I have checked the website and found a few threads with similar problems but they don't appear to have been solved. I have a 2002 Cicic LX with about 120k miles. The following problem has been occuring for a while and I can't take it much longer.


After the car warms up (it won't do it cold), there is an annoying buzz/rattle that occurs right around 2500 rpm'swhile increasing the rpm's or while decreasing. I have taken off the rusted out cat. converter shield. I have listened for the noise while under the car and it sounds like it is from the exhaust pipe right where it changes from verticle to horizontal after the cat. converter. IfI put a bar between the engine and body and put a slight pressure it the noise goes away.

Any thought?

 

My volkswagen does the same thing... lol.. I think it's from the exhaust system too. It's just weird that it makes it only at a certain RPM...

 

mine makes that same noise after i installed my headers i cant figure out if its a crapy muffler or a lead in the gasket like you where talking about and mine starts at 3000rpm and then levels out to normal muffler noise

 

We just fixed this on my daughter's 2000 Civic. My brother took off he connection in front of the resonator and found a pipe inside the exhaust pipe. We drilled a hole through the outside pipe and through the inside pipe and installed a stainless screw....noise gone!! Then reasembled the exhaust.

 

yeah mine does the same, 97, but um yeah its just a ressonance frequency for the motor and exhaust... i use it as a shift noise

 

Deano34,

I saw a similar post that described a fix like yours, but it was on a different model honda. I wasn't sure if the civics had the pipe with in a pipe system. The outside diameter seemed awfully small to have another one inside it. I think I will give it a try.

Thank you.

 

probably just a random heat shield. Pull them all off and the sound will go away