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04 exped,muffler?

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Old Aug 6, 2005 | 08:29 PM
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04 exped,muffler?

hi all, we have an o4 5.4 expedition, it has been to the dealer 3 times for exaust noise, it sounds like a bafflel in the muffler has come loose , only at times. my last visit, i started and turned off the engine 3 times in a row, with service person hearing the pop-pop noise, i thought, finally some one from ford heard it. left it, sorry no luck. well i took it back last week, been at the dealer for a week, no call, no luck i guess. anyone else have this type of noise. thansk louie
 
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Old Aug 7, 2005 | 01:04 AM
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i had the same noise on my 03 and each time they thought i was joking the third time they just order me a new system from the cat back. the part was over 540.00 on the invoice.
 
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Old Aug 7, 2005 | 04:37 AM
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Yeah...my 03 would make a sound like a coffee can popping back into shape.

It went away when I installed a FM70.
 
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Old Aug 7, 2005 | 10:19 AM
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monsta nailed it . thats the sound i just couldn't describe it.
 
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Old Aug 7, 2005 | 11:34 AM
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how did you get them to change it, did they hear the noise, or ? call in a specialist?i have 2 ford dealers near (lincoln,ford) both have heard the noise, but say once i leave the exped. they raise and cannot duplicate.
 
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Old Aug 7, 2005 | 03:32 PM
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if they heard it then they should just replace the muffler assembly.
 
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Old Aug 7, 2005 | 06:58 PM
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I never heard any poping noise the brief time that my 03 Expy had it's OEM muffler.I removed the factory muffler and replaced it with a 70 series flowmaster soon after I got the Expy..
 
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