New member, Need Help !!!
Thread Starter
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Joined: May 2003
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From: Jakarta, Indonesia
300 E 24V 1989, E260 W210 V6 1998
New member, Need Help !!!
Need Help about temperature of my 300E'89. Almost 110 Celcius 
if traffic, Is that normal or not ? What I must do ? I already change A/C Condensor and all the ruber pipe. Any suggestion, please ?
if traffic, Is that normal or not ? What I must do ? I already change A/C Condensor and all the ruber pipe. Any suggestion, please ?
Thread Starter
Almost a Member!
Joined: May 2003
Posts: 47
Likes: 0
From: Jakarta, Indonesia
300 E 24V 1989, E260 W210 V6 1998
Thanks, mic280. I already changed all you said to me. But still the temperature up. How about Water Pump ? The car only has single big fan. any suggestion again ?
Thread Starter
Almost a Member!
Joined: May 2003
Posts: 47
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From: Jakarta, Indonesia
300 E 24V 1989, E260 W210 V6 1998
Yes, I running my a/c in traffic. And slowly going up the temperature to 110 celcius. After traffic and got fresh air, so the temperature slow going down to 90 celcius.
Maybe I must change my water pump. Is it make any big point if I change water pump ?
Regards,
Hendro
Maybe I must change my water pump. Is it make any big point if I change water pump ?
Regards,
Hendro
MBWorld Fanatic!
Joined: Aug 2002
Posts: 1,005
Likes: 33
From: Germany
'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
I doubt that the waterpump is the problem. If temperature reduces quickly when the traffics flows again and increases at stop and go traffic the cause of the temp-rise is most probably the fluid coupling driving the main fan. Simple job to replace DIY.
Just open the central allen srew 5 or 6 mm. You need to hold the fan assembly in place to loosen the srew. Insert a 5 mm diameter rod (even better bend it first by 90 degrees 10-15 mm long) in the little slot you find on the circumference of the coupling housing
The test is the following procedure.
Try to push the fan (engine OFF!!!) if it moves itself more than say 90 degrees angle, the coupling needs replacement. The reason is that the fan adjusts the speed through the fluid coupling if the seals are worn the force to tunr the fan reduces to the point that under extreme outside temperatures the radiator is not getting enough air.
Just open the central allen srew 5 or 6 mm. You need to hold the fan assembly in place to loosen the srew. Insert a 5 mm diameter rod (even better bend it first by 90 degrees 10-15 mm long) in the little slot you find on the circumference of the coupling housing
The test is the following procedure.
Try to push the fan (engine OFF!!!) if it moves itself more than say 90 degrees angle, the coupling needs replacement. The reason is that the fan adjusts the speed through the fluid coupling if the seals are worn the force to tunr the fan reduces to the point that under extreme outside temperatures the radiator is not getting enough air.
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MBWorld Fanatic!
Joined: Aug 2002
Posts: 1,005
Likes: 33
From: Germany
'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
The double fans on the outside are to cool the condensor for the A/C they run depending on the pressure/temperature of the air condition circuit. Of corse it has to do with the air temperature approaching the engine radiator, but the main radiator fan on the inside is operating with a fluid coupling which increases speed if temperature rises during stop and go traffic or driving in uphill @ low speed. I'm pretty sure you need to replace the coupling and the temperature stabilizes again between 80 and 90 (95) degrees even under stop and go conditions. DIY means Do-It- Yourself.
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