is rattly engine sound and 1st gear "stuck" on cold start normal on 2.3L engine?
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Joined: Sep 2002
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From: Houston, TX
2002 C230 Coupe Black/Charcoal C5 C7 Auto
is rattly engine sound and 1st gear "stuck" on cold start normal on 2.3L engine?
I've just been noticing it but wasnt sure if it is normal or not. When i start a cold engine in the morning (garaged or not) and outside temp is say anywhere from 50F to about 70F the car make all sorts of rattly buzzy noises for about a minute (or to be exact i look at the coolant temp gauge and when it hit its first increase) the noise go away and becomes normal. Again this only happen at startup (or leave car for about 7/8 hours). Should I be concern or is it normal on the 2002 C230k coupe? Thanks for any input 
*Also when the temp is REALLY cold (about 30F to 40F) and if i leave it for about 7/8 hours outside right after initial start and drive immediately the car stay stuck in first "gear" and cant really get out of it until the temp increase a bit.
*Also when the temp is REALLY cold (about 30F to 40F) and if i leave it for about 7/8 hours outside right after initial start and drive immediately the car stay stuck in first "gear" and cant really get out of it until the temp increase a bit.
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Joined: Jul 2002
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From: Vancouver WA
'14 GLK250 Diesel
Both of the things you describe...
...are characteristics of this model. The new 1.8 engine is noticeably smoother and quieter - cold start noise is endemic with the SC 2.3.
And yes, the transmission will hold first longer when it is cold - this is to get the catalytic converter warmed up faster so emissions are lower.
Nothing to be alarmed about in either case...
And yes, the transmission will hold first longer when it is cold - this is to get the catalytic converter warmed up faster so emissions are lower.
Nothing to be alarmed about in either case...
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From: Toronto, Canada
2019 C300 Wagon; '75 Triumph TR6; previous: 2004 C230 6spd sold after 17 years of driving
On cold days my 1-2 shift seems to crunch/clash
