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  #1 (permalink)  
Old 07 Apr 2006, 11:33 am
MG
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Default rattling from under car

for the first 5 minutes or so after I start my 98 Civic, there is a
vibrating noise coming from under the front of my car. In previous cars,
the culprit has been the head shield which I have easily removed. The
shield for this car is long gone so it can't be that. The noise seems to go
away after about 5 minutes.

Any ideas what it could be? My guess is that something with the exhaust
system is loose.

Thanks


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  #2 (permalink)  
Old 07 Apr 2006, 12:24 pm
eastwardbound2003@yahoo.com
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Default Re: rattling from under car


MG wrote:
> for the first 5 minutes or so after I start my 98 Civic, there is a
> vibrating noise coming from under the front of my car. In previous cars,
> the culprit has been the head shield which I have easily removed. The
> shield for this car is long gone so it can't be that. The noise seems to go
> away after about 5 minutes.
>
> Any ideas what it could be? My guess is that something with the exhaust
> system is loose.
>
> Thanks



Bad engine mounts, or possibly even loose A/C lines that are vibrating.

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  #3 (permalink)  
Old 07 Apr 2006, 12:57 pm
'Curly Q. Links'
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Default Re: rattling from under car

MG wrote:
>
> for the first 5 minutes or so after I start my 98 Civic, there is a
> vibrating noise coming from under the front of my car. In previous cars,
> the culprit has been the head shield which I have easily removed. The
> shield for this car is long gone so it can't be that. The noise seems to go
> away after about 5 minutes.
>
> Any ideas what it could be? My guess is that something with the exhaust
> system is loose.
>
> Thanks


---------------------------

Exhaust system 'grows' by about an inch as it gets hot. Shake it when
it's cold and see what's loose / touching what.

'Curly'
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  #4 (permalink)  
Old 07 Apr 2006, 02:41 pm
Remco
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Default Re: rattling from under car

MG wrote:
> for the first 5 minutes or so after I start my 98 Civic, there is a
> vibrating noise coming from under the front of my car. In previous cars,
> the culprit has been the head shield which I have easily removed. The
> shield for this car is long gone so it can't be that. The noise seems to go
> away after about 5 minutes.
>
> Any ideas what it could be? My guess is that something with the exhaust
> system is loose.
>
> Thanks


There's also a heat shield over the cat converter. It has a couple of
tabs that tend to rust out.
Get an automotive stethoscope (sears) and probe around. Noises can be
tricky to find as it travels.

Remco

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  #5 (permalink)  
Old 07 Apr 2006, 04:26 pm
SoCalMike
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Default Re: rattling from under car

MG wrote:
> for the first 5 minutes or so after I start my 98 Civic, there is a
> vibrating noise coming from under the front of my car. In previous cars,
> the culprit has been the head shield which I have easily removed. The
> shield for this car is long gone so it can't be that. The noise seems to go
> away after about 5 minutes.
>
> Any ideas what it could be? My guess is that something with the exhaust
> system is loose.


exhaust manifold crack?
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  #6 (permalink)  
Old 07 Apr 2006, 04:45 pm
MG
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Default Re: rattling from under car

is this something that gets replaced if I get a new exhaust system? The car
is 8 yrs old with the original system on it.


"SoCalMike" <Mikein562athotmail@hotmail.com> wrote in message
news:tbOdnb6Fm72cRKvZnZ2dnUVZ_s6dnZ2d@comcast.com. ..
> MG wrote:
>> for the first 5 minutes or so after I start my 98 Civic, there is a
>> vibrating noise coming from under the front of my car. In previous cars,
>> the culprit has been the head shield which I have easily removed. The
>> shield for this car is long gone so it can't be that. The noise seems to
>> go away after about 5 minutes.
>>
>> Any ideas what it could be? My guess is that something with the exhaust
>> system is loose.

>
> exhaust manifold crack?



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  #7 (permalink)  
Old 07 Apr 2006, 08:23 pm
TeGGeR®
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Posts: n/a
Default Re: rattling from under car

"MG" <mgazer1REMOVETHIS@yahoo.com> wrote in
news:r2BZf.3878$pZ3.540615@news20.bellglobal.com:

> is this something that gets replaced if I get a new exhaust system?
> The car is 8 yrs old with the original system on it.




You have approximately eight hundred heat-shields on your exhaust.

If you get each entire part replaced at the dealer, they will come with new
shields. Usually.

There are a number of shields that are attached to parts that are
excruciatingly expensive to replace (the cat, for instance). In those
cases, you're best to either get them torn off, or spend the $50 or so for
each shield to replace them. Sometimes a hose clamp can be tightened on to
the shields to stop them rattling.

If you get Midas or Speedy to do the work, you will get no new shields at
all, and will be back the very next spring to get more welding done. In the
end, it will cost you more than dealer replacements.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #8 (permalink)  
Old 09 Apr 2006, 02:43 pm
Jason
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Default Re: rattling from under car

Check with your Honda Dealer, there's some kind of special warranty for
exhaust manifold cracked (within those years 97-99?)





"MG" <mgazer1REMOVETHIS@yahoo.com> wrote in message
news:r2BZf.3878$pZ3.540615@news20.bellglobal.com.. .
> is this something that gets replaced if I get a new exhaust system? The
> car is 8 yrs old with the original system on it.
>
>
> "SoCalMike" <Mikein562athotmail@hotmail.com> wrote in message
> news:tbOdnb6Fm72cRKvZnZ2dnUVZ_s6dnZ2d@comcast.com. ..
>> MG wrote:
>>> for the first 5 minutes or so after I start my 98 Civic, there is a
>>> vibrating noise coming from under the front of my car. In previous
>>> cars, the culprit has been the head shield which I have easily removed.
>>> The shield for this car is long gone so it can't be that. The noise
>>> seems to go away after about 5 minutes.
>>>
>>> Any ideas what it could be? My guess is that something with the exhaust
>>> system is loose.

>>
>> exhaust manifold crack?

>
>



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