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  #1  
Old 12-29-2008, 07:48 PM
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My 2005 C230 is runing too cold...Why?

Hello fellow MB owners,

I need a little help...I have a 2005 C230 and have lately noticed that the car takes 15-20 minutes to get up to temperature, where previously, it took just a few minutes. my gas mileage has also suffered.

I purchased a new thermostat but haven't installed it yet. I was hoping to get some advice from the forum prior to doing so.

Any assistance is appreciated!

Thanks!

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  #2  
Old 12-29-2008, 08:00 PM
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Location: Seattle
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My advice is install the thermostat!
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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  #3  
Old 12-30-2008, 12:41 AM
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www.stonebrew.com
 
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i had similar issue, eventually set a code , dont recal which one, but get yourself some mb coolant or try to save what you have if it is the blue stuff, mb says the blue is good for 15 years or 100k miles,was a leaking thermostat, it has a little seal around the valve area, was actually hanging the unit open
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  #4  
Old 12-30-2008, 02:05 AM
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Just change the thermostat! 15 mins and the problem will be solved!
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  #5  
Old 12-30-2008, 10:18 AM
david s poole
 
Join Date: Mar 2005
Location: dallas
Posts: 1,822
what you have described is a classic thermostat that never closes.hard to notice in the warm or hot weather but becomes very obvious in the cold.your cars fuel injection is also reacting to the cold engine temp and delivering a richer mixture until warmed up,hence the higher fuel usage.

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European Performance
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"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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