Rennteam 2.0 - EN - Forum - Rattle at cold start - Page1

Apr 15, 2006 2:46:34 AM

csmiller: Newbie; Loc: Saratoga, CA; Posts: 25, Gallery; Registered on: Feb 24, 2005

Rattle at cold start

After 8k miles I am still trilled with my 997s (non PSE), but the 5 second rattle in the exhaust at cold start up is an embarrassment. The mechanic at the dealer says it is normal and nothing is being harmed... just my pride. Has anyone found a way to prevent this "normal" start up rattle?

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Apr 15, 2006 2:56:26 AM

Vincenzina: Pilot; Loc: Dubai UAE; Posts: 395, Gallery; Registered on: Oct 12, 2005; Reply to: csmiller

Re: Rattle at cold start

I wanted to know whats up with that too..The dealer said the first minute, it's normal for the throttle to keep adjusting itself..cant stop it.
Sounds like a beetle for a minute, in the morning, that doesnt want to get out of bed...

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Apr 15, 2006 3:06:12 AM

Coochas: Co-Pilot; Loc: Boston, MA, USA; Posts: 221, Gallery; Registered on: Mar 19, 2006; Reply to: Vincenzina

Re: Rattle at cold start

This is definitely a normal sound for a 997. I asked my dealer and have read other threads on this (I think on Rennlist).
I have to admit, I do NOT like the cold start engine sounds - almost sounds like it's knocking for the first 10-20 secs. My wife has even commented on it!

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Apr 15, 2006 4:08:13 AM

John H: Rennteam VIP; Loc: Cheshire, UK , United Kingdom; Posts: 7685, Gallery; Registered on: Oct 20, 2005; Reply to: Coochas

Re: Rattle at cold start

I was also concerned when I first heard the start-up rattle.
My dealer told me that it was normal and caused by a pump which activates to speed-up the heating process of the cats.

Maybe BS but so many of us have it I guess it must be normal.

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Apr 15, 2006 5:07:56 AM

Deven: Junior; Loc: Scottsdale, Arizona; Posts: 78, Gallery; Registered on: Jul 26, 2005; Reply to: John H

Re: Rattle at cold start

Good to hear that I am not the only one with morning rattles.

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Apr 15, 2006 8:34:46 AM

intouch1: Rennteam Master; Loc: Red Sea , Egypt; Posts: 5754, Gallery; Registered on: May 22, 2004; Reply to: Deven

Re: Rattle at cold start

strange, i have not noticed any rattles on mine. will listen more closely when i go to start it within the next hour....

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Apr 15, 2006 8:48:06 AM

SoCal Alan: Rennteam VIP; Loc: Orange County , United States; Posts: 7268, Gallery; Registered on: Mar 6, 2004; Reply to: intouch1

Re: Rattle at cold start

Quote:
intouch1 said:
strange, i have not noticed any rattles on mine. will listen more closely when i go to start it within the next hour....

If you have PSE with the "always on" mod, you will not hear it as clearly, but it is still there.

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Apr 15, 2006 8:53:06 AM

Pink Panther: Pilot; Loc: UK , United Kingdom; Posts: 363, Gallery; Registered on: Mar 4, 2005; Reply to: SoCal Alan

Re: Rattle at cold start

Funny, I actually like it. This was also an issue on M3's so I am wondering if it is related to quad exhausts ? Any C2 owners have this problem/feature?

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Apr 15, 2006 10:31:40 AM

Anthony4579: Newbie; Loc: USA; Posts: 2, Gallery; Registered on: Aug 14, 2005; Reply to: Pink Panther

Re: Rattle at cold start

I just had my car in for the tip repair and had them check the rattle as well (if only I had seen this post before it would have saved me a little worrying). They told me when the car was ready that they checked other cars and that they all do it. Seems as if high performance sports cars have little excentricities. I had both an E36 and E46 M3 and they both had little oddities about them, in the end I think it adds to the character of the car if it is not a real problem.

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Apr 15, 2006 12:50:01 PM

jcs: Pilot; Loc: nj; Posts: 308, Gallery; Registered on: Mar 3, 2006; Reply to: Anthony4579

Re: Rattle at cold start

Mine also had a rattle when I started the engine for the first time when I picked it up at the dealer .
It sounded as though something was loose on the exhaust system .
It's normal and you have to get used to it.

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Apr 15, 2006 2:21:26 PM

MMD: Rennteam VIP; Loc: usa; Posts: 9652, Gallery; Registered on: Dec 16, 2004; Reply to: jcs

This should help everybody feel better

All the reviewers said our cars sound like a bucket of bolts at warm up. So don't worry about it when cold. There's a heck of alot going on in the engine (any engine) and Porsche didn't design them to sound good at idle.

