Roaring noise

2003 BUICK RENDEZVOUS
60,000 MILES • 6 CYL • AWD • AUTOMATIC
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LARSONBOB
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sounds like a loud muffler had exchaust system looked at every thing ok, It is comming from the rear around where the muffler is. It does it under a load, like going up hill. it sounds just like a loud muffler. only under a load. when I start off from a stop sign,under a load,It is very load need ear plugs.
Apr 22, 2011 at 8:19 PM
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FIXITMR
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was this problem sudden or slowly noticeable over time?
Apr 22, 2011 at 8:46 PM
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LARSONBOB
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Slowly noticeable over a 6 month pereid got louder & louder.
Apr 23, 2011 at 12:05 PM
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FIXITMR
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it almost sounds like exhaust is opening gap when under load. the engine causes a pull on system when you put it in gear and go. have you tried holding brake and giving some gas to see if it does it then?
Apr 24, 2011 at 7:23 AM
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LARSONBOB
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I held the brake and gave it some gas and yes it made that noise. could it something inside the muffler? when the car is running in park and you rev it up it is not load but when you let off of it sounds like a little rumble or soft pops .
Apr 24, 2011 at 4:01 PM
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FIXITMR
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something rotted out in muffler allowing noise strate through instead of the twists and silencers. certainly seems like a possibility in this case.
Apr 25, 2011 at 1:21 AM
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LARSONBOB
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Thank you for your time and answers.
Apr 25, 2011 at 12:35 PM