I'm not sure how to explain it. But my exhaust has been making a funny grumble sometimes at low RPMs. Maybe it's a light back fire but all I have is an intake. I didn't notice it till I was driving in downtown SF, could something have come loose? It sounds like my exhaust is farting or something. Any ideas. This is a bone stock exhaust.

 

is it a rattling sound? sounds like something a cat heat shield might do, or maybe its rubbing the bumper or something?

 

to me it sounds more like an exaust gas sound not so much a rattling of objects.

 

How many miles on the car? Sounds like you may have a hole in the exhaust, do you smell exhaust fumes?

 

thas what I was thinkign that maybe I got a hole in it.. but wasn't sure how a hole would sound.. it has about 55000 on it...

 

It'd kinda sound like a low rumble/rattle, like what you described.

 

whats the best way to reproduce the sound consistantly.. I was gonan take it to acura and have a tech inspect it right quick but not sure how to consistantly reproduce the sound?

 

If there is a hole in the exhaust.....it will sound like a ricer exhaust. Loud exhaust noise and a rumbling farting sound.

If it is a vibration you feel through the cabin, an exhaust rubber hanger might be loose or ripping. Check all the rubber hangers. If it is loose it will be a consistent knocking sound at idle coming from the back.

 

it's nto consistant.. and it's not all that loud... but my exhaust will get somewhat randomly louder at low RPM.. i think it's a hole

 

whats the likelyhood of the cat crapping out or a small peice breaking off? i think theres a ratteling in the muffler not liek outside.. but inside it

 

is it a custom exhaust system? is it mandrel bent or press bent? if its a custom system thats pressed bent, its the pressed bent piping thats making that sound. i had a custom exhaust system and had it pressed bent and it made that sound. go mandrel bent or get a manufacture exhaust system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Denny &raquo;</TD></TR><TR><TD CLASS="quote">is it a custom exhaust system? is it mandrel bent or press bent? if its a custom system thats pressed bent, its the pressed bent piping thats making that sound. i had a custom exhaust system and had it pressed bent and it made that sound. go mandrel bent or get a manufacture exhaust system.</TD></TR></TABLE>

it's the stock system

 

take it to a muffler shop and have them check out the exhaust system , cause it can be something from the muffler to even the pipes ..