Quote:
Originally Posted by Ivanerrol
Check your fan resistor. The connectors often get corroded - break off or wont condcut the fan current through the corrosion.
Fan resistor is underneath the ABS module. Caveat this is for the later M103 update version.
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You can just bypass the resistor.
Quote:
Originally Posted by tbomachines
Slightly off-topic, but does anyone else feel that 105 is a bit too high for the aux fans to come on? My 300SD plants itself at 80 degrees and does not move a millimeter when in traffic, hot, cold, etc. When I got my 300E I was extremely concerned when it hit 100* in traffic and then went down to 60* on the highway. I have never seen a cars temp fluctuate so wildly. I take it 105* is "fine" then and will not hurt the engine? I get nervous when it hits the 100 mark.
Edit: yes, I do realize that diesels create less heat than gas engines, but in comparison to other gas cars, the temp gauge is wild.
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Yes I agree. 105c is too hot. I'm eliminating the clutch fan on my 2.6 and triggering the aux fans at 90c with a 700 ohm parallel resistor in the coolant sensor plug. But it sounds like your thermostat has failed because the temperature shouldn't drop to 60c. I would replace it with a 79c thermostat.