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Thread: exhaust rattle

  1. #1
    Join Date
    Jan 2009
    Location
    San Francisco
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    44
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    623

    exhaust rattle

    i get a very annoying rattle in my exhaust when i get on the gas pedal. i cant seem to pinpoint where the noise is coming from. when i slowly accelerate its not very noticeable, only when i really get on the throttle. took it to my muffler guy and all pipes are tight and seems to have no leaks. any ideas are appreciated.
    2003 Mercury Marauder 300A
    #5597 of 7839 in 2003
    Eibach front lowered springs
    aero turbine 2525 mufflers
    2.5" classglass hood
    badgeless grill
    JLT CAI
    SCT X3 w/ Marty O tune

  2. #2
    Join Date
    Feb 2004
    Location
    St Clair Shores, Michigan
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    58
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    1,101
    How many miles on it? Could be one of the catalyst converters.
    2012 Jeep Grand Cherokee Laredo-White
    2012 Jeep Grand Cherokee Laredo-Silver
    2011 Ford Fusion SE

    Retired 2003 Mercury Marauder/Trilogy 054
    Retired 2004. 13.00 on Nitrous safely tuned by Alt Auto.

  3. #3
    Join Date
    Jan 2009
    Location
    San Francisco
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    Posts
    623
    its got 76,xxx miles on it. typically how long do they last? i dont really drive hard, usually pretty easy on the throttle til provoked.
    2003 Mercury Marauder 300A
    #5597 of 7839 in 2003
    Eibach front lowered springs
    aero turbine 2525 mufflers
    2.5" classglass hood
    badgeless grill
    JLT CAI
    SCT X3 w/ Marty O tune

  4. #4
    Can't really say how long they last, they should be good for the life of the car but there are lots of different factors that can break them down prematurely. I had my front set for about 145-147K miles are they worked just fine. Tossed them when I re-did my whole exhaust system several months ago.

    Does it do it only when in Drive (in motion with engine under load) or can you sit in Neutral and raise the rpms and hear it?

    2004 Silver Birch
    300B
    Build date:9/29/2003, Adopted on 12/02/05
    Exhaust by Greg
    13.630 @ 100.49 mph (11/21/10)

    2015 Ford Focus SE Sport FWD
    2013 Lincoln MKS EcoBoost AWD (377whp/423tq).
    2010 Ford Fusion Sport FWD
    1989.5 Ford Mustang 5.0 LXsport

  5. #5
    Join Date
    Oct 2003
    Location
    Beaufort, SC
    Posts
    7,719
    If they are OEM's they should be warranted for 100K miles......I think??
    No Marauder

  6. #6
    I think emissions warranty is 80k miles.

    2004 Silver Birch
    300B
    Build date:9/29/2003, Adopted on 12/02/05
    Exhaust by Greg
    13.630 @ 100.49 mph (11/21/10)

    2015 Ford Focus SE Sport FWD
    2013 Lincoln MKS EcoBoost AWD (377whp/423tq).
    2010 Ford Fusion Sport FWD
    1989.5 Ford Mustang 5.0 LXsport

  7. #7
    Join Date
    Oct 2003
    Location
    Beaufort, SC
    Posts
    7,719
    Still worth checking since he's at 76K.....right??
    No Marauder

  8. #8
    Join Date
    Dec 2010
    Location
    In between the where and at
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    51
    Posts
    1,275
    Hey there! I own a 2005 crown vic that has a catalytic convertor rattle and I only have 33000 miles on the car. I was considering just punching them out... old school cheap 5.0 mustang style. At least that's what I did. Does anyone know of the possibility of setting a code by doing this? I would love to buy an exhaust system from reinhart, but alas! Can't afford that right now. I will look into the convertors being warranted too.

  9. #9
    Join Date
    Oct 2009
    Location
    Belle River, ON
    Age
    53
    Posts
    97
    I just had my cats replaced under warranty a few months ago. They were covered up to 130,000km (80k miles). I took the car in just in time, with 126,000km on it.
    They were really rattling, and the car stunk.
    The worst part is that I think some pieces blew into one of my mufflers, so now they need to be redone, as they're rattling and vibrating.
    Belle River, Ontario, Canada
    2003 Marauder - Black
    Car #5636 of 7839
    Lidio Tune, K&N CAI

  10. #10
    Join Date
    Jan 2004
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    Somewhere in the N.C. Triangle
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    Posts
    26,250
    Get under the car and tap or bang on the cats. If the material is loose inside you should be able to hear it rattling around.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  11. #11
    Join Date
    Dec 2010
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    In between the where and at
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    1,275
    Yes indeed the warranty is 8 years or 80000 miles. I just confirmed it at local ford dealer. Asf long as the rattle is internal and not just a heat sheild.

  12. #12
    Join Date
    May 2006
    Location
    Seattle, WA
    Posts
    5,683
    Quote Originally Posted by jus4kix03MM View Post
    i get a very annoying rattle in my exhaust when i get on the gas pedal. i cant seem to pinpoint where the noise is coming from. when i slowly accelerate its not very noticeable, only when i really get on the throttle. took it to my muffler guy and all pipes are tight and seems to have no leaks. any ideas are appreciated.
    Hate to be the bumper of old threads, but did you ever figure out what you trouble was? I have been having the same exact issue you described and you seem to have the same muffler setup as me (Aero turbine 2525). Not sure if it's something to do with that or what....

    I won't get the rattle at low speed but when I really get on it. Sometime when I stop at a light I can still hear the rattle.
    2003 Trilogy Supercharged Marauder

  13. #13
    Join Date
    Jul 2013
    Location
    London
    Age
    41
    Posts
    3
    I had the same problem. Auto repair shop said it was my cat, need to get it sorted

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