Engine Temp Rising
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Junior Member
Joined: May 2003
Posts: 31
Likes: 2
From: SFBAY AREA
99E320
Engine Temp Rising
I RECENTLY GOT A 99 E320 AND IT HAS BEEN RUNNING GREAT, BUT NOW THE TEMP GAUGE SHOWS ABOUT 100C WHEN STOP AND GO. AND WHEN I FIRST GOT IT, IT WAS ALWAYS A HAIR BELOW 80C. I KNOW THE WEATHER HAS BEEN ABOUT 10 DEGREES HIGHER THE LAST COUPLE OF DAYS. BUT IS THIS NORMAL. MAYBE A STUCK THERMOSTAT????
THANKS
THANKS
MBWorld Fanatic!
Joined: Aug 2002
Posts: 1,005
Likes: 32
From: Germany
'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
First try is replacing the thermostat, which is pretty cheap and always worth it to be swapped. The next would be check the fluid clutch of the A/C fan in front of the condensor (in front of the engine radiator) The fluid clutch is engaging the fan dependent to the condensor temp. If the clutch filling (silicon oil) is "worn" it does not engage the fan enough to cool the condensor before the air enters the radiator. The check is to push the fan ( engin off!!!) If it turns more than 90 degree the clutch is not tight enough and needs to be replced.
Almost a Member!
Joined: Jan 2002
Posts: 34
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From: Los Angeles
1995 C36 AMG
After driving for a bit, stop the car and feel the main face of the radiator in various spots (top, bottom, corners, etc). Careful, it will be hot! The temperature should be pretty uniform. If you notice obvious cold and warm spots, the the radiator has gone south. You can have it rebuilt if it is the all aluminum type for about 100 bucks, or just replace it for about 250. It is a job you can do yourself.
~dnm
~dnm
