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#16
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Replace the radiator resivoir cap!
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N. Hodges 1994 S350 1987 300 SDL (for sale) |
#17
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Drove the car today. It went to 115 degrees till I got air cond. shut off, both aux fans running, and heater turned on. That dropped temp back to 95, got car back to house and put away.
I ordered a Behr radiator when I got home. Be in next week, will see what that does for me. Don
__________________
1991 350SD 265,000 miles 1981 300D 320,000 miles 1990 350SDL 144,000 miles (wrecked) 1991 350SD 225,000 miles (sold) 1985 300D 113,000 (sold) 1987 300SDL 183,000 (sold) 1984 300D 360,000 (sold) |
#18
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Yeah, that's too hot. There is something wrong somewhere.
__________________
1995 S-350 370K + SOLD 1952 220B Cabriolet 39K kilometers + SOLD 1998 E300D 310K + 2012 E350 BlueTec 120K |
#19
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Quote:
http://www.w124performance.com/docs/mb/OM60X/OM603_high_temps.pdf http://www.w124performance.com/docs/mb/OM60X/citric_acid_flush.pdf EDIT: Updated link to PDF files. Last edited by gsxr; 08-21-2006 at 02:52 PM. |
#20
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Identical issue - same temps, etc!!! How did it work out, Don???
I'll bring this thread back to life...
I'm having the same issues with temps in my '91 350SD. It USUALLY stays pretty reasonable - around 100C or less, particularly on the freeway - but in stop-&-go traffic I have seen the gauge up to 115C. I just had my radiator flushed and refilled (they used the green stuff after I specifically asked for Zerex G-05!! DAMN!!) but it still went up. I have been advised that anything over 110C is too hot for the aluminum head, so I will have it checked with my mech this week. Anybody else have advice? I know the manual says anything below 120C and below the red line is acceptable, but I would rather be safe than sorry! Don - how did this work out for you??? Did you replace your radiator? Did it make a significant difference? Thanks! Rusty |
#21
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Quote:
__________________
85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International |
#22
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I just recently purchased a 1991 350 SDL and was anticipating overheating problems because of previously owning a 350 SD, I got the SD squared away with new everything. Because of the SDL approaching the 120 mark in town traffic I first addressed the AC aux fans now I have just replaced beginning with the heat sending unit first, thermostat second and finally, radiator, water pump, fan clutch, new G-05 coolant. Took it for a test run in 100 degree temp yesterday and she never got to 100 degrees. The problem I did have was the expansion tank light showing low, the coolant is actually fluctuating in the tank, it goes down with on road driving and comes up when driving slower speeds or when parked. I have researched the forum and read about this problem and are assuming that there must be a void in the system that hasn't gotten the air out. There were several methods discussed for dealing with this, I would appreciate anyones advice on how to stabalize my system so the expansion light won't keep coming on.
Thanks in advance, Frank |
#23
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Quote:
__________________
85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International |
#24
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Quote:
I have yet to test to see if what I did has any benefit. Thanks for the advice, Frank |
#25
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Here's updated link to the factory service info on high engine temps (>110°C) and also the acid flush info:
http://www.w124performance.com/docs/mb/OM60X/OM603_high_temps.pdf http://www.w124performance.com/docs/mb/OM60X/citric_acid_flush.pdf |
#26
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Quote:
After that, it takes several days of cold starts to get most of the air to the expansion tank. Just fill it to the mark each morining. After several days, it should remain at the mark. |
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