Mysterious rattle noise tried everything
08-25-2018
#1
Registered!!
Thread Starter
Join Date: Aug 2018
Age: 26
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 
Mysterious rattle noise tried everything
Hey so i got a 2002 honda civic si ( ex in america i assume ) getting a weird metal on metal rattle sound extremely loud and embarrassing lol sounds like its coming from the headers really hard to tell though mostly happens on deceleration
things ive tried :
replaced donut gasket ( previous one looked toast )
replaced spring bolt kit ( really sounds like this is the issue)
added washers to springs on bolt kit to try and tighten the spring up a bit incase that was the issue 1 to 4 washers didnt help seems maybe to have quieted down though.. suspecting the spring isnt strong enough on the kit i bought maybe might try a dealership
removed all heat shields
car has been on 3 5 hour plus trips in the past month it really seems to do it during inclines on hills and around 2500 to 3500 rpms, does not do it on highways as far as i have noticed does it in all gears and neutral have a hard time replicating the noise when trying to show it to people seems as if when parked its hard to make it do it and seems to slightly do it if you pull the throttle body and rev to 3500 then let go, completely stumped been at this preiodicaly looking at it for weeks i really have no other idea
also no it isnt the cat or o2 sensors o2 sensors are tight and its running a test pipe
all ive found on google so far is possibly the fuel grade but i doubt that.
no mods done to it bone stock beyond cat delete
things ive tried :
replaced donut gasket ( previous one looked toast )
replaced spring bolt kit ( really sounds like this is the issue)
added washers to springs on bolt kit to try and tighten the spring up a bit incase that was the issue 1 to 4 washers didnt help seems maybe to have quieted down though.. suspecting the spring isnt strong enough on the kit i bought maybe might try a dealership
removed all heat shields
car has been on 3 5 hour plus trips in the past month it really seems to do it during inclines on hills and around 2500 to 3500 rpms, does not do it on highways as far as i have noticed does it in all gears and neutral have a hard time replicating the noise when trying to show it to people seems as if when parked its hard to make it do it and seems to slightly do it if you pull the throttle body and rev to 3500 then let go, completely stumped been at this preiodicaly looking at it for weeks i really have no other idea
also no it isnt the cat or o2 sensors o2 sensors are tight and its running a test pipe
all ive found on google so far is possibly the fuel grade but i doubt that.
no mods done to it bone stock beyond cat delete
08-25-2018
#3
Registered!!
Re: Mysterious rattle noise tried everything
Metal on metal sound very nondescript , does it sound more like a buzz, a ping, or like a sledgehammer hitting railroad tracks...
08-25-2018
#4
Registered!!
Thread Starter
Join Date: Aug 2018
Age: 26
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: Mysterious rattle noise tried everything
74252-S5A-000
08-25-2018
#6
If you think a good mechanic is expensive, try hiring a bad one
Re: Mysterious rattle noise tried everything
We still cant hear anything (HINT)
08-25-2018
#7
Registered!!
Thread Starter
Join Date: Aug 2018
Age: 26
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: Mysterious rattle noise tried everything
PROBLEM SOLVED!!!
boredom got the best of me so i took the whole exhaust off the car from the manifold, looks like its doublle walled or something because it cracked on the inside of the exhaust right where it bolts to the manifold i took my o2 sensor out and stuck my welder down the down pipe and welded the crack up and put her back up and its gone so if anybody has a buzz up front on a 01 to 05 ex or si coupe that is your issue friends
boredom got the best of me so i took the whole exhaust off the car from the manifold, looks like its doublle walled or something because it cracked on the inside of the exhaust right where it bolts to the manifold i took my o2 sensor out and stuck my welder down the down pipe and welded the crack up and put her back up and its gone so if anybody has a buzz up front on a 01 to 05 ex or si coupe that is your issue friends
08-25-2018
#8
If you think a good mechanic is expensive, try hiring a bad one
Re: Mysterious rattle noise tried everything
Still no video so we all can hear it?
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
mscott827
Mechanical Problems/Vehicle Issues and Fix-it Forum
3
03-17-2013 03:33 PM
avious
Mechanical Problems/Vehicle Issues and Fix-it Forum
3
12-02-2011 06:28 AM
Maple50175
Mechanical Problems/Vehicle Issues and Fix-it Forum
3
07-19-2007 03:51 PM
hypnotic7thgen
Mechanical Problems/Vehicle Issues and Fix-it Forum
4
03-14-2003 08:12 PM