When they get warmer they sound better but still our engines are not known for purring like kittens at idle.

I'm just going on what I read in mags and heard on net.

I hope y'all feel a bit better.

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Apr 15, 2006 2:55:13 PM

Vincenzina: Pilot; Loc: Dubai UAE; Posts: 395, Gallery; Registered on: Oct 12, 2005; Reply to: MMD

Re: This should help everybody feel better

Quote:
MMD said:
All the reviewers said our cars sound like a bucket of bolts at warm up. So don't worry about it when cold.

Love that review, (Bucket of Bolts at warm up) when the car costs oh about 100k..plus.

Sleepy beetle, but rocks at shall we say that 'redline' area

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Apr 15, 2006 4:07:45 PM

intouch1: Rennteam Master; Loc: Red Sea , Egypt; Posts: 5754, Gallery; Registered on: May 22, 2004; Reply to: Vincenzina

Re: This should help everybody feel better

flat 6 at redline is the best sound of all.

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Apr 15, 2006 6:07:35 PM

SimpleSkin: Co-Pilot; Loc: Ashburn VA, USA , United States; Posts: 213, Gallery; Registered on: Dec 1, 2005; Reply to: Pink Panther

Re: Rattle at cold start

Quote:
Pink Panther said:
Funny, I actually like it. This was also an issue on M3's so I am wondering if it is related to quad exhausts ? Any C2 owners have this problem/feature?

I agree with you. I love the sound. Almost wish it always sounded like that at idle. To me it sounds nasty! And I mean nasty in a good way

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Apr 15, 2006 6:16:55 PM

intouch1: Rennteam Master; Loc: Red Sea , Egypt; Posts: 5754, Gallery; Registered on: May 22, 2004; Reply to: SimpleSkin

Re: Rattle at cold start

the carrera s has no quad exhaust. it has twin pipes with quad outlets.

many criticized that feature and said its ricer car inspired.

it should have had two big outlets instead.

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Apr 16, 2006 12:34:52 AM

MMD: Rennteam VIP; Loc: usa; Posts: 9652, Gallery; Registered on: Dec 16, 2004; Reply to: intouch1

Re: Rattle at cold start

Quote:
intouch1 said:
the carrera s has no quad exhaust. it has twin pipes with quad outlets.

many criticized that feature and said its ricer car inspired.

it should have had two big outlets instead.

The fakes bother me on my S. I could kick myself for not ordering PSE; at least the quads would be "functional."

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Apr 16, 2006 12:51:31 AM

John H: Rennteam VIP; Loc: Cheshire, UK , United Kingdom; Posts: 7685, Gallery; Registered on: Oct 20, 2005; Reply to: MMD

Re: Rattle at cold start

Quote:
MMD said:
Quote:
intouch1 said:
the carrera s has no quad exhaust. it has twin pipes with quad outlets.

many criticized that feature and said its ricer car inspired.

it should have had two big outlets instead.

The fakes bother me on my S. I could kick myself for not ordering PSE; at least the quads would be "functional."

So get PSE retro-fitted (if it ever comes off back-order!)

Does a car with PSE rattle as much as one without?

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Apr 16, 2006 2:07:05 AM

SoCal Alan: Rennteam VIP; Loc: Orange County , United States; Posts: 7268, Gallery; Registered on: Mar 6, 2004; Reply to: John H

Re: Rattle at cold start

Quote:
John H said:
Quote:
MMD said:
Quote:
intouch1 said:
the carrera s has no quad exhaust. it has twin pipes with quad outlets.

many criticized that feature and said its ricer car inspired.

it should have had two big outlets instead.

The fakes bother me on my S. I could kick myself for not ordering PSE; at least the quads would be "functional."

So get PSE retro-fitted (if it ever comes off back-order!)

Does a car with PSE rattle as much as one without?

If you have PSE with the "always on" mod, you have to listen closely, but you can still hear it a little.

If you have PSE without the "always on" mod, you will hear it loud and clear because at startup, the exhaust sounds the same with and without PSE. Unless you are fast enough to press the "sport" button after start-up. At which point, I'm not sure. I'll have to undo the mod to really find out.

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Apr 16, 2006 2:37:14 AM

devo: Veteran; Loc: NY , United States; Posts: 1107, Gallery; Registered on: Jan 31, 2006; Reply to: Pink Panther

Re: Rattle at cold start

Quote:
Pink Panther said: This was also an issue on M3's so I am wondering if it is related to quad exhausts ?

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Apr 16, 2006 3:27:58 AM

Kevin034: Pilot; Loc: WA; Posts: 393, Gallery; Registered on: Oct 7, 2005; Reply to: devo

Re: Rattle at cold start

if i wanted a car that's quiet and smooth, i would've gotten a lexus.

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