from my headers to my single pipe.

http://www.performancepeddler.com/SC...COUGAR&sCtrl=Y

The Parts Bin Special is DEAD! It is being parted out.
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post #8 of 31 (permalink) Old 08-26-2009, 10:01 PM Thread Starter
 
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wow those tips look nice, but i gotta say, I've got so many other problems right now I can't even thinking of spending money on this right now....though that is an excellent price for the cats.

I've got to replace my RH LCA and both my wheel hubs... parts are coming but cash is tapped out.... I've also got this computer virus problem that is REALLY holding me back in a lot of ways atm.

when I do change them (maybe sept) is there anywhere I can get some cash for turning them in?? I know they use some really precious metals in there, and it can be reclaimed with the right process....someones gotta pay for that stuff somewhere, or people wouldn't be stealing them lol.
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post #9 of 31 (permalink) Old 08-27-2009, 07:58 AM
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Do you have scrap metal dealers where you live? That would be the place.

The Parts Bin Special is DEAD! It is being parted out.
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post #10 of 31 (permalink) Old 08-29-2009, 08:27 AM Thread Starter
 
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ya we do.... I wonder how much I would get for them probably not a lot.
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post #11 of 31 (permalink) Old 08-29-2009, 08:41 AM
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About a year ago, a recycling center gave me $30 each for the two primary cats.

lowered, koni sport adjustables, 4.30 tl in aluminum housing, mark 8 trans, j-mod, 93 mark viii ds, antenna hole=gone, kooks headers 1.75" primaries, 2.5" catless duals, midmount magnaflow, 96-97 sport wheels with 255/50/16 sumitomo HTR Zs, optima in the trunk, new motor...94 mark 6/6/08
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post #12 of 31 (permalink) Old 08-29-2009, 03:11 PM
 
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I have the same problem. Thank you search button! I guess I'll replace them as soon as I can..
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post #13 of 31 (permalink) Old 08-29-2009, 07:28 PM Thread Starter
 
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ganzalo I take it, its you selling those?? or no??
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post #14 of 31 (permalink) Old 08-31-2009, 08:25 AM
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Hi BigJohnny, no sir, I'm not selling exhaust systems or components, just passing along my solution when I had the same problem. It made a big difference for me so I figured I can't be the only one with the bad cats.

If you mean the hoodliners, yes, I do make and sell those, you can see all the pics and info in the blogspot link in my signature.

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1997 Thunderbird Limited Edition 4.6L V8 - gone.
Might be a 2005-2007 Jaguar XJ-8 L in my future.

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http://www.hoodliners.net - My hoodliners I make!
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post #15 of 31 (permalink) Old 08-31-2009, 07:18 PM Thread Starter
 
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I didn't care who was selling them, just wanted to make sure if I was buying them they are coming from a reliable source. I don't want to order magnaflows and get mangaflows instead you know what I mean ....


also, what hoodliners?
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post #16 of 31 (permalink) Old 09-01-2009, 08:44 AM
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Gotcha, I got my Magnaflow muffler and high-flow cats from eBay and it was a great price and from a reputable seller - always check the feedback.

I make hoodliners from aircraft firewall material and all the info is in the link showing in my signature: http://hoodliners.blogspot.com

Gonzalo Duque "Gonzo"
1997 Lincoln Mark VIII LSC 4.6L Cobra V8
1997 Thunderbird Limited Edition 4.6L V8 - gone.
Might be a 2005-2007 Jaguar XJ-8 L in my future.

[email protected]
Westland, Michigan - but I'm from central New Jersey!
http://www.hoodliners.net - My hoodliners I make!
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post #17 of 31 (permalink) Old 09-01-2009, 10:51 AM
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Hey Gonzo I will be contacting you as soon as my car is painted to inquire about a hoodliner. Do you offer anything for a cowl hood?

95 Cougar XR-7
Sold it...

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Sold it...
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post #18 of 31 (permalink) Old 09-01-2009, 11:10 AM
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Hi Mike! I sure can, since you have a cowl hood it would be a section of liner in the width x height dimensions for the area that you'd like to cover. I'm in Westland and fairly close to you. I can do the install as well!

Gonzalo Duque "Gonzo"
1997 Lincoln Mark VIII LSC 4.6L Cobra V8
1997 Thunderbird Limited Edition 4.6L V8 - gone.
Might be a 2005-2007 Jaguar XJ-8 L in my future.

[email protected]
Westland, Michigan - but I'm from central New Jersey!
http://www.hoodliners.net - My hoodliners I make!
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post #19 of 31 (permalink) Old 09-01-2009, 12:14 PM
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PM Sent!

edit- Actually in regards to the PM that I sent you, I may be able to set something up with you sooner than expected. I.E., before it goes in for paint.

