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  #1  
Old 04-19-2001, 12:22 AM
benzlover
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MY 1995 S320'S NORMAL DRIVING TEMP NEDLE.IS READING 110C WHILE AT NORMAL DRIVING CONDITION IS THAT HIGH? IF SO WHAT TEMP SHOULD MY EXTERNAL ELECTRIC FANS HICK ON AT. I AM CURRENTLY USING A SNAP ON SCANNER WITH GENERIC OBD2 READING SOFTWARE. CAN I BUY SOFTWARE FOR MY SCANNER EXCLUSIVELY FOR MY CAR(1995S320)IF SO WHERE AND HOW MUCH DOES IT GENERALLY COST.


THANKS ALOT FOR ALL YOUR HELP
CHRIS
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  #2  
Old 04-19-2001, 12:29 AM
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The temp reading is high. The fans should kick in way before 110-c. Your close to the danger zone of ruining your engine. The first thing to do is replace your thermostat. Then see what kind of results you get. If the fans are kicking in too late then the temp sensor of fan relay is at fault. You should be operating below 90-c on the highway and a little higher in traffic if you have the a/c on.
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  #3  
Old 04-19-2001, 12:54 AM
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Is the fan working?
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Old 04-19-2001, 01:13 AM
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Is 90-100 deg too hot?

My 1984 300SD typically runs between 90 and 100 deg, but often right at 100 deg C. I've seen the needle jump occasionally, and when it does, it drops perhaps 5 degrees. This makes me suspect a slightly intermittent electrical contact somewhere. My coolant level is fine, at least in the overflow reservoir. Should I be concerned? I'm not worried, at least not yet; this car has been very reliable. I just don't want to smoke the head or anything.
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  #5  
Old 04-19-2001, 05:39 PM
glmoy
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80-100C seems like the normal operating range for MBZ.
Water Wetter from Redline will drop your coolant temp.
some if you are really concerned. Many diesel-heads
use it. I have been using it in gas engines for years.

Gary
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  #6  
Old 04-19-2001, 05:51 PM
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According to MB CD the aux fan on 140 should be kicking in
at 100C at low fan speed and spin at high speed when temp. reaches 115C.
Aux fans come on at higher temretures than most people think. On W124 it happens at 107 C
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Old 04-19-2001, 10:15 PM
benzlover
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I HAVE REPLACED MY THERMOSTAT AND THE CAR IS RUNNING AROUND 94C DEGREES AT IDLE AFTER 20 MIN IS THIS THE PROPER IDLE TEMP FOR THE CAR?
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  #8  
Old 04-20-2001, 01:03 AM
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94 degrees is just about normal.

Perfection ought to be 93.26879 to the nearest point ... JUST KIDDING
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