1975 300D auxillary fan - Mercedes-Benz Forum
 
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post #1 of 4 Old 05-03-2006, 07:28 PM Thread Starter
 
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1975 300D auxillary fan

I been checking my auxillary fan and it is not coming on. IS there any why that I can check it to find the cause. I bought this car out of a estate sale. It had done a lot of sitting. It has 41000 miles on it. I have been treating it easy. Inside is excellent . There is some rust that I am Going To fix. I plan on keeping this MB. Thanks Don L
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post #2 of 4 Old 05-04-2006, 05:28 AM
 
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i believe that fan should only come on when the a/c is turned on. check your fuses and the relays.
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post #3 of 4 Old 05-04-2006, 10:16 AM
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The fan should also turn on when the car's temp runs hot, but it does not typically run all the time.

\'87 Mer-B 300D (220,000 miles) (sold)
\'93 Mer-B 300D (173,000 miles) (sold)
\'87 Porsche 928 (101,000 miles)
\'98 Dodge Ram quad-cab (250,000 miles)
\'2001 CLK430 Cabrio (50,000 miles)

Past cars: 1969 mercedes 250, 1981 300D, 1972 220D
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post #4 of 4 Old 11-20-2006, 07:37 PM
 
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Another Auxillary Fan

My problem is that the heater fan won't come on. There must be some sort of crossover switch that takes control from the a/c fan to the heater fan but I don't know where the interruption is.
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