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1998 230 slk
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109 Posts
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Bought my wife a 1998 230 about a week ago. It only has 63,000 miles on it and was garage kept. I had a ind. Mercedes shop do a trans. service, diff. service, p/s service, change the trans. mount and do a coolant flush.($550.) Today I changed the air filter, cabin, changed oil, fuel filter and the spark plugs. Thanks for the sticky's. Took it out today, 20 minutes around town and 20 minutes on the tollway (70-80mph). The temp. gauage stayed the same at around 80-85 degrees. Is this normal?...The outside temp. today here in Austin Tx. is 97 degrees. Thanks again, this site ROCKS!!!!!!
 

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Two 1998 SLK230s, 2003 SLK230 SE, 2002 ML320
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920 Posts
Temp gauge should be 80-85 degrees centigrade. I don't know whether USA cars' temp gauges are in degress F or C. If C, that is normal.
 

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2001 SLK320, 2001 C320
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2,267 Posts
It's 80-85 degrees Celsius. It's a metric gauge. And it's perfectly normal and perfectly correct.
 

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2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
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14,926 Posts
Normal temperature range is between 80 and 100 degrees C, as long as your moving with the A/C off the temp should stay in the lower end of the range.
In heavy traffic you will see the temp climb to the upper range and maybe SLIGHTLY over 100 C before the fan kicks in. If you have the A/C on the temp should not go over 100 C as the fan is already runnuing.... :)
 

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98 SLK 230K
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49 Posts
My gauge seems to read 80 as soon as I switch the engine on from cold and only moves a couple of degrees whilst driving. Shouldn't the needle be at the bottom of the gauge when the engines cold? Faulty temperature sensor?
 

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Registered
2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
Joined
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14,926 Posts
My gauge seems to read 80 as soon as I switch the engine on from cold and only moves a couple of degrees whilst driving. Shouldn't the needle be at the bottom of the gauge when the engines cold? Faulty temperature sensor?
It would appear that there is a problem, the gauge as you thought starts from zero and works it's way up to "normal" whatever that might be for the conditions.
Most likely at fault is the sending unit.
 
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