Random Question: How long do you guys let the car "warm up" on a cold start?
06-05-2015, 09:27 PM
#1
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2007 C280 4matic
Random Question: How long do you guys let the car "warm up" on a cold start?
I recently realized there are like 3 distinct RPM plateaus when starting my car from an overnight, cold start.
Recorded start here:
Initial start -> 0:35 = greater than 1000 RPMs, idle not dead solid, car is the "loudest" at this point
0:35 ->1:00 = idle settling in ~ 900 RPMs, startup "noises" gone
1:00+ = idle dead solid at ~750 RPMs, car is basically silent
I used to just drive straight off since I was coming from a BMW background where it was recommended to just roll out. Then I noticed the idle and would wait a little in the 45 second range. Now it seems like the car really settles in if I just wait the full minute?
How long do you guys usually wait? Or do you not wait at all?
Recorded start here:
Initial start -> 0:35 = greater than 1000 RPMs, idle not dead solid, car is the "loudest" at this point
0:35 ->1:00 = idle settling in ~ 900 RPMs, startup "noises" gone
1:00+ = idle dead solid at ~750 RPMs, car is basically silent
I used to just drive straight off since I was coming from a BMW background where it was recommended to just roll out. Then I noticed the idle and would wait a little in the 45 second range. Now it seems like the car really settles in if I just wait the full minute?
How long do you guys usually wait? Or do you not wait at all?
06-06-2015, 05:55 PM
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2017 GLC300, 2013 C250 Coupe (sold), 2008 CLK 550 Cabrio (sold), 2002 C240 Sedan (sold)
Some info here, just basic discussion. Not too in depth.
https://mbworld.org/forums/c-class-w203/572927-thoughts-about-engine-warm-up.html
https://mbworld.org/forums/c-class-w203/572927-thoughts-about-engine-warm-up.html
Last edited by Cntrypckr; 06-06-2015 at 06:35 PM.
06-06-2015, 06:24 PM
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2017 GLC300, 2013 C250 Coupe (sold), 2008 CLK 550 Cabrio (sold), 2002 C240 Sedan (sold)
I apologize, the link doesn't work. I started a similar thread back in Jan. wondering the same thing and if I remember correctly, most people said that after starting, they wait until engine rpm is below 1000 and off they go. This is the practice I have adapted in both my W203 and W204.
Also, I'll keep it below 3000rpm until its fully warmed. Idk if doing this has any benefit...I'm not very hard on cars anyways.
Also, I'll keep it below 3000rpm until its fully warmed. Idk if doing this has any benefit...I'm not very hard on cars anyways.
Last edited by Cntrypckr; 06-06-2015 at 09:19 PM.
06-08-2015, 03:57 PM
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Modern engines reach operating temp faster when the car is driven. There is no need to sit there and idle, start driving once you put your belt on, take it easy during the first couple of minutes.
06-11-2015, 03:37 AM
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2003 C230K Coupe Orion Blue
What's this "warming up the car" you speak of? :P
Seriously, I've never bothered warming up any car I've ever driven, in my entire life. And that includes when it's -35C outside (if anything, I'm idling to warm ME up inside the cabin). Just start the car and go. Warming a car is as old school as choke valves.
Seriously, I've never bothered warming up any car I've ever driven, in my entire life. And that includes when it's -35C outside (if anything, I'm idling to warm ME up inside the cabin). Just start the car and go. Warming a car is as old school as choke valves.
06-11-2015, 10:33 AM
#7
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M111 makes a hell of a racket, and the engine is sort of stifled until some valve opens or closes after about 30 seconds.
So I tend to wait for that.
Slammer, you still got your coupe?
So I tend to wait for that.
Slammer, you still got your coupe?