Thanks,
Mike

P.S- Sorry for the hijack!

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Last edited by MikeyB; 09-01-2009 at 12:23 PM.
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post #20 of 31 (permalink) Old 09-01-2009, 10:01 PM Thread Starter
 
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damn I'd like to have one of those liners, what do you charge for one of them?
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post #21 of 31 (permalink) Old 09-02-2009, 08:23 AM
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$85 for the liner, $15 for the decal, $13 Priority Mail shipping in the USA, $23 to Canada.

Please look at my blog page, all the info is there, more pics, and the reason why the hood must come off for the install.

Sorry to hijack your thread! Please let us know what you end up doing with your exhaust and if your solution works - if it takes the rattling away.

Gonzalo Duque "Gonzo"
1997 Lincoln Mark VIII LSC 4.6L Cobra V8
1997 Thunderbird Limited Edition 4.6L V8 - gone.
Might be a 2005-2007 Jaguar XJ-8 L in my future.

[email protected]
Westland, Michigan - but I'm from central New Jersey!
http://www.hoodliners.net - My hoodliners I make!
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post #22 of 31 (permalink) Old 09-03-2009, 07:07 AM Thread Starter
 
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you basically hijacked the thread at my request I really like those hoodliners and thats a decent price, even when you take conversion to CAD into account.

as for my exhaust, it might have to wait a little longer, like say maybe oct. before I can replace my cats and stuff, this computer problem I'm having will cost me a little bit to fix up and get back to normal, and knowing that I'm getting laid off at the end of year means I gotta start getting some money saved or something, try and get my CC paid up.

gonna be tough for a while, but I'm going to go back to school or take some kind of course so I can get certified and actually do something significant with my life. the gov't has a couple programs that they fund for people to enhance their skills i they've been laid off.

I'm thinking I might go for my DZ+heavy equipment license covering 7 machines.
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post #23 of 31 (permalink) Old 09-13-2009, 07:41 AM Thread Starter
 
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I was going up my usual hill lastnight, and while cruising along steadily the RPM would go up, then just as it would reach the point where the rattling starts it would drop RPMs, by about 500, then they would start going up again and repeat this process over and over until I got to the top of the hill and actually started accelerating/driving.
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post #24 of 31 (permalink) Old 09-13-2009, 12:53 PM
 
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Try letting completely off the Accel, and let it down-shift. Then apply accel again and let me know.
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post #25 of 31 (permalink) Old 09-13-2009, 07:59 PM Thread Starter
 
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I dont know what you mean.... if i let off the accel, it doesn't do it. I was just pointing out that at a steady rpm, it would drop, and then go up and drop etc etc.....it would drop rpm when the noise started, when rpm dropped noise stopped.

I'm going to replace my cats but won't be able to until nov.
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post #26 of 31 (permalink) Old 09-22-2009, 12:13 PM
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also check you're resonator, i know right now i have very similar rattling from my exhaust and its coming from inside my resonator

-Sean

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post #27 of 31 (permalink) Old 09-22-2009, 12:46 PM
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I actully just started getting a rattling sound from my exhaust. It definitely sounds like the drivers side cat or the resonator, I didnt investigate too far into it. I only hear it when engaging reverse and if I am at low rpms slow crusing it pops up every now and again.

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post #28 of 31 (permalink) Old 09-25-2009, 07:05 AM Thread Starter
 
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these cars don't have resonators.... or at least the 96 doesn't..... 3 cats and 2 mufflers.

I seen a diagram previously, the resonator was a long tube in place of the 3rd cat.

anyway, I'm gonna look at replacing my cats first pay next month. cost of the cats, 4 O2 sensors, shipping and conversion to Canadian dollars is gonna run me about $300

I'm gonna also need a Y pipe cause I want to drop my 3rd cat.
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post #29 of 31 (permalink) Old 09-25-2009, 08:29 AM
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Johnny,

I've had 2 local shops and 2 local Ford Stealerships call the thing immediately after the 3rd cat a resonator, and ask me why it is missing.

I got a Cherry Bomb knock off of a Flowmaster design for a muffler. Sounds good and no fiberglass to burn out and change the tone. (Cherry Bomb and Flowmaster are part of the same corporation now.)

There are no smog Nazis in Iowa for now, but with the Obama nanny state, never know when there will be Federal inspections, that is if Obama lets us keep our private cars.

The Parts Bin Special is DEAD! It is being parted out.
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post #30 of 31 (permalink) Old 09-25-2009, 07:44 PM Thread Starter
 
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I don't have a thing after the 3rd cat, never have, so that's all I really have to go on, that and the image I seen, but it wasn't for 96 model year cars, it was earlier.

I don't think the 96's came with resonators.......but I could be wrong.
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