ok so one day i tried to take the cat off , but i didnt manage to take off the 3 bolts on the back of the cat.

So i put everything back like before, guess what the car is rattling everytime i take off and at some certain rpm.

any idea what causes the rattling noise ??

thanks

 

and if i vtec it , it makes some sort of buzzing noise , really really annoying

hope it has nothing to do with my engine ...

 

check all heatshields for clearance..

did you get the springs that surrond the bolts on the cat fastened properly? sometimes backing those off a bit will help get rid of vibration.

just make sure you have no exhaust leaks afterwords.

 

probably rattling against the heat shield. Park your car and jack it up and pull on the piping back and forth and see if it rubs against anything or just remove the heat shield all together.

 

i will try to do that after work

thanks guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Day Walker &raquo;</TD></TR><TR><TD CLASS="quote">ok so one day i tried to take the cat off , but i didnt manage to take off the 3 bolts on the back of the cat.

So i put everything back like before, guess what the car is rattling everytime i take off and at some certain rpm.

any idea what causes the rattling noise ??

thanks</TD></TR></TABLE>

Those bolts are annoying, and if you managed to get them off, getting them back on is even worse...

And like they said... it's the heatshield 9 times out of 10 that rattles...

 

Another Vote for heat shields here

I've had various heat shield issues on all 3 of my Gen 3 Integra's as well as on my old CRX. Honda heat shields just love to find a way to sneak in a good buzzing rattle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">Another Vote for heat shields here

I've had various heat shield issues on all 3 of my Gen 3 Integra's as well as on my old CRX. Honda heat shields just love to find a way to sneak in a good buzzing rattle.</TD></TR></TABLE>
i agree, also check those tension springs while you're down there too

 

one more thing

i was searching for some old posts , and one of the guys said it could also be a spun rod bearing , is that true ??

what does a spun rod bearing sounds like ???
does an engine with a spun rod bearing still drives normal ???

thanks guys

 

oh by the way the car drives fine , only when at WOT it makes buzzing noise , but still pulls like usual

 

 

another heat shield vote.....that was my prob when I had the same sound

 

yup maybe its the heatshield..

 

the heat shield where are talking about here

its not the exhaust manifold heat shield , is it ??? but the heat shield on the top and bottom of the cat, right ???

thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Day Walker &raquo;</TD></TR><TR><TD CLASS="quote">the heat shield where are talking about here

its not the exhaust manifold heat shield , is it ??? but the heat shield on the top and bottom of the cat, right ???

thanks </TD></TR></TABLE>Yup the one on top of the cat. The only downside to taking it off is its a little hotter around the shiftknob and e-brake. If you can handle that, then you might as well just take it off.

 

ok i will try to do that later on if its not raining.

thanks guys

 

ok
i have took the headshields on the cat off

and its still rattling , **** its pissing me off

the sounds coming from the engine bay

 

up up

help a brother out please

im going to make a sound clip if i have time , jdm piece a ****

 

I had the heat shield problem on an old Galant I had, and I thought I was having the same problem but it turned out to be small cracks in the welds by the resonator. you might wasnt to look over all the welds in your exhaust. Good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Day Walker &raquo;</TD></TR><TR><TD CLASS="quote">what does a spun rod bearing sounds like ???
does an engine with a spun rod bearing still drives normal ???

thanks guys</TD></TR></TABLE>