Cold start
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 26
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2010 C63
Cold start
Hi guys, quick question.
Lately I have noticed that the classic cold start rumble is gone. Car used to have such wonderful growl at start accompanied by rpm around 1500. This lasted for a few seconds and the rpm returned to normal. Lately I have noticed that it is gone. Today I started the car after a week of non driving. Immediately settled to a little over 500 rpm and that famous cold start sound just not there. Any suggestions as to what is going on? I like to have it back.
Thanks
Lately I have noticed that the classic cold start rumble is gone. Car used to have such wonderful growl at start accompanied by rpm around 1500. This lasted for a few seconds and the rpm returned to normal. Lately I have noticed that it is gone. Today I started the car after a week of non driving. Immediately settled to a little over 500 rpm and that famous cold start sound just not there. Any suggestions as to what is going on? I like to have it back.
Thanks
MBWorld Fanatic!
Joined: Nov 2014
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From: Olathe, KS
'13 C63 AMG P31
Has the temperature changed any since when you first started to notice, (winter to summer)? Starting it in colder weather could lead to a deeper growl than starting it in slightly warmer conditions.
MBWorld Fanatic!
Joined: Nov 2012
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'10 C63
Start the car with the oil temp displayed. If it's over 90F, cold start won't be there. For example if you drove late the night before and started it early rhe next morning, the oil might not have cooled enough to invoke cold start logic.
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 26
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2010 C63
Have not started the car for several days, so it was cold...very cold. It sits in an unheated garage and the temperature this morning here in Charlotte NC was way below 32. It behaves as if it was a warm engine start. It has been doing this for a month or so but really thought it was ll in my head. This morning really settled it that it is not.
Member
Joined: Oct 2010
Posts: 85
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From: Calgary, AB
C63 AMG 507 Sedan
One day I started my car in around -20C. The car was sitting outside for 3 days of non driving. The engine was shaking and even I could feel the car was shaken (not slightly as normally I can feel) too.
Is this normal? It never happens again since then.
Is this normal? It never happens again since then.
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MBWorld Fanatic!
Joined: Nov 2014
Posts: 2,575
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From: Olathe, KS
'13 C63 AMG P31
That's just the car wagging it's tail in eagerness for the journey ahead! Completely normal though, the windchill here yesterday was -25F (-32C) and the car was started for the first time this week....the noise that came out sounded like a jet engine from hell.
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Junior Member
Joined: Dec 2010
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W202 (1999 C240) and W204 (2008 C63)
Rumble on cold start is unpredictable in my opinion, mine lives in a unheated garage, and sometimes if growls after driving the previous day or not. Cold start after 3 weeks of non-driving the car was not happy - they don't like to be standing, but settle down, just let them sit and run for a bit IMHO.
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From: Chicago, IL
2018 AMG E63s
